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14:4314:43, 23 August 2022 diff hist +476‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally re-started building my own copy
14:3314:33, 23 August 2022 diff hist +166‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 22, 2022 Tests reveal joystick logic not working
14:3014:30, 23 August 2022 diff hist +48‎ N File:ZX81+38 rev 1.9 component placement.png ‎ added RN3 resistor network 5 x 10K
13:5413:54, 23 August 2022 diff hist +38‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 22, 2022 Tests reveal joystick logic not working
13:5113:51, 23 August 2022 diff hist 0‎ File:ZX81plus38rev1,9.png ‎ Mahjongg uploaded a new version of File:ZX81plus38rev1,9.png
13:4413:44, 23 August 2022 diff hist +100‎ N File:ZX81plus38rev1,9.png ‎ picture version (.PNG medium quality) of revision 1.9 with improved joystick circuitry
13:3113:31, 23 August 2022 diff hist +80‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 22, 2022 Tests reveal joystick logic not working
13:3013:30, 23 August 2022 diff hist +115‎ N File:ZX81plus38rev1,9.pdf ‎ revision 1.9 has revised joystick circuitry, with R23 = 1K and 10K pulldowns on bases of transistors.

16:0316:03, 22 August 2022 diff hist −103‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 22, 2022 Tests reveal joystick logic not working
15:5915:59, 22 August 2022 diff hist +70‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 22, 2022 Tests reveal joystick logic not working
15:5115:51, 22 August 2022 diff hist +1,686‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 10, 2022 its working, but have yet to connect the keyboard

23:5323:53, 9 August 2022 diff hist +289‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 10, 2022 its working, but have yet to connect the keyboard
23:4123:41, 9 August 2022 diff hist +629‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎August 3, 2022 bad luck, I'm missing one HC IC

18:1318:13, 26 July 2022 diff hist +123‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 26, 2022 Updated all revision 1.8 files on GitHub
14:0014:00, 26 July 2022 diff hist +143‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 26, 2022 Updated all revision 1.8 files on GitHub
13:5613:56, 26 July 2022 diff hist +358‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 23 2022 JP1 has become unchangeable in rev 1.7

20:2020:20, 24 July 2022 diff hist +3,593‎ User:Mahjongg ‎No edit summary current

20:1420:14, 23 July 2022 diff hist +412‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 19, That wasn't it

14:3714:37, 21 July 2022 diff hist +20‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎July 10, 2022 updated rev 1.7 schematic, Gerber/drill and placement drawing
14:3614:36, 21 July 2022 diff hist +1,019‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 15, I have an idea why the first test didn't work

15:3215:32, 10 July 2022 diff hist +74‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 10, 2022 updated rev 1.7 schematic, Gerber/drill and placement drawing
15:3015:30, 10 July 2022 diff hist 0‎ N File:ZX81+38 rev 1.8component placement.png ‎No edit summary current
15:2715:27, 10 July 2022 diff hist +53‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 10, 2022 updated rev 1.7 schematic, Gerber/drill and placement drawing
15:2515:25, 10 July 2022 diff hist 0‎ File:ZX81plus38Rev1,8.png ‎ Mahjongg uploaded a new version of File:ZX81plus38Rev1,8.png current
15:1915:19, 10 July 2022 diff hist 0‎ N File:ZX81plus38Rev1,8.png ‎No edit summary
15:1815:18, 10 July 2022 diff hist +150‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎July 6, 2022 I made an observation while building up my copy of the ZX81+38 that shook me
15:1415:14, 10 July 2022 diff hist +82‎ N File:ZX81plus38Rev1,8.pdf ‎ changed all logic to HC, add clock inverter using unused half of U18 current

00:4800:48, 29 June 2022 diff hist 0‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎June 29, 2022 The crystal oscillator is working!

23:2923:29, 28 June 2022 diff hist +174‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎June 29, 2022 The crystal oscillator is working!
23:2723:27, 28 June 2022 diff hist +14‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
23:2623:26, 28 June 2022 diff hist +63‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
23:0923:09, 28 June 2022 diff hist 0‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
23:0823:08, 28 June 2022 diff hist +47‎ N File:P1030120.JPG ‎ Better picture plus using PCBites current
22:5922:59, 28 June 2022 diff hist 0‎ File:P1030119.JPG ‎ Mahjongg uploaded a new version of File:P1030119.JPG current
22:5822:58, 28 June 2022 diff hist −48‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
22:5722:57, 28 June 2022 diff hist +66‎ N File:P1030119.JPG ‎ A picture showing measuring the 13MHz crystal signal
22:5422:54, 28 June 2022 diff hist +7‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
22:5222:52, 28 June 2022 diff hist −2‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎The crystal oscillator is working!
22:5222:52, 28 June 2022 diff hist +108‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎It happened I uploaded all ZX81+38 revision 1.7 files to GitHub

17:0617:06, 23 June 2022 diff hist +638‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7

21:3521:35, 22 June 2022 diff hist 0‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
21:3021:30, 22 June 2022 diff hist +78‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
21:2921:29, 22 June 2022 diff hist +74‎ N File:ZX81+38 rev 1.7 component placement.png ‎ Updated version with U21 = 74HC04 ,rotated J3 and R21 = 330R current
20:2720:27, 22 June 2022 diff hist +41‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
20:2620:26, 22 June 2022 diff hist 0‎ N File:ZX81plus38 Rev 1,7-resized.png ‎No edit summary current
20:0320:03, 22 June 2022 diff hist +1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
19:3519:35, 22 June 2022 diff hist +36‎ N File:ZX81plus38 Rev 1,7-1.png ‎ rev 1.7 as PNG picture current
19:2919:29, 22 June 2022 diff hist +59‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
19:2719:27, 22 June 2022 diff hist +94‎ N File:ZX81plus38 Rev 1,7.pdf ‎ schematic revision 1.7 with various updates, see bottom right block of schematic current
19:2519:25, 22 June 2022 diff hist +2,237‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 7 2022, still have crystal oscilator problems for my own copy

15:2815:28, 8 June 2022 diff hist −1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎May 24, 2020 slowly making progress
15:2715:27, 8 June 2022 diff hist +568‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 1 2022, crystal oscilator is working!

18:5518:55, 1 June 2022 diff hist +74‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 1 2022, crystal oscilator is working!
18:5318:53, 1 June 2022 diff hist +1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 1 2022, crystal oscilator is working!
18:5218:52, 1 June 2022 diff hist +458‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 1 2022, crystal oscilator is working!
17:2417:24, 1 June 2022 diff hist +222‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎juni 1 2022, crystal oscilator is working!
17:2017:20, 1 June 2022 diff hist +766‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎junu 1 2022, crystal oscilator is working!
17:0917:09, 1 June 2022 diff hist +6‎ m ZX81plus38 simple to build ZX-81 clone ‎No edit summary
13:1013:10, 1 June 2022 diff hist +96‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 24, 2020 slowly making progress

13:3513:35, 4 May 2022 diff hist +2‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 17, 2022 I Produced a component placement diagram for rev 1.6
13:3513:35, 4 May 2022 diff hist +3‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
13:3413:34, 4 May 2022 diff hist +8‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
13:3313:33, 4 May 2022 diff hist +296‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
13:2913:29, 4 May 2022 diff hist +986‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
13:1813:18, 4 May 2022 diff hist +442‎ N File:Rom pinouts for ZX81+38 resized.png ‎ drawing explaining three kinds of ROM's that can be fit into the ZX81+38 ROM socket, the three options are: Original ZX-81 ROM a 27C256 OTP (default choice) a 28C256 if you expect you will need to change to contents of the ROM regularly reference the... current

19:4819:48, 3 May 2022 diff hist −1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
19:4719:47, 3 May 2022 diff hist +310‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎May 3, 2022 After more than two year of covid related delay I finally built my own copy
19:3319:33, 3 May 2022 diff hist +36‎ N File:Opgebouwd.JPG ‎ Zonder geplaatste IC's current
19:2719:27, 3 May 2022 diff hist +340‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 17, 2022 I Produced a component placement diagram for rev 1.6

21:5421:54, 17 April 2022 diff hist +2‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎April 17, 2022 Produced component placement diagram for rev 1.6
21:5121:51, 17 April 2022 diff hist +58‎ N File:ZX81+38 rev .6 component placement.png ‎ Mahjongg moved page File:ZX81+38 rev .6 component placement.png to File:ZX81+38 rev 1.6 component placement.png: renaming to rev 1.6 instead of .6 current Tag: New redirect
21:5121:51, 17 April 2022 diff hist 0‎ m File:ZX81+38 rev 1.6 component placement.png ‎ Mahjongg moved page File:ZX81+38 rev .6 component placement.png to File:ZX81+38 rev 1.6 component placement.png: renaming to rev 1.6 instead of .6 current
21:4921:49, 17 April 2022 diff hist +743‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 17, 2022 Produced component placement diagram for rev 1.6
21:4121:41, 17 April 2022 diff hist +71‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
21:3621:36, 17 April 2022 diff hist +61‎ N File:ZX81+38 rev 1.6 component placement.png ‎ component placement drawing for ZX81+38 rev 1.6

16:5616:56, 12 April 2022 diff hist 0‎ Mahjongg ‎ arrrgh
16:5516:55, 12 April 2022 diff hist +1‎ Mahjongg ‎No edit summary
16:5416:54, 12 April 2022 diff hist +73‎ N ZONX81plus4 PSG Board with sd-card interface for the ZX-81 ‎ Mahjongg moved page ZONX81plus4 PSG Board with sd-card interface for the ZX-81 to ZONX81plus41 PSG Board with sd-card interface for the ZX-81: plus 41 not plus 4 current Tag: New redirect
16:5416:54, 12 April 2022 diff hist 0‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ Mahjongg moved page ZONX81plus4 PSG Board with sd-card interface for the ZX-81 to ZONX81plus41 PSG Board with sd-card interface for the ZX-81: plus 41 not plus 4
16:5316:53, 12 April 2022 diff hist +8‎ Mahjongg ‎No edit summary
16:5116:51, 12 April 2022 diff hist +72‎ N ZONX81plus4 PSG Board with sd-card interface ‎ Mahjongg moved page ZONX81plus4 PSG Board with sd-card interface to ZONX81plus4 PSG Board with sd-card interface for the ZX-81: explained it is for a real ZX-81 (or my zx81+38 clone) current Tag: New redirect
16:5116:51, 12 April 2022 diff hist 0‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ Mahjongg moved page ZONX81plus4 PSG Board with sd-card interface to ZONX81plus4 PSG Board with sd-card interface for the ZX-81: explained it is for a real ZX-81 (or my zx81+38 clone)
16:4716:47, 12 April 2022 diff hist −45‎ Mahjongg ‎No edit summary
16:4416:44, 12 April 2022 diff hist −58‎ S ‎ Blanked the page current Tag: Blanking
16:4316:43, 12 April 2022 diff hist +58‎ N S ‎ Mahjongg moved page S to ZONX81plus4 PSG Board with sd-card interface: renaming of product Tag: New redirect
16:4316:43, 12 April 2022 diff hist 0‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ Mahjongg moved page S to ZONX81plus4 PSG Board with sd-card interface: renaming of product
16:4116:41, 12 April 2022 diff hist +25‎ N Zon ZX-81 compatible PSG + 32K RAM and SD-Card interface expansion for ZX-81 and clones ‎ Mahjongg moved page Zon ZX-81 compatible PSG + 32K RAM and SD-Card interface expansion for ZX-81 and clones to ZONX81plus4 current Tag: New redirect
16:4116:41, 12 April 2022 diff hist 0‎ m ZONX81plus4 ‎ Mahjongg moved page Zon ZX-81 compatible PSG + 32K RAM and SD-Card interface expansion for ZX-81 and clones to ZONX81plus4 current
16:4116:41, 12 April 2022 diff hist +15‎ N ZONX81plus4 ‎ Mahjongg moved page Zon ZX-81 compatible PSG + 32K RAM and SD-Card interface expansion for ZX-81 and clones to S Tag: New redirect
16:4116:41, 12 April 2022 diff hist 0‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ Mahjongg moved page Zon ZX-81 compatible PSG + 32K RAM and SD-Card interface expansion for ZX-81 and clones to S
16:3916:39, 12 April 2022 diff hist −5‎ Mahjongg ‎No edit summary
16:3816:38, 12 April 2022 diff hist +1‎ Mahjongg ‎No edit summary
16:3616:36, 12 April 2022 diff hist +2‎ Mahjongg ‎No edit summary
16:3416:34, 12 April 2022 diff hist +1,662‎ Mahjongg ‎No edit summary
16:0416:04, 12 April 2022 diff hist −3‎ m Repair PET2001 AKA CMB 3032 ‎No edit summary current
16:0416:04, 12 April 2022 diff hist +1‎ Repair PET2001 AKA CMB 3032 ‎ status = completed

18:5318:53, 5 April 2022 diff hist +82‎ ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
18:2218:22, 5 April 2022 diff hist −2‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎No edit summary current
18:1818:18, 5 April 2022 diff hist 0‎ m ZX81PLUS35 ZX81 clone ‎No edit summary current
18:1818:18, 5 April 2022 diff hist −3‎ ZX81PLUS35 ZX81 clone ‎No edit summary
18:1418:14, 5 April 2022 diff hist +7‎ m Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components current
18:1318:13, 5 April 2022 diff hist +1‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
18:1118:11, 5 April 2022 diff hist −4‎ Galaksija ‎No edit summary
18:0818:08, 5 April 2022 diff hist +414‎ ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ →‎April 5, 20222 Decided on a name for this product
17:1817:18, 5 April 2022 diff hist +224‎ ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
13:3413:34, 5 April 2022 diff hist +241‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
13:2613:26, 5 April 2022 diff hist +695‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
13:1413:14, 5 April 2022 diff hist 0‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
13:1313:13, 5 April 2022 diff hist +1‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎No edit summary
12:5412:54, 5 April 2022 diff hist +98‎ N Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 ‎ Mahjongg moved page Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 to Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card: Managed to get the SD-card interface working, and with menu driven firm... current Tag: New redirect
12:5412:54, 5 April 2022 diff hist 0‎ m Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ Mahjongg moved page Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 to Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card: Managed to get the SD-card interface working, and with menu driven firm...
12:5312:53, 5 April 2022 diff hist +27‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎No edit summary

19:3019:30, 30 March 2022 diff hist +122‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎Wednesday March 30 2022 BOM ready
19:2719:27, 30 March 2022 diff hist 0‎ N File:PSG sound expansion BOM.pdf ‎No edit summary current
19:2619:26, 30 March 2022 diff hist −17‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎Monday March 28 2022 Layout ready of rev 2.2

01:2301:23, 29 March 2022 diff hist +57‎ m Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎Monday March 28 2022 Layout ready of rev 2.2

18:3118:31, 28 March 2022 diff hist +107‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎Monday March 28 2022 Layout ready of rev 2.2
18:2918:29, 28 March 2022 diff hist +40‎ N File:Layout sound expansion rev2.2 component overview.png ‎ updated component overview current
17:3217:32, 28 March 2022 diff hist +205‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
17:2917:29, 28 March 2022 diff hist +16‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎No edit summary
17:2817:28, 28 March 2022 diff hist 0‎ N File:ZON compatiible PSG with SD-Card interface rev 2.2.PNG ‎No edit summary current
05:5905:59, 28 March 2022 diff hist +50‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
05:5705:57, 28 March 2022 diff hist +11‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
05:5605:56, 28 March 2022 diff hist +426‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
05:4705:47, 28 March 2022 diff hist +487‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
05:3905:39, 28 March 2022 diff hist +33‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
05:3705:37, 28 March 2022 diff hist +28‎ N File:PSG with sd-card interface for ZX81plus35 REV 2.2.png ‎ as png picture current

03:0203:02, 23 March 2022 diff hist +88‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 23, 2022 added Thomas patches to rev2.1 created revision 2.2
03:0003:00, 23 March 2022 diff hist +575‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 16, 2022 have the details from Thomas
02:5002:50, 23 March 2022 diff hist +121‎ N File:PSG with sd-card interface for ZX81plus35 REV 2.2.pdf ‎ New version with corrected 74HCT02 but also with the changes to the SD-CARD interface that makes it working current

23:0123:01, 21 March 2022 diff hist +48‎ m ZX81PLUS35 ZX81 clone ‎ bridge too far
22:5822:58, 21 March 2022 diff hist +26‎ ZX81PLUS35 ZX81 clone ‎ →‎May 21, 2022 revision 4.2 supports 16K ROM space
22:5622:56, 21 March 2022 diff hist +1‎ m ZX81PLUS35 ZX81 clone ‎ →‎May 17, 2022 revision 4.2 supports 16K ROM space
17:3917:39, 21 March 2022 diff hist +4‎ ZX81PLUS35 ZX81 clone ‎ →‎May 17, 2022 revision 4.2 supports 16K ROM space
17:3817:38, 21 March 2022 diff hist +98‎ ZX81PLUS35 ZX81 clone ‎ →‎May 17, 2022 revision 4.2 supports 16K ROM space
17:3617:36, 21 March 2022 diff hist +70‎ ZX81PLUS35 ZX81 clone ‎ →‎May 17, 2022 revision 4.2 supports 16K ROM space
17:3417:34, 21 March 2022 diff hist +37‎ ZX81PLUS35 ZX81 clone ‎ →‎May 17, 2022 revision 4.2 supports 16K ROM space
17:3217:32, 21 March 2022 diff hist +66‎ N File:ZX81+35 REV 4.2 layout preview.PDF ‎ Top layer plus silk screen preview of ZX81+35 Rev4.2 current
17:3017:30, 21 March 2022 diff hist +1,279‎ ZX81PLUS35 ZX81 clone ‎ →‎May 16, 2022 Yes after the two year long corona crisis has happened I'm back
17:0717:07, 21 March 2022 diff hist +215‎ N File:ZX81+35 REV 4.2. schematic color.pdf ‎ Version suitable for PSG with SD-Card interface, with 16K ROM support (default) and with A13 & A14 corrected, swapped, on expansion port, also now with 0 (CPU) clock instead of 3.5MHz on expansion port current

23:1823:18, 16 March 2022 diff hist +187‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 16, 2022 have the details from Thomas
23:0923:09, 16 March 2022 diff hist +254‎ ZX81PLUS35 ZX81 clone ‎ →‎May 16, 2022 Yes after the two year long corona crisis has happened I'm back
23:0623:06, 16 March 2022 diff hist +138‎ ZX81PLUS35 ZX81 clone ‎ →‎May 16, 2022 Yes after the corona crisis has happened I'm back
23:0123:01, 16 March 2022 diff hist +314‎ ZX81PLUS35 ZX81 clone ‎ →‎May 16, 2022 Yes after the corona crisis has happened I'm back
22:5422:54, 16 March 2022 diff hist +1,289‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
22:3822:38, 16 March 2022 diff hist +272‎ ZX81PLUS35 ZX81 clone ‎ →‎I'm considering designing a simplified (to build) version, based on an ULA replicate
22:2822:28, 16 March 2022 diff hist +40‎ N Talk:ZX81PLUS34 ZX81 clone ‎ Mahjongg moved page Talk:ZX81PLUS34 ZX81 clone to Talk:ZX81PLUS35 ZX81 clone: update to plus35 (year later version) current Tag: New redirect
22:2822:28, 16 March 2022 diff hist 0‎ m Talk:ZX81PLUS35 ZX81 clone ‎ Mahjongg moved page Talk:ZX81PLUS34 ZX81 clone to Talk:ZX81PLUS35 ZX81 clone: update to plus35 (year later version) current
22:2822:28, 16 March 2022 diff hist +35‎ N ZX81PLUS34 ZX81 clone ‎ Mahjongg moved page ZX81PLUS34 ZX81 clone to ZX81PLUS35 ZX81 clone: update to plus35 (year later version) current Tag: New redirect
22:2822:28, 16 March 2022 diff hist 0‎ m ZX81PLUS35 ZX81 clone ‎ Mahjongg moved page ZX81PLUS34 ZX81 clone to ZX81PLUS35 ZX81 clone: update to plus35 (year later version)
22:1422:14, 16 March 2022 diff hist +1‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 16, 2022 have the details from Thomas
17:3317:33, 16 March 2022 diff hist +76‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎March 16, 2022 have the details from Thomas
17:3217:32, 16 March 2022 diff hist +1,340‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working

20:5220:52, 15 March 2022 diff hist +13‎ ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
20:4920:49, 15 March 2022 diff hist 0‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
20:4920:49, 15 March 2022 diff hist +5‎ m ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
20:4820:48, 15 March 2022 diff hist +200‎ ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎No edit summary
20:4520:45, 15 March 2022 diff hist +770‎ N ZONX81plus41 PSG Board with sd-card interface for the ZX-81 now with rev 1.2 firmware on GitHub ‎ started with ZX-81 PSG expansion board
18:3218:32, 15 March 2022 diff hist +351‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
18:1018:10, 15 March 2022 diff hist +422‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
18:0218:02, 15 March 2022 diff hist +21‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
18:0118:01, 15 March 2022 diff hist +351‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
17:5617:56, 15 March 2022 diff hist +6‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
17:5517:55, 15 March 2022 diff hist +218‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
17:5217:52, 15 March 2022 diff hist +12‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎15 march 2022, great news a PSG board builder has gotten the SD-card interface working
17:5117:51, 15 March 2022 diff hist +501‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎29 October 2019, PSG board rev 2.1 component overview
17:4317:43, 15 March 2022 diff hist +154‎ N File:The hardware thomas used, not the various patches on the PSG board.jpg ‎ Thomas worked on my PSG board for the ZX-81+35 and used some patches, and his firmware in (expanded) ROM to get a SD-card interface working. current
17:4117:41, 15 March 2022 diff hist +115‎ N File:The OS menu, showing files you can download using the SD-card interface.jpeg ‎ A list of files (.ROM files) you can choose using the firmware with thomas sd-card interface software current
17:3817:38, 15 March 2022 diff hist +65‎ N File:Game loaded on zx-81+35 using the sd-card interface.jpeg ‎ thomas used his PSG clone board to load a game file current
01:3801:38, 15 March 2022 diff hist +77‎ Mahjongg ‎No edit summary

02:5002:50, 9 March 2022 diff hist +39‎ Galaksija ‎ →‎Resume working on it in February 2022
02:4502:45, 9 March 2022 diff hist +195‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
02:4202:42, 9 March 2022 diff hist +80‎ N File:PanGalaksija component placing rev1.0 Preliminary.png ‎ picture of preliminary component placement of PanGalaksija rev 1.0 current
02:3602:36, 9 March 2022 diff hist +250‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
02:3202:32, 9 March 2022 diff hist +61‎ N File:PanGalaksija-component placement rev 1.0.pdf ‎ component placement (quiet picture, so no pads) current
02:1802:18, 9 March 2022 diff hist +2‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
02:1802:18, 9 March 2022 diff hist +102‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
02:1702:17, 9 March 2022 diff hist +71‎ N File:PanGalaksija schematic Keys rev1.0.png ‎ This is the keyboard section of PanGalaksija revision 1.0 current
02:1502:15, 9 March 2022 diff hist +112‎ Galaksija ‎ →‎March 9, schematic revision 1.0 finished, plus placement of components
02:1302:13, 9 March 2022 diff hist +105‎ N File:PanGalaksija schematic main rev1.0.png ‎ first full schematic of PanGalaksija main-section revision 1.0. picture version of the .PDF current
02:0902:09, 9 March 2022 diff hist +419‎ Galaksija ‎ →‎February 28, slowly filling in parts in the schematic
02:0402:04, 9 March 2022 diff hist +40‎ File:PanGalaksija schematic rev1.0.pdf ‎ →‎Summary current
02:0302:03, 9 March 2022 diff hist +50‎ N File:PanGalaksija schematic rev1.0.pdf ‎ first full schematic main & keyboard

02:3802:38, 28 February 2022 diff hist +1,431‎ Galaksija ‎ →‎February 17, laid out the keyboard section
02:2402:24, 28 February 2022 diff hist +139‎ m Galaksija ‎ →‎February 17, laid out the keyboard section

12:1112:11, 19 February 2022 diff hist +172‎ Mahjongg ‎ started with my pangalksija

14:2914:29, 17 February 2022 diff hist +63‎ Galaksija ‎ →‎February 17, laid out the keyboard section
14:2814:28, 17 February 2022 diff hist +94‎ Galaksija ‎ →‎February 16, drawn keyboard schematic and designed placement of keys
14:2514:25, 17 February 2022 diff hist 0‎ N File:Keyboard PanGalaksija preview.png ‎No edit summary current
14:2414:24, 17 February 2022 diff hist −90‎ Galaksija ‎ →‎February 16, drawn keyboard schematic and designed placement of keys

02:0502:05, 16 February 2022 diff hist +55‎ Galaksija ‎ →‎February 16, drawn keyboard schematic and designed placement of keys
02:0402:04, 16 February 2022 diff hist +52‎ Galaksija ‎ →‎February 16, drawn keyboard schematic and designed placement of keys
02:0002:00, 16 February 2022 diff hist +70‎ Galaksija ‎ →‎February 16, drawn keyboard schematic and designed placement of keys
01:5801:58, 16 February 2022 diff hist 0‎ N File:PanGalaksija 3D keyboard preview.png ‎No edit summary current
01:5801:58, 16 February 2022 diff hist +1,011‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
01:4101:41, 16 February 2022 diff hist 0‎ N File:PanGalaksija keyboard schematic preview.pdf ‎No edit summary current

17:0917:09, 14 February 2022 diff hist +1‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
17:0817:08, 14 February 2022 diff hist −3‎ m Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
17:0717:07, 14 February 2022 diff hist +7‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
17:0717:07, 14 February 2022 diff hist +79‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
17:0617:06, 14 February 2022 diff hist 0‎ N File:Desktop computer GALAKSIJA, 1983.jpg ‎No edit summary current
17:0417:04, 14 February 2022 diff hist +4‎ Galaksija ‎No edit summary
14:3514:35, 14 February 2022 diff hist −7‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
14:3414:34, 14 February 2022 diff hist +7‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
14:3214:32, 14 February 2022 diff hist +3‎ Galaksija ‎ →‎February 14, Galaksija Keyboard schematic
14:3114:31, 14 February 2022 diff hist 0‎ N File:Galakija Keyboard schematic.png ‎No edit summary current
14:3014:30, 14 February 2022 diff hist +153‎ Galaksija ‎ →‎February 11, 2022 Installed KCad 6 on PC at home

19:2519:25, 9 February 2022 diff hist +20‎ Galaksija ‎ →‎Resume working on it in February 2022
19:2419:24, 9 February 2022 diff hist +388‎ Galaksija ‎ →‎Resume working on it in February 2022
19:1319:13, 9 February 2022 diff hist +1,592‎ Galaksija ‎ →‎September 2016
15:2915:29, 9 February 2022 diff hist +183‎ Mahjongg ‎ Github link

19:4419:44, 8 February 2022 diff hist +174‎ Repair PET2001 AKA CMB 3032 ‎ →‎End of 2019, took the PET and floppy drives home
19:4219:42, 8 February 2022 diff hist +248‎ Repair PET2001 AKA CMB 3032 ‎ →‎Tuesday January 2, 2018 we have let the magic smoke out from the floppy unit
19:3419:34, 8 February 2022 diff hist +1‎ Mahjongg ‎No edit summary
19:3319:33, 8 February 2022 diff hist +787‎ Mahjongg ‎ last project the NES emulator in a joypad.
19:2519:25, 8 February 2022 diff hist +236‎ Mahjongg ‎No edit summary
19:2119:21, 8 February 2022 diff hist +120‎ Mahjongg ‎No edit summary
19:1719:17, 8 February 2022 diff hist +206‎ Mahjongg ‎ separate items
19:1319:13, 8 February 2022 diff hist +1‎ m Mahjongg ‎No edit summary
19:1319:13, 8 February 2022 diff hist +357‎ Mahjongg ‎No edit summary
19:0819:08, 8 February 2022 diff hist +69‎ Mahjongg ‎No edit summary
19:0719:07, 8 February 2022 diff hist +185‎ Mahjongg ‎ zon PSG board for zx81+34
19:0419:04, 8 February 2022 diff hist +29‎ m Mahjongg ‎No edit summary
19:0219:02, 8 February 2022 diff hist +188‎ Mahjongg ‎No edit summary
18:5818:58, 8 February 2022 diff hist +41‎ Mahjongg ‎No edit summary
18:5718:57, 8 February 2022 diff hist +16‎ Mahjongg ‎No edit summary
18:5518:55, 8 February 2022 diff hist +518‎ Mahjongg ‎No edit summary
18:4618:46, 8 February 2022 diff hist −1‎ Mahjongg ‎No edit summary
18:4518:45, 8 February 2022 diff hist +33‎ Mahjongg ‎No edit summary
18:4318:43, 8 February 2022 diff hist +449‎ Mahjongg ‎No edit summary
18:3518:35, 8 February 2022 diff hist −103‎ Mahjongg ‎No edit summary
18:3418:34, 8 February 2022 diff hist +131‎ Mahjongg ‎No edit summary
18:3118:31, 8 February 2022 diff hist +177‎ Mahjongg ‎No edit summary
18:2818:28, 8 February 2022 diff hist +202‎ Mahjongg ‎No edit summary
18:2618:26, 8 February 2022 diff hist +127‎ Mahjongg ‎No edit summary
18:2518:25, 8 February 2022 diff hist +134‎ Mahjongg ‎No edit summary
18:1818:18, 8 February 2022 diff hist +313‎ Mahjongg ‎No edit summary
18:1318:13, 8 February 2022 diff hist +1,515‎ Mahjongg ‎ adding what projects I have done.

22:1422:14, 7 January 2022 diff hist +23‎ Rhococo prototype hardware debugging ‎No edit summary current

16:0116:01, 21 April 2021 diff hist +120‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
15:5915:59, 21 April 2021 diff hist +78‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
15:5815:58, 21 April 2021 diff hist +679‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
15:4615:46, 21 April 2021 diff hist +8‎ m ZX81plus38 simple to build ZX-81 clone ‎No edit summary

02:3802:38, 26 February 2021 diff hist +106‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home

23:4023:40, 25 November 2020 diff hist +104‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
23:3423:34, 25 November 2020 diff hist −4‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎26 november 2020, I found a suitable soldering iron at home
23:3223:32, 25 November 2020 diff hist +977‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎11 november 2020, I received a rev 1.6 PCB, and parts

17:4717:47, 12 November 2020 diff hist +14‎ m ZX81plus38 simple to build ZX-81 clone ‎No edit summary
17:4517:45, 12 November 2020 diff hist +63‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A few found error makes Revision 1,6 necessary
17:4317:43, 12 November 2020 diff hist 0‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
17:4317:43, 12 November 2020 diff hist +1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
17:4017:40, 12 November 2020 diff hist +615‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
17:3317:33, 12 November 2020 diff hist +5‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary

23:2123:21, 31 October 2020 diff hist +155‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary

12:5812:58, 20 October 2020 diff hist +680‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
12:4612:46, 20 October 2020 diff hist 0‎ File:ZX81plus38rev1,6.pdf ‎ Mahjongg uploaded a new version of File:ZX81plus38rev1,6.pdf current

20:2120:21, 18 October 2020 diff hist +15‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
20:2020:20, 18 October 2020 diff hist +45‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
20:2020:20, 18 October 2020 diff hist +38‎ N File:PCB PrevIew ZX81+38 rev 1,6 bottom.png ‎ bottom side revision 1,6 current
20:1920:19, 18 October 2020 diff hist +112‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
20:1620:16, 18 October 2020 diff hist +70‎ N File:PCB PrevIew ZX81+38 rev 1,6 top.png ‎ version with corrected A8 instead of A8' keyboard matrix current
19:4519:45, 18 October 2020 diff hist +175‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
19:4319:43, 18 October 2020 diff hist +64‎ N File:ZX81plus38rev1,6.pdf ‎ Version with A8 instead of A8' for keyboard matrix
18:5818:58, 18 October 2020 diff hist +1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎A new found error makes Revision 1,6 necessary
18:5618:56, 18 October 2020 diff hist +653‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,5 finished and checked
13:4513:45, 18 October 2020 diff hist +28‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,5 finished and checked
13:4413:44, 18 October 2020 diff hist +76‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,5 finished and checked

16:5316:53, 17 October 2020 diff hist 0‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,8 finished and checked

23:3523:35, 15 October 2020 diff hist +48‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,8 finished and checked
23:3323:33, 15 October 2020 diff hist +34‎ N File:ZX81+38rev1,5 bottom.png ‎ bottom (solder) side current
23:2923:29, 15 October 2020 diff hist +137‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Layout ZX81+38 rev 1,8 finished and checked
23:2723:27, 15 October 2020 diff hist +82‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Revision 1.5 with various corrections should now be working
23:2523:25, 15 October 2020 diff hist −4‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
23:2423:24, 15 October 2020 diff hist −16‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
23:2223:22, 15 October 2020 diff hist +63‎ N File:ZX81+38rev1,5 top.png ‎ Top (component) side revision 1.5 16 october 2020 current

18:3418:34, 9 October 2020 diff hist +2,968‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Revision 1.5 with various corrections is now working
17:3517:35, 9 October 2020 diff hist +34‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Revision 1.5 with various corrections is now working
17:1817:18, 9 October 2020 diff hist +7‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Revision 1.5 with various corrections is now working
17:1717:17, 9 October 2020 diff hist +31‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Revision 1.5 with various corrections is now working
17:1517:15, 9 October 2020 diff hist 0‎ File:ZX81plus38rev1,5.png ‎ Mahjongg uploaded a new version of File:ZX81plus38rev1,5.png current
17:1017:10, 9 October 2020 diff hist +54‎ N File:ZX81plus38rev1,5.png ‎ final working version in black and white
17:0917:09, 9 October 2020 diff hist −595‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Various people are building mij ZX-81plus38, and offer a great help debugging it
16:5916:59, 9 October 2020 diff hist +33‎ N File:ZX81plus38rev1,5.pdf ‎ corrected schematic current

00:3200:32, 6 October 2020 diff hist +112‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Various people are building mij ZX-81plus38, and offer a great help debugging it
00:3000:30, 6 October 2020 diff hist +659‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎I managed to work from home

15:2315:23, 14 September 2020 diff hist +33‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎I managed to work from home
15:1915:19, 14 September 2020 diff hist +71‎ N File:ZX81plus38Rev1,4BW.png ‎ final schematic ZX81+38 (revision 1.4) in black and white current

23:5923:59, 11 September 2020 diff hist +53‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎I managed to work from home
23:5823:58, 11 September 2020 diff hist +29‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎I managed to work from home
23:4523:45, 11 September 2020 diff hist +82‎ N File:ZX81plus38 BOM.ods ‎ The Bill Of materials plus order codes for either Farnell, or Mouser current
23:4323:43, 11 September 2020 diff hist +136‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎I managed to work from home
23:3923:39, 11 September 2020 diff hist +68‎ N File:ZX81plus38Rev1.4BW.pdf ‎ Final schematic of ZX-81+38 rev 1.4 in black and white current
23:3423:34, 11 September 2020 diff hist +536‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Due to the COVID-19 crisis progress has temporarily halted

03:3203:32, 3 September 2020 diff hist +56‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 10, ZX-81plus38 PCB is finished
03:3003:30, 3 September 2020 diff hist +107‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 10, ZX-81plus38 PCB is finished

15:3715:37, 30 August 2020 diff hist +34‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎Due to the COVID-19 crisis progress has temporarily halted
14:2814:28, 30 August 2020 diff hist +35‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 10, ZX-81plus38 PCB is finished
14:1014:10, 30 August 2020 diff hist +3‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎Due to the COVID-19 crisis progress has temporarily halted

17:5517:55, 21 July 2020 diff hist +458‎ Designing the RhoCoCo Retro Home COlor COmputer hardware ‎ →‎I think I found a solution for the generation of an SPI signal for the SD-card reader
17:4917:49, 21 July 2020 diff hist +20‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎Due to the COVID-19 crisis progress has halted
17:4917:49, 21 July 2020 diff hist +1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎Due to the COVID-19 crisis progress has halted
17:4817:48, 21 July 2020 diff hist +370‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎April 10, ZX-81plus38 PCB is finished
17:4317:43, 21 July 2020 diff hist +18‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎September 18, 2019 I started the design
17:4117:41, 21 July 2020 diff hist +1‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
17:3917:39, 21 July 2020 diff hist −6‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
17:3717:37, 21 July 2020 diff hist +40‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
17:3517:35, 21 July 2020 diff hist +4‎ m ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files

14:4914:49, 10 July 2020 diff hist +13‎ ZX81PLUS35 ZX81 clone ‎No edit summary
14:4914:49, 10 July 2020 diff hist +1‎ ZX81PLUS35 ZX81 clone ‎No edit summary
14:4714:47, 10 July 2020 diff hist +47‎ ZX81PLUS35 ZX81 clone ‎No edit summary
14:4614:46, 10 July 2020 diff hist +1‎ m ZX81PLUS35 ZX81 clone ‎No edit summary
14:4514:45, 10 July 2020 diff hist +390‎ ZX81PLUS35 ZX81 clone ‎No edit summary

21:5521:55, 30 June 2020 diff hist +35‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
21:5521:55, 30 June 2020 diff hist +67‎ N File:ZX81+35 REV 4.1 schematic.pdf ‎ The lates schematic, 30 June, 2020 rev 4,1 of ZX81+35 current
21:5321:53, 30 June 2020 diff hist +330‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
21:4721:47, 30 June 2020 diff hist +48‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
21:4521:45, 30 June 2020 diff hist 0‎ N File:New Gerbers Rev 4,1 detail.png ‎No edit summary current
21:4321:43, 30 June 2020 diff hist +40‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about errors in the latest gerber files
21:4121:41, 30 June 2020 diff hist +54‎ N File:New Gerbers Rev 4,1.png ‎ New version 4,1 with correct solder mask current
21:3921:39, 30 June 2020 diff hist +757‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:3021:30, 30 June 2020 diff hist +3‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:3021:30, 30 June 2020 diff hist +118‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:2721:27, 30 June 2020 diff hist +1‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:2621:26, 30 June 2020 diff hist 0‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:2521:25, 30 June 2020 diff hist 0‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:2421:24, 30 June 2020 diff hist +132‎ ZX81PLUS35 ZX81 clone ‎ →‎June 2020 I received news about the latest gerber files
21:2121:21, 30 June 2020 diff hist +52‎ N File:Old gerbers Rev 4,0 detail.png ‎ This detail shows the problems clearly current
21:2021:20, 30 June 2020 diff hist +136‎ N File:Old Gerbers Rev 4,0.png ‎ This is a screen capture from a gerber viewer showing the file I uploaded end of 2019, there are clearly problems with it. current
21:1821:18, 30 June 2020 diff hist +388‎ ZX81PLUS35 ZX81 clone ‎ →‎October 21, 2016 Received a free built ZX81+35 and its working

21:2821:28, 23 April 2020 diff hist +2‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎April 10, ZX-81plus38 PCB is finished

09:0209:02, 16 April 2020 diff hist −4‎ m Galaksija ‎No edit summary

12:4512:45, 10 April 2020 diff hist 0‎ File:Final ZX81plus38 PCB rev 1,4 silk screen top.PNG ‎ Mahjongg uploaded a new version of File:Final ZX81plus38 PCB rev 1,4 silk screen top.PNG current
12:4212:42, 10 April 2020 diff hist +4‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
12:4112:41, 10 April 2020 diff hist −1‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
12:4012:40, 10 April 2020 diff hist 0‎ File:Final ZX81plus38 PCB rev 1,4 bottom view.PNG ‎ Mahjongg uploaded a new version of File:Final ZX81plus38 PCB rev 1,4 bottom view.PNG current
12:3712:37, 10 April 2020 diff hist 0‎ File:Final ZX81plus38 PCB rev 1,4 top view.PNG ‎ Mahjongg uploaded a new version of File:Final ZX81plus38 PCB rev 1,4 top view.PNG current

15:1615:16, 26 March 2020 diff hist +135‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
15:1315:13, 26 March 2020 diff hist +223‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
15:1015:10, 26 March 2020 diff hist +65‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
15:0815:08, 26 March 2020 diff hist 0‎ N File:Final ZX81plus38 PCB rev 1,4 silk screen top.PNG ‎No edit summary
15:0715:07, 26 March 2020 diff hist +51‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
12:4012:40, 26 March 2020 diff hist +79‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 26, ZX-81plus38 is finished
12:3912:39, 26 March 2020 diff hist 0‎ N File:Final ZX81plus38 PCB rev 1,4 bottom view.PNG ‎No edit summary
12:3812:38, 26 March 2020 diff hist +1,150‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 16, RefSpace is closed!
12:2312:23, 26 March 2020 diff hist +6‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
12:2212:22, 26 March 2020 diff hist 0‎ N File:Final ZX81plus38 PCB rev 1,4 top view.PNG ‎No edit summary

13:3013:30, 11 March 2020 diff hist +11‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
10:4310:43, 11 March 2020 diff hist −4‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
10:4110:41, 11 March 2020 diff hist +84‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 11, 2020 Added soldermask, and silkscreen
10:4010:40, 11 March 2020 diff hist 0‎ N File:ZX81plus38 PCB rev 1,4 bottom view.PNG ‎No edit summary current
10:3910:39, 11 March 2020 diff hist −13‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 11, 2020 Added soldermask, and silkscreen
10:3710:37, 11 March 2020 diff hist 0‎ N File:ZX81plus38 PCB rev 1,4 top view.PNG ‎No edit summary current

23:5323:53, 10 March 2020 diff hist +67‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 11, 2020 Added soldermask, and silkscreen
23:5223:52, 10 March 2020 diff hist +16‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 11, 2020 Added soldermask, and silkscreen
23:5123:51, 10 March 2020 diff hist +309‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 4, 2020 layout finished

15:1715:17, 6 March 2020 diff hist +270‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 4, 2020 layout finished

10:2210:22, 4 March 2020 diff hist +181‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 4, 2020 layout finished
10:2010:20, 4 March 2020 diff hist +208‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 4, 2020 layout finished
10:1610:16, 4 March 2020 diff hist +51‎ N File:ZX81plus38 copper bottom.PNG ‎ PCB layout bottom without solder mask current
10:1510:15, 4 March 2020 diff hist +44‎ N File:ZX81plus38 copper top.PNG ‎ Copper top without solder mask current
00:3000:30, 4 March 2020 diff hist +42‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎March 4, 2020 layout finished
00:2800:28, 4 March 2020 diff hist +50‎ N File:ZX81+38 4 maart 2020.png ‎ Final 100% routed, with copper fill. current
00:2500:25, 4 March 2020 diff hist +152‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 26, 2020

10:4610:46, 26 February 2020 diff hist +1‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎January 14, 2020, some progress

23:2523:25, 25 February 2020 diff hist +370‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 19, 2020
23:1523:15, 25 February 2020 diff hist 0‎ N File:Ratsnest ZX81+38 26 Feb 2020.png ‎No edit summary current

23:5823:58, 18 February 2020 diff hist +36‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 19, 2020
23:5323:53, 18 February 2020 diff hist +45‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 19, 2020
23:5223:52, 18 February 2020 diff hist −27‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 12, 2020
23:4823:48, 18 February 2020 diff hist +27‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 12, 2020
23:4523:45, 18 February 2020 diff hist +376‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 12, 2020
23:3623:36, 18 February 2020 diff hist +77‎ N File:Finished layout ZX81+38 19 feb 2020 without copper fill.png ‎ Finshed layout, no copper fill yet. Expansion port for I/O only current

23:2623:26, 11 February 2020 diff hist +7‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 12, 2020
23:2523:25, 11 February 2020 diff hist +368‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎February 12, 2020
23:1723:17, 11 February 2020 diff hist +74‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎January 28, 2020
23:1623:16, 11 February 2020 diff hist +47‎ N File:Ratsnest ZX81+38 12 Feb 2020.png ‎ progression on February 12, 2020. current

23:0423:04, 28 January 2020 diff hist +73‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎January 22, 2020 more progress
23:0323:03, 28 January 2020 diff hist 0‎ N File:Ratsnest ZX81+38 28 jan 2020.png ‎No edit summary current

23:0323:03, 21 January 2020 diff hist +90‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎January 14, 2020, some progress
23:0123:01, 21 January 2020 diff hist 0‎ N File:Ratsnest ZX81plus38 22 jan 2020.png ‎No edit summary current

22:2322:23, 14 January 2020 diff hist +152‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎December 10, 2019, partially routed
22:1922:19, 14 January 2020 diff hist +56‎ N File:Ratsnest ZX81+38 14 jan 2020.png ‎ Mahjongg moved page File:Ratsnest ZX81+38 14 jan 2020.png to File:Ratsnest ZX81 plus 38 14 jan 2020.png current Tag: New redirect
22:1922:19, 14 January 2020 diff hist 0‎ m File:Ratsnest ZX81 plus 38 14 jan 2020.png ‎ Mahjongg moved page File:Ratsnest ZX81+38 14 jan 2020.png to File:Ratsnest ZX81 plus 38 14 jan 2020.png current
22:1722:17, 14 January 2020 diff hist +42‎ N File:Ratsnest ZX81 plus 38 14 jan 2020.png ‎ progress on january 14, 2020

12:2712:27, 13 January 2020 diff hist +42‎ Hoera10jaar ‎ →‎Aanmeldingen

22:5422:54, 10 December 2019 diff hist +5‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎December 10, 2019, partially routed
22:4122:41, 10 December 2019 diff hist +15‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎December 3, 2019, partially routed
22:3922:39, 10 December 2019 diff hist +87‎ N File:ZX81plus38 routing progress 10 december 2019.png ‎ Added card edge fingers, among more stuff this time enabled the rats nest current

22:5022:50, 3 December 2019 diff hist +1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =
22:4922:49, 3 December 2019 diff hist 0‎ N File:ZX81plus38 routing progress 3 December 2019.png ‎No edit summary current
22:4822:48, 3 December 2019 diff hist +3‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎December 3, 2019, partially routed
22:4722:47, 3 December 2019 diff hist +66‎ N File:ZX81+38 routing progress 3 december 2019.png ‎ Mahjongg moved page File:ZX81+38 routing progress 3 december 2019.png to File:ZX81plus38 routing progress 3 december 2019.png: No use of the plus sign current Tag: New redirect
22:4722:47, 3 December 2019 diff hist 0‎ m File:ZX81plus38 routing progress 3 december 2019.png ‎ Mahjongg moved page File:ZX81+38 routing progress 3 december 2019.png to File:ZX81plus38 routing progress 3 december 2019.png: No use of the plus sign current
22:4522:45, 3 December 2019 diff hist +1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎December 3, 2019, partially routed
22:4522:45, 3 December 2019 diff hist +74‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 20, 2019 finished placement, did some power routing
22:4122:41, 3 December 2019 diff hist 0‎ N File:ZX81plus38 routing progress 3 december 2019.png ‎No edit summary

16:1216:12, 20 November 2019 diff hist +4‎ m ZX81plus38 simple to build ZX-81 clone ‎ →‎November 20, 2019 finished placement, did some power routing
16:1116:11, 20 November 2019 diff hist +81‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 20, 2019 finished placement, did some power routing
02:0002:00, 20 November 2019 diff hist +1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimization
01:1701:17, 20 November 2019 diff hist +283‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimization
01:0901:09, 20 November 2019 diff hist +64‎ N File:Placement and ratnest 2019-11-20 02-05-42.png ‎ optimized placement, plus some GND and +5V routing current

17:1417:14, 19 November 2019 diff hist +140‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimization
17:1217:12, 19 November 2019 diff hist +53‎ N File:ZX81plus38rev 1.4 16 colour.png ‎ after optimizing placement 16 color PNG current
17:1017:10, 19 November 2019 diff hist 0‎ File:ZX81plus38rev 1.4.png ‎ Mahjongg uploaded a new version of File:ZX81plus38rev 1.4.png current
16:5816:58, 19 November 2019 diff hist +40‎ N File:ZX81plus38rev 1.4.png ‎ after optimizing placement

00:2200:22, 13 November 2019 diff hist +42‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimization
00:2100:21, 13 November 2019 diff hist +6‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimization
00:2000:20, 13 November 2019 diff hist +95‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimisation
00:1800:18, 13 November 2019 diff hist +31‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 13, 2019 Did a lot of placement optimisation
00:1700:17, 13 November 2019 diff hist +64‎ N File:ZX81plus38rev 1.4.pdf ‎ revision 1.4 after component placing optimization. current
00:1500:15, 13 November 2019 diff hist +95‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 6, 2016 re-shaped the DIP pads to accommodate routing two wires between pads
00:1300:13, 13 November 2019 diff hist −47‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 20, 2016 rev 1.3 supports 16K ROM's

15:1115:11, 11 November 2019 diff hist +1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 20, 2016 rev 1.3 supports 16K ROM's
15:1015:10, 11 November 2019 diff hist −1‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 20, 2016 rev 1.3 supports 16K ROM's
15:0915:09, 11 November 2019 diff hist +47‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 20, 2016 rev 1.3 supports 16K ROM's
15:0915:09, 11 November 2019 diff hist −47‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 15, 2019, finished schematic rev1.2 (functionally complete)
15:0815:08, 11 November 2019 diff hist +29‎ N File:ZX81plus38 rev1.3 picture.png ‎ Picture version current
10:4810:48, 11 November 2019 diff hist +4‎ m Designing the RhoCoCo Retro Home COlor COmputer hardware ‎ →‎I think I found a solution for the generation of an SPI signal for the SD-card reader
10:4710:47, 11 November 2019 diff hist +6‎ Designing the RhoCoCo Retro Home COlor COmputer hardware ‎ →‎I think I found a solution for the generation of an SPI signal for the SD-card reader
10:4310:43, 11 November 2019 diff hist +642‎ Designing the RhoCoCo Retro Home COlor COmputer hardware ‎ →‎Keyboard connections are not wrong, only spectrum, not ZX-81, compatible
10:3410:34, 11 November 2019 diff hist 0‎ Space invaders repair ‎ →‎11/11/2019 Done a course on CRT repair, and now know how to fix the CRT current
10:3310:33, 11 November 2019 diff hist +460‎ Space invaders repair ‎ →‎Drawn the schematic of the pseudo noise generator
10:1410:14, 11 November 2019 diff hist −3‎ Arcade repair course ‎No edit summary current

23:4123:41, 5 November 2019 diff hist +78‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎November 6, 2016 re-shaped the DIP pads to accommodate routing two wires between pads
23:3923:39, 5 November 2019 diff hist +662‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =
23:2723:27, 5 November 2019 diff hist +190‎ N File:Ratsnest ZX81+38.png ‎ rats-nest and modified pads before part and port optimizations to show that 2 wires in-between pas is necessary, and how the pads are re-shaped to accommodate two 0.2mm traces. current

00:3300:33, 3 November 2019 diff hist +648‎ Space invaders repair ‎ →‎Drawn the schematic of the pseudo noise generator
00:2200:22, 3 November 2019 diff hist +3‎ m Space invaders repair ‎No edit summary
00:0900:09, 3 November 2019 diff hist 0‎ Space invaders repair ‎No edit summary
00:0400:04, 3 November 2019 diff hist 0‎ Space invaders repair ‎No edit summary

13:2713:27, 1 November 2019 diff hist +59‎ Arcade repair course ‎No edit summary
11:0411:04, 1 November 2019 diff hist −2‎ Arcade repair course ‎No edit summary
11:0111:01, 1 November 2019 diff hist +1‎ Space invaders repair ‎ →‎23 september 2017 replaced the last LM3900
10:5510:55, 1 November 2019 diff hist +262‎ Arcade repair course ‎No edit summary
10:4510:45, 1 November 2019 diff hist 0‎ Arcade repair course ‎No edit summary
10:4510:45, 1 November 2019 diff hist +47‎ Arcade repair course ‎No edit summary
10:4310:43, 1 November 2019 diff hist +2‎ Arcade repair course ‎No edit summary
10:4210:42, 1 November 2019 diff hist +6‎ Arcade repair course ‎No edit summary
10:4110:41, 1 November 2019 diff hist 0‎ File:Nationaal video game museum.jpg ‎ Mahjongg uploaded a new version of File:Nationaal video game museum.jpg current
10:4010:40, 1 November 2019 diff hist +141‎ Arcade repair course ‎No edit summary
10:3810:38, 1 November 2019 diff hist 0‎ N File:Nationaal video game museum.jpg ‎No edit summary
10:3410:34, 1 November 2019 diff hist −17‎ Arcade repair course ‎No edit summary
10:3310:33, 1 November 2019 diff hist 0‎ N File:Randy Fromm 400x400.png ‎No edit summary current
10:3110:31, 1 November 2019 diff hist +349‎ Arcade repair course ‎ starter
10:2610:26, 1 November 2019 diff hist +342‎ N Arcade repair course ‎ starter

00:0100:01, 30 October 2019 diff hist +64‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =

23:5923:59, 29 October 2019 diff hist +2‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =
23:5923:59, 29 October 2019 diff hist +55‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =
23:5823:58, 29 October 2019 diff hist +31‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 30, 2016 First component placement =
23:5323:53, 29 October 2019 diff hist +199‎ ZX81plus38 simple to build ZX-81 clone ‎ →‎October 20, 2016 rev 1.3 supports 16K ROM's
23:4923:49, 29 October 2019 diff hist +10‎ ZX81plus38 simple to build ZX-81 clone ‎No edit summary
23:4823:48, 29 October 2019 diff hist +23‎ N File:ZX81+38 component overview proposal.png ‎ First try current
18:3518:35, 29 October 2019 diff hist +129‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎25 October 2019, PSG board tested and works!
18:3318:33, 29 October 2019 diff hist +32‎ N File:Layout sound expansion rev2.1 component overview.png ‎ component overview current

12:2312:23, 25 October 2019 diff hist +77‎ N Zon X-81 Programmable Sound Generator expansion for ZX81PLUS35 ‎ Mahjongg moved page Zon X-81 Programmable Sound Generator expansion for ZX81PLUS35 to Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35: forgot the 'Z' in ZX-81 current Tag: New redirect
12:2312:23, 25 October 2019 diff hist 0‎ m Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ Mahjongg moved page Zon X-81 Programmable Sound Generator expansion for ZX81PLUS35 to Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35: forgot the 'Z' in ZX-81
12:2212:22, 25 October 2019 diff hist +1‎ m Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎No edit summary
12:2112:21, 25 October 2019 diff hist +99‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎25 October 2019, PSG board tested and works!
12:2012:20, 25 October 2019 diff hist +181‎ Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card ‎ →‎23 October 2019, repaired definition 74LS02

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