Bijdragen van Mahjongg

28 jun 2022

• 22:5928 jun 2022 22:59 wijz gesch 0 Bestand:P1030119.JPG Mahjongg uploaded a new version of File:P1030119.JPG laatste wijziging
• 22:5828 jun 2022 22:58 wijz gesch −48 ZX81plus38 simple to build ZX-81 clone →The crystal oscillator is working!
• 22:5728 jun 2022 22:57 wijz gesch +66 N Bestand:P1030119.JPG A picture showing measuring the 13MHz crystal signal
• 22:5428 jun 2022 22:54 wijz gesch +7 ZX81plus38 simple to build ZX-81 clone →The crystal oscillator is working!
• 22:5228 jun 2022 22:52 wijz gesch −2 ZX81plus38 simple to build ZX-81 clone →The crystal oscillator is working!
• 22:5228 jun 2022 22:52 wijz gesch +108 ZX81plus38 simple to build ZX-81 clone →It happened I uploaded all ZX81+38 revision 1.7 files to GitHub

23 jun 2022

• 17:0623 jun 2022 17:06 wijz gesch +638 ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7

22 jun 2022

• 21:3522 jun 2022 21:35 wijz gesch 0 k ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
• 21:3022 jun 2022 21:30 wijz gesch +78 ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
• 21:2922 jun 2022 21:29 wijz gesch +74 N Bestand:ZX81+38 rev 1.7 component placement.png Updated version with U21 = 74HC04 ,rotated J3 and R21 = 330R laatste wijziging
• 20:2722 jun 2022 20:27 wijz gesch +41 ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
• 20:2622 jun 2022 20:26 wijz gesch 0 N Bestand:ZX81plus38 Rev 1,7-resized.png Geen bewerkingssamenvatting laatste wijziging
• 20:0322 jun 2022 20:03 wijz gesch +1 k ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
• 19:3522 jun 2022 19:35 wijz gesch +36 N Bestand:ZX81plus38 Rev 1,7-1.png rev 1.7 as PNG picture laatste wijziging
• 19:2922 jun 2022 19:29 wijz gesch +59 ZX81plus38 simple to build ZX-81 clone →juni 22 2022, got a free Xtal and 74HCU04, Finished Revision 1.7
• 19:2722 jun 2022 19:27 wijz gesch +94 N Bestand:ZX81plus38 Rev 1,7.pdf schematic revision 1.7 with various updates, see bottom right block of schematic laatste wijziging
• 19:2522 jun 2022 19:25 wijz gesch +2.237 ZX81plus38 simple to build ZX-81 clone →juni 7 2022, still have crystal oscilator problems for my own copy

8 jun 2022

• 15:288 jun 2022 15:28 wijz gesch −1 k ZX81plus38 simple to build ZX-81 clone →May 24, 2020 slowly making progress
• 15:278 jun 2022 15:27 wijz gesch +568 ZX81plus38 simple to build ZX-81 clone →juni 1 2022, crystal oscilator is working!

1 jun 2022

• 18:551 jun 2022 18:55 wijz gesch +74 ZX81plus38 simple to build ZX-81 clone →juni 1 2022, crystal oscilator is working!
• 18:531 jun 2022 18:53 wijz gesch +1 k ZX81plus38 simple to build ZX-81 clone →juni 1 2022, crystal oscilator is working!
• 18:521 jun 2022 18:52 wijz gesch +458 ZX81plus38 simple to build ZX-81 clone →juni 1 2022, crystal oscilator is working!
• 17:241 jun 2022 17:24 wijz gesch +222 k ZX81plus38 simple to build ZX-81 clone →juni 1 2022, crystal oscilator is working!
• 17:201 jun 2022 17:20 wijz gesch +766 ZX81plus38 simple to build ZX-81 clone →junu 1 2022, crystal oscilator is working!
• 17:091 jun 2022 17:09 wijz gesch +6 k ZX81plus38 simple to build ZX-81 clone Geen bewerkingssamenvatting
• 13:101 jun 2022 13:10 wijz gesch +96 ZX81plus38 simple to build ZX-81 clone →May 24, 2020 slowly making progress

25 mei 2022

• 02:5425 mei 2022 02:54 wijz gesch +4 k ZX81plus38 simple to build ZX-81 clone →May 24, 2020 slowly making progress
• 01:4425 mei 2022 01:44 wijz gesch +186 k ZX81plus38 simple to build ZX-81 clone →May 24, 2020 slowly making progress
• 01:4225 mei 2022 01:42 wijz gesch +14 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
• 01:4125 mei 2022 01:41 wijz gesch +54 ZX81plus38 simple to build ZX-81 clone →May 24, 2020 slowly making progress
• 01:4025 mei 2022 01:40 wijz gesch +3.214 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

4 mei 2022

• 13:354 mei 2022 13:35 wijz gesch +2 ZX81plus38 simple to build ZX-81 clone →April 17, 2022 I Produced a component placement diagram for rev 1.6
• 13:354 mei 2022 13:35 wijz gesch +3 k 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
• 13:344 mei 2022 13:34 wijz gesch +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
• 13:334 mei 2022 13:33 wijz gesch +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
• 13:294 mei 2022 13:29 wijz gesch +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
• 13:184 mei 2022 13:18 wijz gesch +442 N Bestand: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... laatste wijziging

3 mei 2022

• 19:483 mei 2022 19:48 wijz gesch −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
• 19:473 mei 2022 19:47 wijz gesch +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
• 19:333 mei 2022 19:33 wijz gesch +36 N Bestand:Opgebouwd.JPG Zonder geplaatste IC's laatste wijziging
• 19:273 mei 2022 19:27 wijz gesch +340 ZX81plus38 simple to build ZX-81 clone →April 17, 2022 I Produced a component placement diagram for rev 1.6

18 apr 2022

• 17:2218 apr 2022 17:22 wijz gesch +1 k ZX81plus38 simple to build ZX-81 clone →April 17, 2022 I Produced a component placement diagram for rev 1.6
• 17:1618 apr 2022 17:16 wijz gesch +41 ZX81plus38 simple to build ZX-81 clone →April 17, 2022 I Produced a component placement diagram for rev 1.6
• 17:1318 apr 2022 17:13 wijz gesch +4 k ZX81plus38 simple to build ZX-81 clone →April 17, 2022 Produced component placement diagram for rev 1.6

17 apr 2022

• 21:5417 apr 2022 21:54 wijz gesch +2 k ZX81plus38 simple to build ZX-81 clone →April 17, 2022 Produced component placement diagram for rev 1.6
• 21:5117 apr 2022 21:51 wijz gesch +58 N Bestand: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 laatste wijziging Label: Nieuwe doorverwijzing
• 21:5117 apr 2022 21:51 wijz gesch 0 k Bestand: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 laatste wijziging
• 21:4917 apr 2022 21:49 wijz gesch +743 ZX81plus38 simple to build ZX-81 clone →April 17, 2022 Produced component placement diagram for rev 1.6
• 21:4117 apr 2022 21:41 wijz gesch +71 ZX81plus38 simple to build ZX-81 clone →26 november 2020, I found a suitable soldering iron at home
• 21:3617 apr 2022 21:36 wijz gesch +61 N Bestand:ZX81+38 rev 1.6 component placement.png component placement drawing for ZX81+38 rev 1.6