User contributions for Mahjongg

13 September 2016

• 21:5921:59, 13 September 2016 diff hist +46 ZX81PLUS35 ZX81 clone →13 September 2016 Reached 100% connectivity
• 21:5821:58, 13 September 2016 diff hist +302 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0

5 September 2016

• 21:2621:26, 5 September 2016 diff hist +68 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0
• 21:2421:24, 5 September 2016 diff hist +13 m ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0
• 21:2121:21, 5 September 2016 diff hist −5 Magnavox Odyssey No edit summary current
• 21:2121:21, 5 September 2016 diff hist −2 Magnavox Odyssey →September 2016
• 21:2121:21, 5 September 2016 diff hist +78 Magnavox Odyssey No edit summary
• 21:1921:19, 5 September 2016 diff hist +100 Galaksija No edit summary
• 21:1221:12, 5 September 2016 diff hist 0 ZX81PLUS35 ZX81 clone →This is how I envision what a ZX81+35 expansion board could look like
• 21:1221:12, 5 September 2016 diff hist +246 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0
• 21:0821:08, 5 September 2016 diff hist +5 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0
• 21:0721:07, 5 September 2016 diff hist +572 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35 Updating to rev 4.0
• 21:0021:00, 5 September 2016 diff hist +116 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →september 2016
• 20:5920:59, 5 September 2016 diff hist +221 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →september 2016
• 20:5620:56, 5 September 2016 diff hist +2 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →september 2016
• 20:5620:56, 5 September 2016 diff hist +493 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.6, decided upon a DM3D Push-Pull micro-SD card reader

21 August 2016

• 23:4623:46, 21 August 2016 diff hist +20 ZX81PLUS35 ZX81 clone →Found basic, but major error in ZX81+35
• 23:4623:46, 21 August 2016 diff hist +1,066 ZX81PLUS35 ZX81 clone →Started design of my own PSG board
• 23:2423:24, 21 August 2016 diff hist +394 N File:ZX81+35 REV 4.0.pdf New schematic which has the edge connector rotated 180 degrees, to correspond with the layout which has to get the same correction to correspond to the original ZX81 which has pin 1 on the left hand side (bottom side for the ZX81+35) also the edge conn...

9 August 2016

• 20:5220:52, 9 August 2016 diff hist +45 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.6, decided upon a DM3D Push-Pull micro-SD card reader
• 20:5020:50, 9 August 2016 diff hist 0 N File:PSG for ZX81+35 REV 1.6.png No edit summary
• 20:2920:29, 9 August 2016 diff hist +26 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.6, decided upon a DM3D Push-Pull micro-SD card reader
• 20:2720:27, 9 August 2016 diff hist +33 N File:PSG for ZX81+35 REV 1.6.pdf version with DM3D-SF card reader.
• 20:2420:24, 9 August 2016 diff hist +332 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support

27 July 2016

• 18:3118:31, 27 July 2016 diff hist 0 File:PSG for ZX81+35 REV 1.3 3D PREVIEW.png Mahjongg uploaded a new version of File:PSG for ZX81+35 REV 1.3 3D PREVIEW.png

26 July 2016

• 21:3021:30, 26 July 2016 diff hist 0 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:2921:29, 26 July 2016 diff hist 0 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:2921:29, 26 July 2016 diff hist +7 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:2821:28, 26 July 2016 diff hist −7 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:2821:28, 26 July 2016 diff hist +45 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:2621:26, 26 July 2016 diff hist +17 N File:PSG for ZX81+35 REV 1.5.png multi PSG support
• 21:1621:16, 26 July 2016 diff hist +1 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.5 with multiple PSG board support
• 21:1521:15, 26 July 2016 diff hist +680 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:0221:02, 26 July 2016 diff hist +45 N File:PSG for ZX81+35 REV 1.5.pdf Added possibility to use multiple PSG boards.

24 July 2016

• 22:3122:31, 24 July 2016 diff hist +185 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 22:2822:28, 24 July 2016 diff hist 0 File:PSG for ZX81+35 REV 1.4.pdf Mahjongg uploaded a new version of File:PSG for ZX81+35 REV 1.4.pdf
• 21:3321:33, 24 July 2016 diff hist +7 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:3021:30, 24 July 2016 diff hist −7 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:3021:30, 24 July 2016 diff hist 0 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:2921:29, 24 July 2016 diff hist +7 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:2821:28, 24 July 2016 diff hist +38 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →Revision 1.4 with level shifting resistor dividers
• 21:2521:25, 24 July 2016 diff hist +30 N File:PSG for ZX81+35 REV 1.4.png version with resistor dividers
• 21:1621:16, 24 July 2016 diff hist +526 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →second final version, with sd-card interface
• 21:0821:08, 24 July 2016 diff hist +199 N File:PSG for ZX81+35 REV 1.4.pdf revised version with resistor dividers between PSG and SD-card slot to convert 5V PSG levels to 3V3 SD-card levels, datalines are pulled up clock and latch lines not (pulled low by resistor divider).
• 14:0314:03, 24 July 2016 diff hist +872 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →second final version, with sd-card interface

21 July 2016

• 13:4413:44, 21 July 2016 diff hist +46 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →second final version, with sd-card interface
• 13:4313:43, 21 July 2016 diff hist +57 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card No edit summary
• 13:4113:41, 21 July 2016 diff hist +43 N File:PSG for ZX81+35 REV 1.3 3D PREVIEW.png PSG board with SD-card interface 3D preview

19 July 2016

• 22:0022:00, 19 July 2016 diff hist −3 m Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →second final version, without sd-card interface
• 22:0022:00, 19 July 2016 diff hist +153 Zon ZX-81 Programmable Sound Generator expansion for ZX81PLUS35 with working SD-Card →first final version, without sd-card interface