Uploads by Mahjongg
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This special page shows all uploaded files.
| Date | Name | Thumbnail | Size | Description | Versions |
|---|---|---|---|---|---|
| 20:17, 24 January 2015 | ZX81 CHARSET.png (file) |  |
2 KB | Original character font of ZX81 | 1 |
| 15:28, 25 March 2016 | Spice model of cassette interface ZX81+35.pdf (file) |  |
5 KB | improved cassette interface | 1 |
| 14:46, 11 October 2022 | TZXDuino pico-F Cu.pdf (file) | |
5 KB | top pads to check footprints | 1 |
| 12:57, 27 August 2019 | Rhococo Retro HOme COlor Computer design specs .odt (file) |  |
5 KB | My first ideas about rhococo (in Dutch). | 1 |
| 23:45, 14 November 2017 | SNES JOYPAD BASE.png (file) |  |
7 KB | smaller version | 2 |
| 11:59, 31 March 2015 | Z81+34 BOM.ods (file) | |
7 KB | New type of buttons with longer plungers | 2 |
| 23:48, 29 October 2019 | ZX81+38 component overview proposal.png (file) |  |
8 KB | First try | 1 |
| 21:16, 17 September 2017 | 250px-CassetteAndMicrocassette.jpg (file) |  |
8 KB | A comparison between microcasettes and normal audio cassettes. | 1 |
| 23:28, 3 November 2015 | ODYSSEY 2016 PINHEADER ONLY.pdf (file) | |
9 KB | NUMBERING SCHEME ODYSSEY CARTRIDGE HEADER TO GERMAN SCHEMATIC | 1 |
| 14:00, 24 November 2016 | ZX81plus35(ZX14) - Bill Of Materials corrected.ods (file) | |
10 KB | re-upload without + in filename | 1 |
| 12:45, 27 August 2019 | My Home Computer intro.odt (file) | |
10 KB | My original thoughts about designing a retro home computer written in 2010. | 1 |
| 21:50, 28 May 2023 | Keyboard on top of case.JPG (file) |  |
11 KB | 1 | |
| 11:12, 6 September 2017 | LogicProbe4011.png (file) |  |
12 KB | the principle of my logic probe | 1 |
| 22:53, 18 December 2018 | S-l1600.jpg (file) |  |
12 KB | cropped, and changed to 8-lead version. | 2 |
| 11:03, 25 September 2017 | P2000T keyboard matrix.png (file) |  |
12 KB | 1 | |
| 16:03, 13 November 2017 | Simplified pseudo random generator.png (file) |  |
13 KB | 1 | |
| 23:36, 4 September 2019 | ZX-81 Keyboard-F.SilkS.pdf (file) | |
13 KB | preview of keyboard PCB | 1 |
| 13:26, 20 January 2015 | ZX81+34 opgeleukte fontset.png (file) |  |
14 KB | ZX81 font modified for ZX81+34 | 1 |
| 12:05, 29 March 2019 | RHOCOCO rev 1.8 assembly list.pdf (file) | |
14 KB | Spreadsheet to assist assembly of RhoCoCo rev 1.8 | 1 |
| 16:12, 2 April 2017 | Space invaders test.jpg (file) |  |
15 KB | 1 | |
| 11:51, 27 March 2016 | Swing.png (file) |  |
15 KB | 1 | |
| 22:34, 28 February 2017 | Emulator schematics.pdf (file) | |
15 KB | Schematic of Retro console with a raspberry PI Zero W Revision 1.0 | 1 |
| 23:03, 16 May 2017 | LED CHASER.PNG (file) |  |
15 KB | 1 | |
| 22:51, 21 March 2017 | Emulator JOYPAD schematics.pdf (file) | |
16 KB | 1 | |
| 14:27, 8 October 2018 | 719gZirJI6L. SY355 .jpg (file) |  |
18 KB | Supply suitable for my Hydra, after protecting settings with duct tape. | 1 |
| 23:45, 11 September 2020 | ZX81plus38 BOM.ods (file) | |
18 KB | The Bill Of materials plus order codes for either Farnell, or Mouser | 1 |
| 21:20, 7 June 2016 | Sound expansion (preliminary).pdf (file) | |
18 KB | ADDED PRELIMINARY LOGIC | 3 |
| 23:03, 21 May 2019 | Vga text demo spin.pdf (file) | |
19 KB | 1 | |
| 21:06, 14 June 2016 | ZON X sound expansion.pdf (file) | |
19 KB | ZX81 Programmable Sound expansion from BI-PAK; succeed the earlier model ZON X-81 | 1 |
| 23:00, 7 December 2016 | 81b5dZtIPLL. SX522 .jpg (file) |  |
19 KB | SNES controller | 1 |
| 21:32, 12 July 2016 | PSG for ZX81+35 REV 1.2.pdf (file) | |
20 KB | third version | 1 |
| 15:28, 25 March 2016 | Wave forms on cassette interface ZX81+35.pdf (file) | |
20 KB | Simulation of wave forms on improved cassette interface | 1 |
| 21:29, 5 July 2016 | PSG for ZX81+35 REV 1.1.pdf (file) | |
20 KB | 1 | |
| 20:51, 11 September 2019 | ZX81+35 keyboard top.png (file) |  |
22 KB | componentenzijde met tekstopdruk, maar geen soldeermasker | 1 |
| 23:17, 14 November 2017 | SNES JOYPAD BASE.pdf (file) | |
22 KB | 1 | |
| 23:41, 10 September 2019 | Keyboard PCB ZX81plus35.png (file) |  |
22 KB | 1 | |
| 21:03, 21 June 2016 | ZONX sound expansion REV 2,0.pdf (file) | |
22 KB | 2 | |
| 22:19, 18 December 2018 | Rhococo keyboard PCB Layout for rev 1,8.png (file) |  |
22 KB | 8x8mm Corner cutouts, enlarged solderpads for 6-wire and 8-wire cables. | 1 |
| 21:54, 19 July 2016 | PSG for ZX81+35 REV 1.3.pdf (file) | |
22 KB | FIRST VERSION WITH SD-CARD SLOT | 1 |
| 22:36, 23 January 2016 | ZX81+358 rev2.2 Bill Of Materials.ods (file) | |
23 KB | final version BOM for ZX81+35 rev 2.2 | 2 |
| 22:28, 24 July 2016 | PSG for ZX81+35 REV 1.4.pdf (file) | |
23 KB | corrected resistor values, so that SD can actually pull down level on PSG below logic low level of PSG. | 2 |
| 22:42, 23 January 2016 | ZX81+35 rev2.2 - Bill Of Materials.pdf (file) | |
26 KB | better version | 2 |
| 18:34, 17 January 2019 | Rhococo keys detail, with 3mm thick wood.PNG (file) |  |
26 KB | Test to see if 3mm thick wood on a 5.8mm high brass standoff offers gives the keys enough height to peek through the hole above the wood, left key is "pressed" (0.35mm lowered). Conclusion, all is well. | 1 |
| 20:27, 9 August 2016 | PSG for ZX81+35 REV 1.6.pdf (file) | |
26 KB | version with DM3D-SF card reader. | 1 |
| 21:02, 26 July 2016 | PSG for ZX81+35 REV 1.5.pdf (file) | |
26 KB | Added possibility to use multiple PSG boards. | 1 |
| 21:55, 25 September 2018 | Keyboard PCB layout 2018-09-19 01-33-02.png (file) |  |
26 KB | Checked (errors repaired) and optimized plus added drill holes | 2 |
| 20:44, 27 September 2016 | PSG for ZX81+35 REV 2.0.pdf (file) | |
26 KB | version with corrected orientation (rotation) of expansion connector(s) | 1 |
| 22:57, 1 November 2016 | PSG for ZX81plus35 REV 2.0.pdf (file) | |
26 KB | filename without + sign | 1 |
| 23:49, 17 July 2018 | KEYBOARD-z80ram-KEYBOARD.pdf (file) | |
28 KB | First version of keyboard I/O with joystick interface | 1 |
| 22:07, 22 October 2019 | Sound expansion rev 2.1.pdf (file) | |
28 KB | Rev 2.1 23 Oktober 2019; definition 74LS02 repaired | 1 |
