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This special page shows all uploaded files.
| Date | Name | Thumbnail | Size | User | Description | Versions |
|---|---|---|---|---|---|---|
| 12:17, 20 January 2015 | ZX81+34 versus ZX81.jpg (file) |  |
202 KB | Mahjongg | comparison between ZX81+34 and original ZX81 | 1 |
| 22:36, 23 January 2016 | ZX81+358 rev2.2 Bill Of Materials.ods (file) |  |
23 KB | Mahjongg | final version BOM for ZX81+35 rev 2.2 | 2 |
| 22:34, 26 January 2016 | ZX81+35 REV 2.2.pdf (file) |  |
68 KB | Mahjongg | Small update, changed RCA plug GND wiring so both pads are GND | 10 |
| 22:21, 21 February 2016 | ZX81+35 REV 2.2 built up.JPG (file) |  |
2.91 MB | Mahjongg | All components soldered to the board, except part of the Joystick logic (to make debugging the keyboard layout easier) | 1 |
| 22:36, 26 January 2016 | ZX81+35 REV 2.2 color.pdf (file) | |
72 KB | Mahjongg | color version | 1 |
| 23:59, 2 February 2016 | ZX81+35 REV 2.3.pdf (file) | |
68 KB | Mahjongg | rev 2.3 with ZX81 compatible keyboard interface. | 1 |
| 22:08, 26 January 2016 | ZX81+35 REV 2.utsch.sch (file) | |
3.2 MB | Mahjongg | This is a preliminary backup of ZX81+35.UTSCH uploaded as a ".SCH" to circumvent permitted file types | 1 |
| 23:59, 2 April 2016 | ZX81+35 REV 3.0.pdf (file) | |
68 KB | Mahjongg | Changed R59 to 10K (from 4K7) for better stability with cassette interface pulses that contain a lot of odd harmonics, which would otherwise randomly "split" the pulse in two digital pulses. | 7 |
| 23:24, 21 August 2016 | ZX81+35 REV 4.0.pdf (file) | |
68 KB | Mahjongg | 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... | 1 |
| 21:55, 30 June 2020 | ZX81+35 REV 4.1 schematic.pdf (file) | |
68 KB | Mahjongg | The lates schematic, 30 June, 2020 rev 4,1 of ZX81+35 | 1 |
| 17:07, 21 March 2022 | ZX81+35 REV 4.2. schematic color.pdf (file) | |
73 KB | Mahjongg | 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 | 1 |
| 17:32, 21 March 2022 | ZX81+35 REV 4.2 layout preview.PDF (file) | |
210 KB | Mahjongg | Top layer plus silk screen preview of ZX81+35 Rev4.2 | 1 |
| 22:21, 23 January 2016 | ZX81+35 Rev 2.2 - Bill Of Materials-1.png (file) |  |
261 KB | Mahjongg | Bill of materials ZX81+34 Rev 2.2 page 1 | 1 |
| 22:32, 23 January 2016 | ZX81+35 Rev 2.2 - Bill Of Materials-2.png (file) |  |
245 KB | Mahjongg | BILL OF MATERIALS ZX81+35 rev 2.2 page 2 | 1 |
| 23:35, 16 March 2016 | ZX81+35 fixed video.jpg (file) |  |
109 KB | Mahjongg | 1 | |
| 20:57, 11 September 2019 | ZX81+35 keyboard bottom.png (file) |  |
91 KB | Mahjongg | solder side with solder mask | 1 |
| 20:51, 11 September 2019 | ZX81+35 keyboard top.png (file) |  |
22 KB | Mahjongg | componentenzijde met tekstopdruk, maar geen soldeermasker | 1 |
| 23:45, 16 March 2016 | ZX81+35 perfect checkerboard.jpg (file) |  |
109 KB | Mahjongg | 2 | |
| 22:42, 23 January 2016 | ZX81+35 rev2.2 - Bill Of Materials.pdf (file) | |
26 KB | Mahjongg | better version | 2 |
| 22:11, 30 December 2015 | ZX81+35 rev 2.2 schematic.png (file) |  |
674 KB | Mahjongg | December 30, 2015 replaced U10 with spare inverter, renamed U32 to U10, added decoupling cap. | 7 |
| 18:23, 1 April 2016 | ZX81+35 revision 2.2 december 2015 front preview.png (file) |  |
228 KB | Mahjongg | New updated version with pinheader keyboard connection and mounting holes | 2 |
| 22:06, 22 December 2015 | ZX81+35 revision 2.2 preview.png (file) |  |
366 KB | Mahjongg | CHANGED PINHEADER TO DB9 CONNECTOR ON TOP OF COMPONENTS | 2 |
| 23:07, 20 October 2019 | ZX81+35 revision 4.0 with keyboard.JPG (file) |  |
917 KB | Mahjongg | 1 | |
| 16:17, 10 January 2016 | ZX81+35 silkscreen overview.png (file) |  |
84 KB | Mahjongg | zx81+35 revision 2.2 component placement drawing | 1 |
| 16:16, 2 September 2019 | ZX81+35 silkscreen overview rev4.png (file) |  |
106 KB | Mahjongg | Annotated all the changes that were made in Rev 4.0 in this new assembly drawing, showing which components go where on a Rev 4.0 ZX81plus35 board. | 1 |
| 00:28, 4 March 2020 | ZX81+38 4 maart 2020.png (file) |  |
66 KB | Mahjongg | Final 100% routed, with copper fill. | 1 |
| 23:48, 29 October 2019 | ZX81+38 component overview proposal.png (file) |  |
8 KB | Mahjongg | First try | 1 |
| 14:57, 10 September 2022 | ZX81+38 keyboard PCB preview.png (file) |  |
239 KB | Mahjongg | revision 1.2 has text repaired of the silkscreen lettering below the buttons, the sequence "YUIOP" was repaired as wel as the "10", which should have been "0", also the text was made a tiny bit bolder. | 4 |
| 23:33, 20 September 2022 | ZX81+38 loading from cassette.JPG (file) |  |
2.73 MB | Mahjongg | 1 | |
| 21:36, 17 April 2022 | ZX81+38 rev 1.6 component placement.png (file) |  |
31 KB | Mahjongg | component placement drawing for ZX81+38 rev 1.6 | 1 |
| 21:29, 22 June 2022 | ZX81+38 rev 1.7 component placement.png (file) |  |
49 KB | Mahjongg | Updated version with U21 = 74HC04 ,rotated J3 and R21 = 330R | 1 |
| 15:30, 10 July 2022 | ZX81+38 rev 1.8component placement.png (file) |  |
81 KB | Mahjongg | 1 | |
| 20:40, 2 May 2023 | ZX81+38 rev 1.9 component placement.png (file) |  |
59 KB | Mahjongg | Moved 15pF capacitors below crystal, and RP1 is a 10K resistor packet | 3 |
| 00:30, 22 March 2023 | ZX81+38keyboard .JPG (file) |  |
723 KB | Mahjongg | 1 | |
| 00:23, 22 March 2023 | ZX81+38keyboard seen from top.JPG (file) |  |
713 KB | Mahjongg | 1 | |
| 23:33, 15 October 2020 | ZX81+38rev1,5 bottom.png (file) |  |
287 KB | Mahjongg | bottom (solder) side | 1 |
| 23:22, 15 October 2020 | ZX81+38rev1,5 top.png (file) |  |
386 KB | Mahjongg | Top (component) side revision 1.5 16 october 2020 | 1 |
| 23:03, 20 October 2015 | ZX81PLUS34 rev 2.1.pdf (file) | |
65 KB | Mahjongg | REMOVED BUFFER U25? ADDED CAPACITOR C21 CHANGED MICRO USB CONNECTOR TO FCI TYPE | 2 |
| 20:17, 24 January 2015 | ZX81 CHARSET.png (file) |  |
2 KB | Mahjongg | Original character font of ZX81 | 1 |
| 22:38, 17 January 2015 | ZX81 PCB.jpg (file) |  |
82 KB | Mahjongg | original ZX81 PCB | 1 |
| 18:29, 29 November 2016 | ZX81plus34 kleur rev 1.0.pdf (file) | |
69 KB | Mahjongg | 1 | |
| 15:32, 28 November 2016 | ZX81plus34 rev2.00 schema.pdf (file) | |
72 KB | Mahjongg | Original first version ZX81+34 with no plus sign in filename. | 1 |
| 14:00, 24 November 2016 | ZX81plus35(ZX14) - Bill Of Materials corrected.ods (file) | |
10 KB | Mahjongg | re-upload without + in filename | 1 |
| 13:54, 24 November 2016 | ZX81plus35 REV 2.2.pdf (file) | |
68 KB | Mahjongg | re-upload version without + in filename | 1 |
| 13:54, 24 November 2016 | ZX81plus35 REV 2.2 color.pdf (file) | |
72 KB | Mahjongg | re-upload version without + in filename | 1 |
| 18:45, 29 November 2016 | ZX81plus35 REV 3.0 13 3 16.pdf (file) | |
75 KB | Mahjongg | version of rev 3.0 without + in filename | 1 |
| 22:44, 1 November 2016 | ZX81plus35 REV 4.0.pdf (file) | |
68 KB | Mahjongg | schematic ZX81+35 revision 4 filename without + character | 1 |
| 22:34, 1 November 2016 | ZX81plus35 REV 4.0 Layout.png (file) |  |
233 KB | Mahjongg | FINISHED_LAYOUT_20_SEPTEMBER_2016_FULL Filename now without + sign | 1 |
| 23:01, 22 October 2019 | ZX81plus35 silkscreen overview rev4.png (file) |  |
108 KB | Mahjongg | Corrected TURBO / NORMAL | 5 |
| 22:20, 8 October 2019 | ZX81plus38.pdf (file) | |
198 KB | Mahjongg | 3 |
