Uploads by Mahjongg
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This special page shows all uploaded files.
| Date | Name | Thumbnail | Size | Description | Versions |
|---|---|---|---|---|---|
| 22:38, 15 October 2019 | ZX81plus38 rev1.2.pdf (file) |  |
237 KB | Added Xtal frequency | 2 |
| 23:45, 12 October 2019 | ZX81plus38 rev 1.1.pdf (file) | |
208 KB | 1 | |
| 13:09, 9 October 2019 | ZX81plus38 rev 1.0 further cropped.png (file) |  |
411 KB | Cropped to 2339 by 1655 pixels, while still readable | 1 |
| 13:04, 9 October 2019 | Preliminary ZX81plus38 resized.png (file) | Error creating thumbnail: File with dimensions greater than 12.5 MP |
674 KB | 5 | |
| 22:20, 8 October 2019 | ZX81plus38.pdf (file) | |
198 KB | 3 | |
| 11:17, 7 October 2019 | Preliminary ZX81plus38.png (file) | Error creating thumbnail: File with dimensions greater than 12.5 MP |
643 KB | preliminary (unfinished) ZX81+38 schematic, about 95% finished, but not started with layout yet (except initial placement of essential parts and mounting holes). | 1 |
| 23:15, 24 September 2019 | Estimate placement ZX81+38.png (file) |  |
175 KB | First estimate of all the logic will fit on a ZX-81 size board | 1 |
| 20:57, 11 September 2019 | ZX81+35 keyboard bottom.png (file) |  |
91 KB | solder side with solder mask | 1 |
| 20:51, 11 September 2019 | ZX81+35 keyboard top.png (file) |  |
22 KB | componentenzijde met tekstopdruk, maar geen soldeermasker | 1 |
| 23:41, 10 September 2019 | Keyboard PCB ZX81plus35.png (file) |  |
22 KB | 1 | |
| 23:36, 4 September 2019 | ZX-81 Keyboard-F.SilkS.pdf (file) | |
13 KB | preview of keyboard PCB | 1 |
| 20:09, 4 September 2019 | ZX-81plus35 Keyboard PCB schematic.png (file) |  |
91 KB | Correct schematic rev 1.1 | 1 |
| 20:01, 4 September 2019 | ZX-81plus35 Keyboard.pdf (file) | |
43 KB | Rev 1.1 with corrected D4 .. D0 order | 1 |
| 16:16, 2 September 2019 | ZX81+35 silkscreen overview rev4.png (file) |  |
106 KB | 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 |
| 23:02, 27 August 2019 | ZX-81 Keyboard PCB.pdf (file) | |
43 KB | Schematic of ZX81+35 keyboard PCB for ZX81+35 revision 4.0 | 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 |
| 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 |
| 21:03, 11 June 2019 | RHOCOCO rev2.1.pdf (file) | |
197 KB | changed 100nF cap C13 to 470uF 6V3 to solve inrush current crashes when inserting SD-cards. | 1 |
| 16:42, 11 June 2019 | IOExpander working cropped.JPG (file) |  |
141 KB | I/O expander reading the SD-card interface with a write protected card inserted. | 1 |
| 20:36, 4 June 2019 | Rhococo, first video screen cropped.JPG (file) |  |
222 KB | 1 | |
| 11:36, 22 May 2019 | VGA TEXT DEMO.jpg (file) |  |
119 KB | 1 | |
| 23:04, 21 May 2019 | Vga spin.pdf (file) | |
54 KB | 1 | |
| 23:03, 21 May 2019 | Vga text spin.pdf (file) | |
33 KB | 1 | |
| 23:03, 21 May 2019 | Vga text demo spin.pdf (file) | |
19 KB | 1 | |
| 21:14, 3 May 2019 | RhoCoCo Rev 2,0.png (file) |  |
76 KB | version with RESETn pullup eanbled | 1 |
| 21:01, 3 May 2019 | RHOCOCO rev2.0.pdf (file) | |
197 KB | all updates of rev1.9 plus with POEn tied low for 5K internal pullup on RESETn | 2 |
| 22:15, 23 April 2019 | Layout Rhococo rev1,9.png (file) |  |
77 KB | extra load resistors on 3V3, and VCC of RAM. Pitch of capacitors changed to 5mm. cleaned up resistor placement. wrote serial programmer interface pinout beneath opening in sd-card holder. | 1 |
| 22:02, 23 April 2019 | RHOCOCO rev 1,9.pdf (file) | |
197 KB | Solved SRAM 4.8V, and 3,9V problems with two new load resistors | 1 |
| 15:37, 9 April 2019 | Propeller IDE.png (file) |  |
167 KB | 1 | |
| 21:10, 6 April 2019 | RHOCOCO with keyboard.jpg (file) |  |
971 KB | cropped | 2 |
| 15:35, 6 April 2019 | Family picture.jpg (file) |  |
1.7 MB | The inspiration that lead tot RHOCOCO | 1 |
| 12:50, 5 April 2019 | Rhococo concept art.png (file) |  |
367 KB | alt and enter | 21 |
| 12:04, 3 April 2019 | IMG 20190403 001506.jpg (file) |  |
959 KB | cropped and rotated | 3 |
| 22:18, 2 April 2019 | IMG 20190403 001201.jpg (file) |  |
1.98 MB | The new born | 1 |
| 22:10, 2 April 2019 | IMG 20190403 000550.jpg (file) |  |
1.84 MB | First power front view | 1 |
| 22:09, 2 April 2019 | IMG 20190403 000459.jpg (file) |  |
1.87 MB | First power 2 | 1 |
| 22:07, 2 April 2019 | IMG 20190403 000449.jpg (file) |  |
1.9 MB | First power 1 | 1 |
| 09:59, 2 April 2019 | IMG 20190402 114017.jpg (file) |  |
818 KB | cropped | 2 |
| 11:28, 1 April 2019 | IMG 20190330 213317.jpg (file) |  |
1.19 MB | cropped | 2 |
| 00:12, 31 March 2019 | IMG 20190331 005754.jpg (file) |  |
115 KB | cropped | 2 |
| 21:02, 30 March 2019 | IMG 20190330 212947.jpg (file) |  |
2.05 MB | 1 | |
| 21:01, 30 March 2019 | IMG 20190330 205013.jpg (file) |  |
2.03 MB | 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 |
| 12:05, 29 March 2019 | Rhococo rev 1.8 component overview.pdf (file) | |
31 KB | Drawing to assist assembly of Rhococo rev 1.8 | 1 |
| 14:36, 28 March 2019 | IMG 20190328 152503.jpg (file) |  |
356 KB | cropped | 2 |
| 22:11, 26 March 2019 | RHOCOCO rev 1.8 BOM.pdf (file) | |
54 KB | 5 | |
| 00:15, 20 March 2019 | Schermafdruk van 2019-03-20 01-13-00.png (file) |  |
208 KB | Screen-shot of spreadsheet with part of the BOM for rhococo rev1.8 | 1 |
| 19:37, 7 March 2019 | IMG 20190307 202855.jpg (file) |  |
1.7 MB | Hopelijk iets betere. Foto | 1 |
| 19:17, 7 March 2019 | IMG 20190307 195208.jpg (file) |  |
201 KB | cropped and resized | 2 |
| 19:14, 7 March 2019 | IMG 20190307 195152.jpg (file) |  |
356 KB | cropped | 2 |
