File:ZX81+35 REV 3.0.pdf
Jump to navigation
Jump to search
ZX81+35_REV_3.0.pdf (file size: 68 KB, MIME type: application/pdf)
first version of non prototype ZX81+35
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 23:59, 2 April 2016 | (68 KB) | Mahjongg (talk | contribs) | 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. |
| 17:23, 28 March 2016 | (68 KB) | Mahjongg (talk | contribs) | changed 10uF cap in cassette interface to 4n7 | |
| 14:49, 27 March 2016 | (68 KB) | Mahjongg (talk | contribs) | Implemented working cassette input interface | |
| 00:22, 23 March 2016 | (68 KB) | Mahjongg (talk | contribs) | Changed the cassette port (first attempt) | |
| 02:04, 20 March 2016 | (68 KB) | Mahjongg (talk | contribs) | Changed 2N7002 FETs in joystick interface to MMBT3904 NPN Transistors, source gate capacitance FETs had negative influence on keyboard timing | |
| 21:17, 19 March 2016 | (68 KB) | Mahjongg (talk | contribs) | Inverted clock of U18b. | |
| 21:02, 13 March 2016 | (68 KB) | Mahjongg (talk | contribs) | first version of non prototype ZX81+35 |
You cannot overwrite this file.
File usage
There are no pages that use this file.