Anyone looking for a load of Sinclair ZX stuff?
http://ebay.us/Zwq2bm?cmpnId=5338273189
Search found 163 matches
- Fri Jul 16, 2021 6:13 pm
- Forum: SALES
- Topic: Have a bunch of stuff for sale
- Replies: 2
- Views: 2145
- Thu May 20, 2021 5:15 pm
- Forum: Hardware
- Topic: ZX81 Keyboard
- Replies: 4
- Views: 2084
Re: ZX81 Keyboard
Diode D1 and it’s connections. Also test between it’s cathode (the end with the stripe) and Z80A pin 1. And between it’s anode and the relevant pin of the eight pin keyboard ribbon connector. Mark Thanks Mark that was it. The D1 connector for the keyboard was no longer connected to the diode. I jus...
- Wed May 19, 2021 8:54 pm
- Forum: Hardware
- Topic: ZX81 Keyboard
- Replies: 4
- Views: 2084
- Wed May 19, 2021 8:02 pm
- Forum: Hardware
- Topic: ZX81 Keyboard
- Replies: 4
- Views: 2084
ZX81 Keyboard
HI all - I have a perplexing issue, at least to me. I have a ZX81 where the keys 1 - 5 are not working. I pulled it apart, trimmed the membrane etc and they still don't work. If I use my multimeter I can tell that they are working though. With cover off and no power I touch the row and column solder...
- Sun Apr 18, 2021 7:49 pm
- Forum: Hardware
- Topic: TS 1000 Composite Mod
- Replies: 3
- Views: 2159
TS 1000 Composite Mod
HI All - I'm stumped on what could be causing my issue. I am trying to add composite out to the TS 1000 basically following this https://www.classic-computers.org.nz/blog/2016-01-03-composite-video-for-zx81.htm And this https://www.bytedelight.com/?page_id=3560 I am using the correct transistor (2N3...
- Thu Apr 01, 2021 3:04 pm
- Forum: WANTED
- Topic: Memotech 16K
- Replies: 2
- Views: 5566
Memotech 16K
HI All does anyone have the manual for the 16k memotech memopak?
Bill H
Bill H
- Fri Jan 29, 2021 9:34 pm
- Forum: Emulators
- Topic: A new ZX81 Emulator
- Replies: 14
- Views: 16224
Re: A new ZX81 Emulator
Hi all - I am back to working on this, its going along nicely but I am stumped. After I load a .P file to the proper location in memory (along with all the correct system variables) where should I jump into the ROM? I am only making use of the "NAME" routine to get the name they passed in LOAD " " ...
- Fri Jan 29, 2021 9:20 pm
- Forum: Emulators
- Topic: A new ZX81 Emulator
- Replies: 14
- Views: 16224
Re: A new ZX81 Emulator
Hi all - I am back to working on this, its going along nicely but I am stumped. After I load a .P file to the proper location in memory (along with all the correct system variables) where should I jump into the ROM? I am only making use of the "NAME" routine to get the name they passed in LOAD " " t...
- Thu Feb 27, 2020 3:13 pm
- Forum: Emulators
- Topic: A new ZX81 Emulator
- Replies: 14
- Views: 16224
Re: A new ZX81 Emulator
Ok so I have the keyboard working great as long as I wait for a key on the Adam. I am not sure what col / row I should return if no key is pressed. I see it starts out with H = FFh and L = FFh and I tried to return that is there is no key press but the ZX81 doesn't like it. Any tips on this? Edit: I...
- Tue Feb 25, 2020 11:40 pm
- Forum: Emulators
- Topic: A new ZX81 Emulator
- Replies: 14
- Views: 16224
Re: A new ZX81 Emulator
Problems you might get 1) ROM-bug. Can you protect #0000-#1FFF against writing? If not, first addresses will be overwritten. 2) Reading IN-port (result can be different from machine you run or ZX81. Can be fixed with a scan and RST. 3) My games with "hidden" data on screen, can be emulated with cor...