Search found 1911 matches
- Mon Jan 08, 2024 3:32 pm
- Forum: Emulators
- Topic: sz81 emulator
- Replies: 49
- Views: 42788
Re: sz81 emulator
I thought the SZ81's homepage was here: https://www.weggetjes.nl/sz81/
- Thu Jan 04, 2024 10:13 am
- Forum: SALES
- Topic: Lambda 8300 on eBay
- Replies: 11
- Views: 10552
Re: Lambda 8300 on eBay
I just saw a cheap Lambda 8300 for sale on eBay, so I thought to share. This sale is not connected to me. Just sharing.
https://www.ebay.de/itm/315071989986
https://www.ebay.de/itm/315071989986
- Wed Jan 03, 2024 2:41 pm
- Forum: Hardware
- Topic: First zeddy boots but....
- Replies: 19
- Views: 2522
Re: First zeddy boots but....
My "model" program contains a routine called FLASHOUT, which copies in its entirety the normal 16-32K program area to the higher one. Why? : A NEW command does not clear the upper memory area. So if, while working on a still dangerous program, I FLASHOUT the code and the computer subsequently crash...
- Tue Jan 02, 2024 5:15 am
- Forum: Sinclair Misc
- Topic: ZXpand curiosity.
- Replies: 6
- Views: 1572
- Mon Jan 01, 2024 7:36 pm
- Forum: GAMES
- Topic: The comp.sys.sinclair Crap Games Competition 2024
- Replies: 8
- Views: 4010
Re: The comp.sys.sinclair Crap Games Competition 2024
Great to see a new game for the Lambda 8300!
- Mon Jan 01, 2024 7:31 pm
- Forum: GAMES
- Topic: The comp.sys.sinclair Crap Games Competition 2024
- Replies: 8
- Views: 4010
Re: The comp.sys.sinclair Crap Games Competition 2024
You can also use the online emulator JSzeddy, that supports both old and new ROM of Lambda 8300.
Know that this game is only working on the new rom for Lambda 8300.
Know that this game is only working on the new rom for Lambda 8300.
- Mon Dec 25, 2023 10:28 pm
- Forum: Hardware
- Topic: Nominal video output signal on ULA pin 16 ZX81 rev 1?
- Replies: 15
- Views: 1568
Re: Nominal video output signal on ULA pin 16 ZX81 rev 1?
From what I've seen online the sync signal should not be 0v. It’s because the ZX81 does not follow the composite standard. It sends a signal where the difference from bottom of signal to top of signal is ok. Old TVs think this is ok. It does this to avoid making a more complex circuit that sends ne...
- Sun Dec 24, 2023 4:50 pm
- Forum: Hardware
- Topic: Zeddy white screen after memory upgrade
- Replies: 17
- Views: 1805
Re: Zeddy white screen after memory upgrade
This issue around the holidays, is what we call: White Christmas.
- Sun Dec 24, 2023 10:58 am
- Forum: Hardware
- Topic: First zeddy boots but....
- Replies: 19
- Views: 2522
Re: First zeddy boots but....
Why not go full 64k with battery backed up RAM? It’s even possible to replace ROM area with RAM, so you can load your own custom ROMs.
https://web.archive.org/web/20210224003 ... mories.htm
https://web.archive.org/web/20210224003 ... mories.htm
- Sun Dec 24, 2023 10:35 am
- Forum: Hardware
- Topic: First zeddy boots but....
- Replies: 19
- Views: 2522
Re: First zeddy boots but....
If you don’t want to soldier you can get this modern external RAM board:
https://www.ebay.co.uk/itm/116017640518
https://www.ebay.co.uk/itm/116017640518