Search found 2079 matches
- Fri Mar 08, 2024 1:42 pm
- Forum: Hardware
- Topic: RAM speed issue
- Replies: 29
- Views: 1723
Re: RAM speed issue
This game is the first to use executable code in upper memory, but that should not be the problem
- Fri Mar 08, 2024 5:41 am
- Forum: Development
- Topic: ZX81, Alternate Register Pair HL' Used By System?
- Replies: 9
- Views: 2635
Re: ZX81, Alternate Register Pair HL' Used By System?
I think it interesting that this detail is conspicuously missing from the ZX81 User Manual, especially when it addresses which registers not to mess with. It doesn't seem like such a minor detail to me. The manual also doesn't mention the use of IX or A' which you can only use in a special way. IX ...
- Thu Mar 07, 2024 6:23 pm
- Forum: Development
- Topic: ZX81, Alternate Register Pair HL' Used By System?
- Replies: 9
- Views: 2635
Re: ZX81, Alternate Register Pair HL' Used By System?
Wow.... a 2015 thread revived!stroebeljc wrote: ↑Thu Mar 07, 2024 6:04 pm HL' is used by the FP calculator when machine code is launched using USR in BASIC. So you need to do what dr beep says and save-and-restore it.
Well if it helps anyone, why not!
- Thu Mar 07, 2024 1:32 pm
- Forum: Development
- Topic: PACMAN 1K
- Replies: 27
- Views: 5307
Re: PACMAN 1K
Latest version now gives a bonuslife every 10.000 points.
- Wed Mar 06, 2024 10:26 pm
- Forum: GAMES
- Topic: New ZX81 Games
- Replies: 381
- Views: 696539
Re: New 1K Games : K-MAN (free edition)
Name of Software: K-MAN Author: Johan "Dr Beep" Koelman Release Date: 06/03/2024 Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 1K lowres Commercial / Public Domain / Free ware / Other - please specify? Freeware Description: 1K pacman NOW WITH BONUS LIVE EACH 10.000 points Downloadlink: K-man-b...
- Mon Mar 04, 2024 1:43 pm
- Forum: Development
- Topic: PACMAN 1K
- Replies: 27
- Views: 5307
- Thu Feb 29, 2024 10:44 pm
- Forum: ZX BASIC
- Topic: multi-statement in zx81 basic?
- Replies: 5
- Views: 637
- Thu Feb 29, 2024 6:45 pm
- Forum: GAMES
- Topic: What's happened to revival studios?
- Replies: 7
- Views: 908
- Thu Feb 29, 2024 4:27 pm
- Forum: GAMES
- Topic: What's happened to revival studios?
- Replies: 7
- Views: 908
Re: What's happened to revival studios?
If you have DISCORD you could contact SUPEROGUE, That is him!
- Wed Feb 28, 2024 9:42 pm
- Forum: Spectrum BASIC
- Topic: Does the zx spectrum have a fill command?
- Replies: 6
- Views: 1492