Search found 1296 matches

by dr beep
Wed May 06, 2020 9:09 pm
Forum: ZX Spectrum Lounge
Topic: ZX Spectrum Next
Replies: 34
Views: 22588

Re: ZX Spectrum Next

I've been looking at what my next personal computer should be and it seems that the ZX Next will have a ZX81 mode, so that is where my money is going. I'm hoping it'll support the colour modes from this as well but perhaps that is a bit too much to ask. Regards, Shaun. @shaun_B This could be added ...
by dr beep
Wed May 06, 2020 7:13 pm
Forum: Emulators
Topic: SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum
Replies: 6
Views: 4971

Re: SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum

Version 1.03

Bug LD A,R was NOT fixed in 1.02

Added tooling to convert CHR and P file directly in 1 TAP-file
2020 SP-2-ZX81_v103.zip
(96.18 KiB) Downloaded 159 times
by dr beep
Tue May 05, 2020 8:47 pm
Forum: Emulators
Topic: SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum
Replies: 6
Views: 4971

Re: SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum

UPDATED VERSION: EDIT: VERSION 1.01 LACKED THE SPEEDFINDUPDATE, REPAIR FOLLOWED IN V1.02 Release of version 1.01 Bugfix: Bug LD A,R, my opcode source missed this opcode but some games use this as some kind of RND Convenience fix: DEBOUNCE set to 10, a bit slower as request Extra options: Added CHROM...
by dr beep
Tue May 05, 2020 10:04 am
Forum: Development
Topic: .chr files from Chroma needed for support in SP-2-ZX81
Replies: 2
Views: 1791

Re: .chr files from Chroma needed for support in SP-2-ZX81

I found room in my latest emulator to add altered characterset from chroma interface. I do need .chr files ( and the .p) from games to test and convert it. Any files available or should I skip the development? Sounds useful. A number of .chr files for games can be found here , and the game .p files...
by dr beep
Tue May 05, 2020 9:58 am
Forum: GAMES
Topic: RetroSnake is out ! New ZX81 16k Pseudo High Res game
Replies: 13
Views: 6547

Re: RetroSnake is out ! New ZX81 16k Pseudo High Res game

mrtinb wrote: Mon May 04, 2020 11:52 pm Yes Beep, but then it wouldn't be in C ;-)
Still.... you can use the screenmemory to code a redefine keys routine, only called AFTER loading and then use the memory for the screen as needed.
by dr beep
Mon May 04, 2020 9:08 am
Forum: GAMES
Topic: RetroSnake is out ! New ZX81 16k Pseudo High Res game
Replies: 13
Views: 6547

Re: RetroSnake is out ! New ZX81 16k Pseudo High Res game

It plays well on my real ZX81 as well, but no custom keys, is a pain. Sadly I had to squeeze every byte to fit in 16K, the pseudo high res display file alone consumes 6KB. What I could do is release a new version with hardcoded alternative sets of keys, i guess that could take only a few bytes. Any...
by dr beep
Mon May 04, 2020 9:02 am
Forum: Development
Topic: .chr files from Chroma needed for support in SP-2-ZX81
Replies: 2
Views: 1791

.chr files from Chroma needed for support in SP-2-ZX81

I found room in my latest emulator to add altered characterset from chroma interface.

I do need .chr files ( and the .p) from games to test and convert it.

Any files available or should I skip the development?

other positive fact; screenupdate is a bit quicker now.
by dr beep
Sun May 03, 2020 9:33 am
Forum: Emulators
Topic: Zeddy emulator for ZX Spectrum
Replies: 17
Views: 10573

Re: Zeddy emulator for ZX Spectrum

It made me think about the ZX81-emulator. I already made a new version that never was released and will never since the code is slower than the original due to contented memory. However if I alter the location of the emulator and set supporting routines in contented memory I will be able to win spe...
by dr beep
Sat May 02, 2020 10:14 pm
Forum: ZX BASIC
Topic: Hidden BASIC lines at end of program space
Replies: 11
Views: 5348

Re: Hidden BASIC lines at end of program space

This is the base model I use, even the compressed screen is in its shortest mode by placing the JP (HL) at the last NewLine ; Base model for optimal ZX81 code in lowres ; 12 bytes from #4000 to #400B free reuseble for own "variables" org #4009 ; in LOWRES more sysvar are used, but in this way the sh...
by dr beep
Sat May 02, 2020 10:05 pm
Forum: Emulators
Topic: SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum
Replies: 6
Views: 4971

SP-2-ZX81, the new ZX81-emulator for the 48K ZX Spectrum

This is the official release of my NEW ZX81 EMULATOR for the 48K ZX Spectrum.
Fully software and much faster than my emulator from 1997.
The old emulator is also included.
https://www.mediafire.com/file/oiejfzmj ... X.zip/file