Sinclair ZX80 / ZX81 / Z88 Forums

Many links on http://rullf2.xs4all.nl/sg/zx81ce.html don't work now, e.g.
http://rullf2.xs4all.nl:81/zce/zce.php
http://www.dunnington.u-net.com/public/startrek/

As I understand it you must make the part of RAM from 8 to 16 KB readonly in the EightyOne emulator. Is this because SPONZY overwrites it? Could one change the ROM so that it doesn't overwrite the RAM? I have a real ZX81 with 56 KB RAM and 8 KB RAM in the ordinary ROM address space that can be fille...

The pdf-file with "Sinclair ZX81 Software Catalogue" has disappeared from the Internet. Could someone upload it again? please.

I found an emulator for AY-3-8910 using an ATmega8: http://youtu.be/iarcYHJ6uFI . Link to the blogg is also in YouTube About. I have a "William Stuart Systems Input/Output Port and Music Synthesiser for ZX81 and Spectrum" connected to my ZX81 and that uses AY-3-8910, see page 7 in http://df.lth.se.o...

kumbah wrote:Can you please try converting this one, too?

https://play.google.com/store/apps/deta ... o.xpectrum

The apk can be downloaded from here:
http://code.google.com/p/xpectrum/downloads/list

Perhaps you could routinely encode all REM statements which contain non-alphanumerics as hex streams. It would be neater, maybe. Forget XML. Just my 2€ worth. I agree to that XML would not be very suitable for Github since one wants the files in an easily editable text-format. One could have REM:s ...

I have made a Github-repository for my ZX81-programs: https://github.com/mobluse/zx81-mob Since Github prefers text-files I converted them to ZXText2P-format using a modified version of p2txt that is also in the same repository. There are also some ported programs from More BASIC Computer Games edit...

Here is a quick and dirty Program cleaner. What it does it remove any unused line numbers and line numbers that are needed are converted to labels for use with zxtext2p usage: zxclean source_file destination_file [indent value] This is just an exe-file for Windows or MSDOS. Could you publish the so...

I've compiled zxtext2p and zx81list for Linux. I put them in /usr/local/bin and can run them from any directory. Does zx81list convert to code readable by zxtext2p? Does zx81list use the same three-character strings for the ZX81 graphics characters as zxtext2p uses? Did your zx81list come from here...

Just to be sure - did you set the memory of sz81 to 56k (With 16k -the default - it gives blank screens)? No, now when I configured 56k in the GUI it worked with WRX on RasPi! The Makefile.z81 doesn't compile to executable files: z80.c: In function 'mainloop': z80.c:254: error: 'sdl_emulator' undec...