Search found 542 matches

by stefano
Fri Aug 25, 2023 1:09 pm
Forum: Software
Topic: ZX Spectrum 1-bit music running on ZX81
Replies: 3
Views: 5654

Re: ZX Spectrum 1-bit music running on ZX81

Follin3ch is impressive !
by stefano
Fri Aug 25, 2023 1:04 pm
Forum: Software
Topic: Campus LISP on a ZX80
Replies: 2
Views: 4468

Campus LISP on a ZX80

This is a very experimental port of the Campus LISP on a ZX80 with 16K RAM. clisp_zx80_16K.o (BEWARE this thing is buggy, I'm still trying to stabilize it furtherly, in example PROGN does not work) There's very little you can do with it, the memory gets quickly filled, the base functions are at the ...
by stefano
Fri Aug 25, 2023 12:17 pm
Forum: Software
Topic: Loading on the ZX80
Replies: 3
Views: 6060

Re: Loading on the ZX80

This is so intriguing !
by stefano
Fri Aug 25, 2023 11:01 am
Forum: Development
Topic: Using Inkeys
Replies: 23
Views: 13270

Re: Using Inkeys

100 IF INKEY$ <> "" THEN GO TO 100
110 IF INKEY$ = "" THEN GO TO 110
120 LET A=CODE INKEY$ (or LET A$=INKEY$)

On the Spectrum I used to put:
100 PAUSE 0 (or PAUSE NOT PI) to reduce the code size and be quicker in typing

I neve knew of the ZX81 bug with PAUSE !
by stefano
Thu Aug 24, 2023 10:39 pm
Forum: Development
Topic: Yet another graphics demo in WRX mode
Replies: 3
Views: 4544

Re: Yet another graphics demo in WRX mode

thank you, a picture of this thing running on a crt TV would be much appreciated ;)
by stefano
Thu Aug 24, 2023 10:37 pm
Forum: Software
Topic: ZX80 software
Replies: 7
Views: 5769

Re: ZX80 software

the ideal thing would be an old bw crt based tv set. monitors or colour tv can be troublesome the screen on the zx80 obviously flickers a lot, I could get a more stable input routine for z88dk (which I just discovered to be buggy in decoding some symbol) , but it still does bad things on a chip cont...
by stefano
Thu Aug 24, 2023 4:30 pm
Forum: Software
Topic: ZX80 software
Replies: 7
Views: 5769

Re: ZX80 software

The lack of software is easily explained, the ZX81 ROM could be put in a ZX80. In fact it was designed to work also as a "retrofit", but obviously you couldn't take benefit of the SLOW feature. Some of the existing ZX81 programs could then run on a ZX80, there were commercial program declaring they ...
by stefano
Thu Aug 24, 2023 11:57 am
Forum: Development
Topic: Yet another graphics demo in WRX mode
Replies: 3
Views: 4544

Yet another graphics demo in WRX mode

This is something I grabbed time ago from an SVG file and rendered with the graphics functions I built for z88dk. It's my favourite one because it gives the feeling of a human drawing it in the creation process. Hope I'm not duplicating something I posted already. ...the screenshot is old stuff got ...
by stefano
Sun Aug 07, 2022 3:57 pm
Forum: Development
Topic: A proposal. Just an idea.
Replies: 10
Views: 2342

Re: A proposal. Just an idea.

there's been plenty of development around the zx81, I'm discovering something everyday, also in the historical papers and old online articles. To add something which wasn't mentioned yet, think at the zx1541 interface or the MEFISDOS. https://www.sinclairzxworld.com/viewtopic.php?t=2198 https://docz...
by stefano
Mon Jul 25, 2022 5:58 pm
Forum: Development
Topic: Relocatable Machine Code
Replies: 25
Views: 5337

Re: Relocatable Machine Code

Exactly ! https://github.com/z88dk/techdocs/blob/f8dbb2f00f794219345481eea544af868c71477c/targets/zx/supercode.asm#L2470 ..While I'm mentioning SuperCode, I think that a bold programmer could try to convert some of those routines, e.g. https://github.com/z88dk/techdocs/blob/f8dbb2f00f794219345481eea...