Search found 1389 matches

by mrtinb
Fri Jun 11, 2021 11:08 pm
Forum: Software
Topic: FIF. Another FORTH.
Replies: 155
Views: 12516

Re: FIF. Another FORTH.

Two first words in my collection.

Image
by mrtinb
Fri Jun 11, 2021 1:29 pm
Forum: Development
Topic: Let's talk about Hi-Res truth and myths, I'm angry.
Replies: 2
Views: 215

Re: Let's talk about Hi-Res truth and myths, I'm angry.

On the same home page, you can find the Celebration Demo. On this page your can download the Lightning Pseudo Hires Driver Source. With this source you can use many of the same tricks from the games. Try it out.
by mrtinb
Mon Jun 07, 2021 7:33 am
Forum: ZX BASIC
Topic: Can't make anything fit into 1K... or is it me?
Replies: 26
Views: 2669

Re: Can't make anything fit into 1K... or is it me?

Andre wrote: Mon Jun 07, 2021 4:17 am ANDRE***
Great to see you back at the forum. I personally love ZX91 magazines you’ve created.
by mrtinb
Mon May 31, 2021 9:11 pm
Forum: Hardware
Topic: Help on MIC-Output ZX81
Replies: 20
Views: 1312

Re: Help on MIC-Output ZX81

Sorry I haven’t followed this thread. Big delivery at work. I haven’t made any special hardware to load files. I simply have a home made TZXduino, which standard firmware outputs 0V or 5V on a pin. This is fed directly into the EAR of ZX81. If you measure this on playback you’ll get the average 2.5V...
by mrtinb
Sun May 30, 2021 10:22 pm
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 565

Re: Writing data files

You don’t need GOTO 100, to restart, as the program will continue where it left off.
by mrtinb
Sun May 30, 2021 1:55 pm
Forum: ZX BASIC
Topic: Writing data files
Replies: 6
Views: 565

Re: Writing data files

ZX81 does not support data files. But if you SAVE within a program, the state of the variables and program position is saved as well. When the program is loaded, the program continues, where it left off. Third party hardware might support saving any memory location to a file. Like ZXpand, ZXblast, ...
by mrtinb
Sat May 29, 2021 4:47 pm
Forum: Software
Topic: FIF. Another FORTH.
Replies: 155
Views: 12516

Re: FIF. Another FORTH.

Maybe if it's always page $15, that is giving the error, you can post SCR15.F, and Alan can see what gets corrupted?
by mrtinb
Thu May 27, 2021 9:59 pm
Forum: Software
Topic: FIF. Another FORTH.
Replies: 155
Views: 12516

Re: FIF. Another FORTH.

I’m glad you reread my question, because this was exactly an answer to my question. The “monitor” is a cheap B/W TV with no composite input, the signal is via the antenna socket. (Currently I’m working on building a ZX81 into a small French Minitel terminal. You can read a little about it on another...
by mrtinb
Wed May 26, 2021 10:35 pm
Forum: Software
Topic: FIF. Another FORTH.
Replies: 155
Views: 12516

Re: FIF. Another FORTH.

Had a little play with the UDG version tonight. The UDG4ZXpand is below the keyboard controller. A little question though. If I want to add new words with machine code, could you describe how to pass arguments. Are you just using the stack, or is top of stack a register, and which registers should b...
by mrtinb
Thu May 20, 2021 10:45 am
Forum: Software
Topic: FIF. Another FORTH.
Replies: 155
Views: 12516

Re: FIF. Another FORTH.

I ask, because I have both ZXpand+ and UDG4ZXpand. But I don't have Chroma 81.

Great work by the way.