Sinclair ZX80 / ZX81 / Z88 Forums

In the old days, some magazines had a tips section where interesting little programs were presented for the reader to type on their computer. Under this influence and aiming to demystify Forth a little, I open this topic with small fragments of code in Forth for the reader to type on their ZX81, res...

The reason for the RND and BRK word is because I originally did this for an older version of Toddy which didn't have a BREAK function and the RND I did just to learn how to manipulate words, a learning curve if you see what I mean? I know of TF79's RND function and very good it is too. :D That´s ok...

PS what was the problem with INKEY and the editor? I never had a problem with the editor I have say worked ok for me. In fact, it was the correction of the INKEY problem that affected the EDITOR, so it was necessary to change it by replacing INKEY with a direct call to the keyboard reading routine....

I saved the kernel and a changed chr$ set using 8192 8192 BSAVE >TF79.BIN but upon reloading the chr$ set still defaults to the system font not my changed font and I have to change it manually every time. COLD start with ROM characters (1E00h), to initialize with UDG characters make the following c...

Hello guys! After a long time away and motivated by this video on YouTube , I turned my attention to the TF79 and ended up discovering issues in the behavior of the words INKEY and WAIT, which motivated a new release. I also took the opportunity to correct what I now recognize was a bad decision: th...

Commander has the ability to display monochrome (1 bit) BMP files of a maximum size of 256x192 and without compression. So, save the image in that format and place it along with the .p program. Then select the BMP file and hit the NEWLINE to show the image. Note that the screenshot generated by the ...

There is the rezurction demo, it works in 1Kb:

https://www.pouet.net/prod.php?which=19210

@Moggy I have BIGBANG X2 ROM on my ZXpand classic and Andy's old ULA2 clock doubler works great as seen here.

JohnsBargs wrote: ↑Fri Aug 18, 2023 6:58 pm It's the libretro version of EightyOne. It's a pretty out-of-date version.

In old versions of EO it was CHR$16, see in EO 1.1:

Love it! Did you speed it up too, or am I imagining it? You are imaginning it, the only changes I made to the program were on lines 6070 and 9651, changing the characters [-], [>>] and [<<] for [:] and [**] respectively. Weirdly it looks totally different on a Raspberry Pi. What is the emulator? It...