#z80asm — Public Fediverse posts

playing with my masptrad CPC emulator, its been a while, so much so I absolutly forgot how to load a tape image.

in my defence,
A: I am relatively newcomer to that system
B: I've been using disk images to save code I'd written in Z80 so forgot that you had to use the |TAPE command.
C: I was tired lol

Anyway... off to refresh myseelf in how z80 assembly works.

#z80asm #amstradCPC #retroComputing

Having a break from other "rabbit holes" to return to #CPM, and I'm away from my hardware, so it's emulation only.

Got #runCPM up my laptop and had to get #Zork running. Found the eblong Infocom archive and the #Z80 the Z Interpretator source (+ Zork Z3 file).

Fixed some issues and it assembled with #z80asm but when I ran it the text display was not right. I recognised escape code issues. Dug into the Z80 code and found the problem. Hours later I found the reason.

Wyse codes, not VT100/ANSI 😉

I've now ported Sargon #Chess - the 1978 classic award-winning chess game to #AgonLight - written in 100% #z80asm. Now that it works properly, there's a bit of a roadmap of enhancements I can do. Get your #z80 #retrogaming chess fix here https://github.com/sijnstra/agon-projects/tree/main/sargon

I have found this table of the 6502 code that would be equivalent to Z80 code https://litwr2.github.io/8080-8085-z80-8088-6502/z80-6502.html

However, does anybody know of one going the opposite way? ie what Z80 code would be equivalent to 6502 code?

#z80asm #Z80 #6502asm

Got a new book.

Zx spectrum next assembly guide by tomaz kragelj. Ordered it from lulu.com and it arrived in only a few days. Which for print on demand is fast.

My heads been messed up with cold i have atm. So. Not really had a good chance to read it but with my speccy next 2 coming in the next few weeks i thought i better get ready

#zxspectrumnext #assemblylanguage #z80asm #zxspectrum

Yeah... That code to move the ties may be a little ... Buggy
#asm #z80asm #cpc464 #amstrad464

the simple joy i got today when my #z80 code ran correctly and the cpc switched to each mode in turn while printing the ascii characters from 32 to 255 in alternating paper and inks then prompting me to press a key before switching to the next mode.

I mean its so simple in non machine code, a couple of nested for loops and its done.
But the asm is just fun.
I might eventually actually be getting my head around this asm stuff.

#z80asm #cpc464 #retroprogramming

New Blog Post :: Getting Started with z80asm on the RC2014

https://www.kianryan.co.uk/2023-01-05-getting-started-with-z80asm-on-the-rc2014/

Switching a RC2014 Classic II from BASIC to SCM, setting to Z80ASM, assembling a first program, converting to Intel Hex and running on SCM.

#rc2014 #scm #z80asm #z80