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 😉

実戦派!! Z80アセンブリ言語入門
https://qiita.com/suzukiplan/items/343a93e9f30e51af110e?utm_campaign=popular_items&utm_medium=feed&utm_source=popular_items

#qiita #Z80 #アセンブリ言語 #マシン語 #VGSZero #z80asm

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

Spent several hours working the kinks out of my #amstradcpc Plus/GX4000 multidirectional scrolling code last night. Finally got it working without glitches (visible updates around the left/right will be hidden eventually, currently visible for debugging). Vertical scrolling is much more difficult than horizontal... Aiming to keep things at 50Hz.

There's a strange satisfaction from on-board #z80asm coding 🙂 #retrocomputing #z80