I was 14 years old, with my ZX81, and Toni Baker. You learned just how fast that CPU could go (compared to interpreted BASIC.) So compact, so fast, so picky :). Typing in those REM statements as a hack to getting machine code staged. Lead me to later writing many assemblers for Intel processors. Toni is remembered positively by uncountable people. Thank you for posting this.
It was the same book I used to learn machine code on, it was white though with red text, still have it, maybe an earlier or later edition, same as you, fantastic book, changed my life too, I would not have the job I have today without it
That book was magically for me when I was a kid. A second hidden language got me fully into computers back then. I eventually wrote an assembler which I'll show in a week or two.
Have you recorded the cassette to a computer as digital audio yet? It might be easier to edit the audio file to get a recoverable program, and it would be a good backstop, each time you put that cassette into a new deck there's a risk of the tape breaking or getting demagnetized or otherwise worn.
Yup, done that a bunch of times. Audacity is a good tool for editing and you can basically see the bad sections and cut/paste good parts in place of them...it's basically long and sort pulses so you just need a clean one of each and paste over the bad...it doesn't have to align fully time-wise either.
I was 14 years old, with my ZX81, and Toni Baker. You learned just how fast that CPU could go (compared to interpreted BASIC.) So compact, so fast, so picky :). Typing in those REM statements as a hack to getting machine code staged. Lead me to later writing many assemblers for Intel processors. Toni is remembered positively by uncountable people.
Thank you for posting this.
It's a great book, thanks for sharing😀
It was the same book I used to learn machine code on, it was white though with red text, still have it, maybe an earlier or later edition, same as you, fantastic book, changed my life too, I would not have the job I have today without it
Oh cool....definitely a life-changing book. The 80s was a good time 🙂
Fantastic stuff, and hooray for Toni Baker. She really knew her stuff!
That book was magically for me when I was a kid. A second hidden language got me fully into computers back then. I eventually wrote an assembler which I'll show in a week or two.
Have you recorded the cassette to a computer as digital audio yet? It might be easier to edit the audio file to get a recoverable program, and it would be a good backstop, each time you put that cassette into a new deck there's a risk of the tape breaking or getting demagnetized or otherwise worn.
Yup, done that a bunch of times. Audacity is a good tool for editing and you can basically see the bad sections and cut/paste good parts in place of them...it's basically long and sort pulses so you just need a clean one of each and paste over the bad...it doesn't have to align fully time-wise either.
I think the old ROM is the for zx80 but not sure
Oh cool...I'll try and verify that.