Paul Rikards posted the plotted Atari 800 ROM. Visible in the details is the embedded font, which is remarkable to see in context
@cypnk what even is computers
@cypnk Woah, is this whole thing hand-drawn?
@Felthry I first wrote "most likely, yes" as a reply, but then I re-read your question :P It's been a long day already at work
I meant to say, it's most likely printed. In fact, the size is probably too large to reproduce accurately
@cypnk The unevenness of the top and bottom led me to think it may have been hand made.
@cypnk seeing that, wondering if it was handdrawn, from some of the artifacts in the low-res samples, then deciding no, definitely printed, when looking at high res.
Then wondering, 'what kind of ridic data integrity errors would handcopying something like this introduce'?
@rubah Most likely. But then I wonder about how accurately a lot of "large" programs were written in punch cards and consider that too was done by hand for the most part
in the 1980s some quite substantial hobbyist computer programs were printed in magazines to be retyped, including machine code that was store in endless DATA statements in Basic, sometimes with self modifying code that would put the data in REM statements (only a few 1980s computers had built in asemblers)
There was usually a checksum but this had to be done very carefully and the code regularly saved to cassette tape...
@vfrmedia @cypnk @rubah DOS Resource Guide magazine did stuff much like this in the early 1990s, even. Because MS-DOS batch files couldn't do things like accept keyboard input during execution, DRG printed batch files that would feed themselves to the DEBUG.COM assembler to create accessory programs.
Only the better ones had a checksum, and if you were lucky each section had its own checksum. If not, you had a very exiting time ahead of you trying to find the incorrect number.
Check out this old magazine with lots of code:
@cypnk love to find bitmaps and easter eggs in ROMs. This Atari ST firmware has the Dave StaUgas loves Bea Hablig Nu, which is apparently executable 68k code.
@cypnk It's like a Voyager spacecraft capsule in reverse.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!