On Wednesday, 3 June 2020 20:22:15 UTC+10, DeathAdderSF wrote:
> The MP4 is resized and compressed just a tad, but that doesn't have any effect on the legibility. With some patience, you may be able to find what you're looking for.
Has this really never been properly explored yet? It seems this device has been in very capable hands before, so I find it kinda hard to believe.
Anyway I had a quick look. The only OCR software I had handy (Copyfish Chrome plugin) didn't work well, even set to the alphanumeric option. Possibly it's the low quality video at an angle, but I'm no OCR expert.
The ROM starts with Applesoft ... and ends with the enhanced //e ROM vectors.
I wonder what's at C100.CFFF, because if there's code to use the parallel port etc then that might be useful. The easiest thing I can think of is to get better quality video - don't hold the camera, use a stand or something - but disassemble that range so we can at least guess what it is.
For instance, if we set up the Ctrl-Y vector with:
3F8:4C 00 03
And put this program here:
300:20 61 FE A9 FF 20 A8 FC 4C 00 03
That will continue disassembling from the last list command, pausing briefly for each page.
You can stop the video when it gets to D000, or do the whole ROM to FFFF if you like. ; - )