02-24-2022, 11:21 PM
02-28-2022, 10:52 AM
Nice find. Most of those hacks might work with the whole family - 501, 502, 601, 602. Those are very, very nice calculators, too.
02-28-2022, 04:51 PM
The board works with the 501 and 502. The 601/602 uses the same interface hardware but a slightly different command set. This is a bit odd as they both talk to the same peripherals. My 502s are more reliable than my 602s and so I developed the code on them. I'll probably have a go at getting a 602 working as well if i can keep one working long enough.
Andrew
Andrew
03-01-2022, 12:38 PM
Well, i have inherited the 602 including printer and tape interface and such from my father. it should be about 40odd years old now and still works perfectly.
i also sold another 602 a while ago which did work fine, too.
my 502 and 501 both work equally well so i cannot tell of any failures in this family.
i also sold another 602 a while ago which did work fine, too.
my 502 and 501 both work equally well so i cannot tell of any failures in this family.