For quite some time cyclic redundancy check (CRC) is a nice attempt to detect changes to digital data. Well known is the "type" CRC-32 because its widespread use by PKZIP, ZIP, 7-Zip and more. In contrast the ROMs for 41CL are listed with a "YCRC" which turns out to be "type" CRC-32/MPEG-2. This is also wide spread since used in VLC but not accessible for the average user for his own use. (BTW, I prefer the term "type", typically it's called "algorithm", but the idea behind CRC is all the same, only some parameters are varied what may result in special, maybe optimised algorithms.)
Question: Do we know any reason why Monte J. Dalrymple did not use CRC-32, so comparing ROMs would be possilbe for everybody, without an extra program?
Best,
M.