25 Feb
2021
25 Feb
'21
12:27 p.m.
On 2/25/21 10:43 AM, Chris Zach via cctalk wrote:
Oh this is fun stuff. Is there a specification
write-up anywhere on the MASSBUS overall?
there is some documentation on bitsavers
the register descriptions were intentionally obfuscated to prevent cloning
that was figured out to make SIMH work
the CDC drive interface was also slightly modified for the same purpose