On Feb 25, 2021, at 1:43 PM, Chris Zach via cctalk
<cctalk at classiccmp.org> wrote:
Oh this is fun stuff. Is there a specification write-up anywhere on the MASSBUS overall?
For example I wonder if the RH70 could do a transfer >128kb at a time. ...
I don't know the answer to most of your questions, but this one is easy:
"no". The reason is that the transfer is controlled by a 16 bit word count
register.
paul