19 Mar
2012
19 Mar
'12
11:18 p.m.
On Mar 18, 2012, at 6:02 PM, Fred Cisin wrote:
On Sun, 18 Mar 2012, Chuck Guzis wrote:
I suspect the 286's A20 "oopsie" was due to someone writing
"0-20"
in a highlevel spec somewhere instead of "0-19". Caused no end of
grief, and IBM's workaround was a pretty gross hack at best.
- Dave
The problem with the 765 core and 128 byte MFM is
that the whole
sector doesn't get transferred--only the first 80 (decimal) bytes.
I can't help speculating whether that could be something as ridiculously
improbably simple as an engineer using too high-level a tool, and leaving
off the 'h' in "80h"