13 Oct
1999
13 Oct
'99
2:02 a.m.
I think our KS10 has separate ports for the massbuss marked disk and
tape, but I'd have to double check to be sure I'm not thinking of
something else.
On Wed, 13 Oct 1999, Bill Pechter wrote:
It's because of software limitations and (If I remember correctly)
disk and tape drives used different numbers of massbus registers
so you have to jumper (in the PDP11 case) the RH differently.
Don't know about the 10's though. Vax RH780's could do both disks and
tapes on the same massbus.
Bill
---
bpechter@shell.monmouth.com|pechter@pechter.dyndns.org
Three things never anger: First, the one who runs your DEC,
The one who does Field Service and the one who signs your check.
M. K. Peirce
Rhode Island Computer Museum, Inc.
215 Shady Lea Road,
North Kingstown, RI 02852
"Casta est qui nemo rogavit."
- Ovid
Chris Zach (cz(a)alembic.crystel.com) has the MIT-AI
KS10, and wants to run
ITS on it, but his tape drive (A TU77) is screwed up. It generates a
FORMATTER ERROR in the Status register whenever it's on.
He has booted from drives on the same Massbus so that's OK.
Well, you've explained one problem already. You're not supposed to put
disk drives and tape drives on the same Massbus.