As far as i know, winchester drive selects have always been 1-4, at
least in the DEC world!
Reference MP-02259-01 RQDX3 Field Maintenance print set. Also Plessey
DCV54 manual.
I don't know about PCs- I went into teaching when the PC came out 'cos
there wasn't enough money in PCs! I was getting $90 and hour in the DEC
world and people were working for $20-30 in the PC world :-(
Nigel
On 2023-08-12 19:59, Fred Cisin via cctalk wrote:
On August 12, 2023 6:35:35 p.m. EDT, Peter Coghlan via cctalk
<[email protected]> wrote:
IIRC I had to jumper the second MFM drive as drive 4. Presumably I
should
have made a twist in the cable to allow the second MFM drive to be
configured
as drive 3, the same as the first drive.
On Sat, 12 Aug 2023, Nigel Johnson via cctalk wrote:
From memory, when I looked into doing this I found that the RQDX3
BA23 distribution panel maps DS2 from the contriller to all DS pins
on the B cable of one drive and DS3 to all DS lines on the other. I
never did test the theory though. I did not get a special adapter
from decromancer.
Hope it helps
Could y'all clarify for me,
Do you mean "drive 3" and "drive 4" of drives 1-4, or 0-3?
do you mean "DS2" and "DS3" of DS0-DS3, or DS1-DS4?
--
Grumpy Ol' Fred [email protected]
--
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
