11 Aug
2011
11 Aug
'11
7:04 p.m.
I just searched for RQDX1 seems there were 4 versions
http://manx.archivist.info/search.php?search=rqdx1&errlev=0&company…
371119
Digital Equipment Corporation
RQDX1-P
2B
RQDX1
P
M8639-YA,BC02D-1D,17-00285-02,17-00282,17-00286
H
Q-BUS,11/VAX
371120
Digital Equipment Corporation
RQDX1-M
2B
RQDX1
M
RQDX1 (M8639-YA) + BC02D-1D
H
610QM MICROVAX
371121
Digital Equipment Corporation
RQDX1-EP
2B
RQDX1
EP
DEC INTEGRATED RQDX1-E W/INTERNAL CABLE
H
RQDX1-E
371122
Digital Equipment Corporation
RQDX1-E
2B
RQDX1
E
ADD-ON DISK ADAPTOR FOR RD52,RD51,RX50 (M7512 + BC
H
RQDX1
more digging required
Dave Caroline
On Thu, Aug 11, 2011 at 9:53 PM, Jerome H. Fine <jhfinedp3k at compsys.to> wrote:
I just finished running ZRQB?? using two different
RQDX1
controllers. ?The drive used in each case was an RD51.
While each RD51 drive works correctly under the RQDX1
controller which was used to format the drive, each RD51
will not work with the other RQDX1 controller. ?Each RQDX1
is able to successfully use the same RX50 floppy drive.
Each RQDX1 is so old that the version of the EPROMs
can not be read. ?They look to be the same, but I don't
have an EPROM reader.
I always thought that any given M8639 YA controller
produces the same format. ?Can anyone comment? ?This
is the first time that I have ever seen an incompatibility.
Any advice would be appreciated.
Jerome Fine