6 Dec
2015
6 Dec
'15
9:27 a.m.
On Friday, December 4th, 2015 at 11:41 A.M. GMT (6:41
A.M. EST) Rod
Smallwood wrote:
Hello All
Well I managed to find some suitable rubber tubing and
glued it in place of the nasty black mess.
So I put everything back and turned on. Lo and Behold LED on the board
flashed once and stayed on.
I had been told (Tony D I think) thats what its supposed to do.
Anybody know whats the quickest way to test a TU-58?
As expected, my approach will always be based on using RT-11.
There are DD(X).SYS device drivers available up to V05.04G
of RT-11. If you are able to boot one of those versions and
you manage to connect the null-modem cable between the
DL and the TU-58, you should be able to read and write
to the TU-58 device.
If you don't have a cabinet kit, then use whatever is needed
at both ends. If your cable is 10-pin at each end, then
disconnect the 10-pin cable to the cabinet kit for that DL
port and connect the cable directly to the DLV11-J.
Note that under RT11XM, I believe
it is necessary to first LOAD the DDX device handler as in:
LOAD DD:
In addition, even before that, you must match the CSR and
VECTOR with the DL port you are using. On a Qbus
system with a DLV11-J, usually the first DL port is:
SET DD CSR=176500
SET DD VECTOR=300
On a PDP-11/23, there is an extra port at:
SET DD CSR=177570
SET DD VECTOR=70
if I remember correctly.
With a Unibus system, I am not sure, but the values will be
similar.
Let us know what happens. Don't forget that the TU58 is
a very slow serial tape device, not a disk drive even though
the RT-11 software thinks that there is a small disk drive
being used.
Jerome Fine