Ethan Dicks wrote:
On Sun, Mar 02,
2008 at 07:18:51AM -0800, Bob Armstrong wrote:
All true, although it might not be as bad as it
sounds. There are a lot
of people on this list, and some of them used old DEC computers and
operating systems. Some of them might already know how to write a driver
for one of these OSes - get a group of them together and you'll have all the
old OSes covered.
True, but there are a lot of dusty neurons to polish before much progress
could be made. I haven't written a device driver for DEC hardware in
over 15 years (I've worked on Ultrix, and VMS 4.x and VMS 5.x, myself).
Jerome Fine replies:
As I just stated, I am up and running for an RT-11 version of any device
driver.
... the first
thing you should do is
hack up simh to include emulation of your proposed new "RQATA" interface
card; then you could start writing drivers before the hardware was even
done, and simh is a great tool for debugging the driver software.
That's an excellent suggestion (and I say that having helped Bob Supnik
debug one of _his_ drivers long ago).
The suggestion I made was to include john Wilson's HD: device drive in
SIMH. Since I
already have produced most of the RT-11 device drivers that would be
needed, an HD: in
SIMH would be off and running immediately. Is anyone here capable of
writing the
HD: code for SIMH? I guess that if I had some help, the way to go would
be to modify
the RK05 or the RL02 emulation.
By the way, does SIMH allow for an equivalent to the RAM: device that
Ersatz-11 uses:
MOUNT DU0: RAM: /SIZE:65536 - which provides a 65536 block RAM: disk
Sincerely yours,
Jerome Fine
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