On 2017-03-06 14:39, Tim Stark wrote:
I reviewed HSC50/70 tech docs. Yeah. They are PDP-11 machines. HSC50 uses
TU58 and is F11 processor. HSC70 uses floppy drive and is J11 processor.
They uses SDI and STI devices through two Qbus registers with MSCP/TMSCP
packets.
I am interested to get copies of floppy and tape images for loading software.
I have not find HSC90 tech docs yet.
The HSC90 is pretty similar to the HSC70. I would have to go and check
more documentation, but I think the HSC70 was upgradeable to a HSC90.
I think the HSC90 had much more cache memory, but they both certainly
use the J11, and the same modules for SDI and STI, along with the CI.
The HSC90 can have more ports though. But there is not a whole lot of
difference.
Johnny
Thanks,
Tim
-----Original Message-----
From: Simh [mailto:simh-boun...@trailing-edge.com] On Behalf Of Anders Magnusson
Sent: Monday, March 6, 2017 7:33 AM
To: Johnny Billquist <b...@softjar.se>; simh@trailing-edge.com
Subject: Re: [Simh] CI750 tech docs and VAX firmware
Den 2017-03-06 kl. 11:27, skrev Johnny Billquist:
On 2017-03-06 09:51, Anders Magnusson wrote:
Den 2017-03-05 kl. 14:06, skrev Tim Stark:
Folks,
I discovered CI750 tech docs when I searched for some CPU processors
for VAX emulation. I downloaded and reviewed it. CI emulation can
be implemented for emulator to link to other VAX/Alpha emulators as
VMScluster. Does anyone find CI780 emulation for VAX-11/780 and VAX
86x0 yet? Also I found HSC 50/70 tech docs but do not have software
at this time.
Hm, there is a small chance that I may have the HSC50 Cronic floppies
somewhere, is that what you are thinking about?
Heh. If it's for the HSC50, it will be DECtape II.
We might still have a set around at Update, but it's been years since
I saw them, and we don't have any HSC50 anymore. We still have a HSC90
though, with the floppy.
Oh, of course! Hm, it must be for a 70 (or 90) then. Sorry :-)
-- R
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--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: b...@softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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