[HECnet] DU11 vs. DUV11

[Johnny Billquist]

On 2013-01-06 20:35, Steve Davidson wrote:


-----Original Message-----
From: owner-hecnet at Update.UU.SE
[mailto:owner-hecnet at Update.UU.SE] On Behalf Of John Wilson
Sent: Sunday, January 06, 2013 14:29
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] DU11 vs. DUV11

From: "Lee Gleason" <lee.gleason at comcast.net>

I'm even more curious what a PDT-11 optimization is doing in an RSX
driver...was there at one time an RSX product product
planned for the
PDT family?

I've never met a PDT-11/110 in person.   The docs say they
were downline-load-only -- so what DID they run?   MRRT11?
RSX11S would certainly make sense.   Also, DEC dumped a lot of
the PDTs to their own employees, so maybe someone made a few
tweaks to the RSX code for their own evil purposes at home.

John Wilson
D Bit


The main target for the PDT-11 was RT-11.   It was slow.   The floppies
spent a great deal of time seeking.   They were the size of a small
microwave oven.   In software services we would use it to test patches to
RT-11 and some of the layered products.   I had one for a time that I
used at home over a 300 baud connection.   Tough to say whether the
dial-up or the floppies were slower... :-)

You must be talking of the PDT-11/150 then. The /110 and /130 sat inside a VT100 shell. Extremely similar to a VT103 (I actually never figured out what the difference between a VT103 and a PDT-11/130 is.)

But I figure RSX-11S would fit those machines perfectly. After boot, you wouldn't even care about how slow the floppy was. :-)

	Johnny

-- 
Johnny Billquist                                   || "I'm on a bus
                                                                  ||   on a psychedelic trip
email: bqt at softjar.se                         ||   Reading murder books
pdp is alive!                                         ||   tryin' to stay hip" - B. Idol