13 Oct
2013
13 Oct
'13
10 a.m.
One day I'll learn to type; till then I will just apologise from time to time for
sending half composed messages (and using a rubbish email client). Sorry!
-- Vax 1000 BA-23
Note that it's possible (probable?) that this is an rtVAX 1000, with a KA620 CPU
board, and possibly no mass storage in the BA23.
The KA620 is closely related to the KA630 (MicroVAX II) with one small but significant
difference.
The rtVAX family (not to be confusbed with the ftVAX) were sold to run DEC's
distributed realtime OS, VAXELN, which could be network booted (or boot from disk). Some
rtVAXes had slightly cut down memory management relative to ordinary VAXes, a
"feature" which meant they'd never run VMS.
Some folk won't mind the distinction, others might.
VAXELN is an interesting piece of software in its own right but doesn't seem to be in
the VMS Hobbyist program.
Regards
John
13 Oct
13 Oct
10:13 a.m.
On Sun, 13 Oct 2013, John Wallace wrote:
One day I'll learn to type; till then I will just
apologise from time to time for sending half composed messages (and using a rubbish email
client). Sorry!
It then fits in to the category of "very interesting". ;)
-- Vax 1000 BA-23
Note that it's possible (probable?) that this is an rtVAX 1000, with a KA620 CPU
board, and possibly no mass storage in the BA23.
The KA620 is closely related to the KA630 (MicroVAX
II) with one small but significant difference.
The rtVAX family (not to be confusbed with the ftVAX) were sold to run DEC's
distributed realtime OS, VAXELN, which could be network booted (or boot from disk). Some
rtVAXes had slightly cut down memory management relative to ordinary VAXes, a
"feature" which meant they'd never run VMS.
VAXELN is on my "list of things to play with". Still, a BA23 is a QBus
enclosure...I can probably convince someone to give up a processor for it
if I don't like the rtVAX. ;)
NetBSD seems to also have some /posible/ rtVAX support.
Some folk won't mind the distinction, others
might.
I'm fond of "the weirder, the better" ;)
VAXELN is an interesting piece of software in its own
right but doesn't seem to be in the VMS Hobbyist program.
Yeah. ;(
Regards
John
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
10:28 a.m.
On Oct 13, 2013, at 1:13 PM, Cory Smelosky <b4 at gewt.net> wrote:
On Sun, 13 Oct 2013, John Wallace wrote:
You could also look into MicroPower/Pascal.
"Distributed"? Perhaps, in the sense that there exists DECnet/ELN if I remember
right. (End node only, probably. The LPS40 uses this, I think.)
The KA620 is closely related to the KA630
(MicroVAX II) with one small but significant difference.
The rtVAX family (not to be confusbed with the ftVAX) were sold to run DEC's
distributed realtime OS, VAXELN, which could be network booted (or boot from disk). Some
rtVAXes had slightly cut down memory management relative to ordinary VAXes, a
"feature" which meant they'd never run VMS.
VAXELN is on my "list of things to play with". Still, a BA23 is a QBus
enclosure...I can probably convince someone to give up a processor for it if I don't
like the rtVAX. ;)
NetBSD seems to also have some /posible/ rtVAX support.
I've run NetBSD on VAX (in SIMH). It does basic things but it needs work, partly
because gcc has some code generation bugs.
paul
10:30 a.m.
On Sun, 13 Oct 2013, Paul Koning wrote:
I can believe that, too. I'm not too fond of GCC. ;)
On Oct 13, 2013, at 1:13 PM, Cory Smelosky <b4 at gewt.net> wrote:
Hmmmm. First comes actually GETTING the BA23. ;)
On Sun, 13 Oct 2013, John Wallace wrote:
You could also look into MicroPower/Pascal.
The KA620 is closely related to the KA630
(MicroVAX II) with one small but significant difference.
The rtVAX family (not to be confusbed with the ftVAX) were sold to run DEC's
distributed realtime OS, VAXELN, which could be network booted (or boot from disk). Some
rtVAXes had slightly cut down memory management relative to ordinary VAXes, a
"feature" which meant they'd never run VMS.
VAXELN is on my "list of things to play with". Still, a BA23 is a QBus
enclosure...I can probably convince someone to give up a processor for it if I don't
like the rtVAX. ;) "Distributed"? Perhaps, in the sense that
there exists DECnet/ELN if I remember right. (End node only, probably. The LPS40 uses
this, I think.)
I can believe it being endnode only.
NetBSD seems to also have some /posible/ rtVAX support.
I've run NetBSD on VAX (in SIMH). It does basic things but it needs work, partly
because gcc has some code generation bugs.
paul
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects
11:47 a.m.
New subject: NetBSD/vax & gcc - was Re: cctalk Digest, Vol 122, Issue 20 - Re: Barrys collection - the free stuff
On 13/10/13 1:30 PM, Cory Smelosky wrote:
On Sun, 13 Oct 2013, Paul Koning wrote:
I run NetBSD 1.4.1 on a real MicroVAX II. Can't guarantee it's free of
bugs, but egcs on that system seems to work pretty well. Biggest thing I
built with it so far was Apache 1.3.x.
VAX-11 was one of the earliest supported architectures for gcc, if I
remember my history aright.
--Toby
On Oct 13, 2013, at 1:13 PM, Cory Smelosky <b4 at gewt.net> wrote:
I can believe that, too. I'm not too fond of GCC. ;) On Sun, 13 Oct 2013, John Wallace wrote:
...
NetBSD seems to also have some /posible/ rtVAX support.
I've run NetBSD on VAX (in SIMH). It does basic things but it needs
work, partly because gcc has some code generation bugs.
paul
6:47 p.m.
[...] rtVAX
1000, with a KA620 CPU board, [...]
It then fits in to the category of "very
interesting". ;) > The KA620 is closely related to the KA630
(MicroVAX II) with one small but $
Yes. P0 and P1 page tables are in physical space instead of kernel
virtual space. (That is, P0BR andf P1BR contain physical addresses,
and P0/P1 PTE access goes to physical memory, rather than kernel
virtual.) Relatively minor, but enough to ensure VMS wouldn't run on
it, which as I understand it was what DEC cared about at the time.
NetBSD seems to also have some /posible/ rtVAX
support.
I can't imagine it'd be all _that_ hard to tweak the VAX pmap as needed
for the KA620. Of course, that's coming from someone who's never tried
it, so it's pure speculation and probably worth what you paid for it.
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