[pups] How to arrange bootable media for 2.11BSD?
Martijn van Buul
pino at dohd.org
Wed Oct 11 04:36:31 AEST 2000
*whoops*.
I've been mailing personal replies, instead of replies to the list. Too much
relying on procmail, I suppose.
Steven M. Schultz wrote:
> It is an 11/53 or better (73, 83, 93)? There were numerous "MicroPDP"
> systems made but some of them were 11/23 or 23+ and those will not
> run 2.11BSD
It's a 11/53+ (aka: 1.5 MB RAM), which *should* be able to run 2.11BSD.
> What OS did you manage to get Kermit running under?
Micro/RSX
> I do not believe Kermit itself can handle the multiple block sizes used
> when writing the files that make up the "boot tape". Do you have any
> development facilities on the currently running system? If so then it
> might be possible to write a program to create a tape from the files
> brought over via kermit.
There is a Macro-assembler, and reportedly a PASCAL compiler. However, my
Micro/RSX skills (let alone -programming skills) should be considered
rudimentary - the only resource I have is the on-line helpfile (which isn't
very clear every now and then).
> If you've a PC with a 5.25" drive and the ability to do image copies
> to it ('dd' on a *BSD* or Linux system) that might be one way to
> get 2.11 over to the MicroPDP. A single RX33 can easily hold the
> standalone programs (boot, disklabel, restore, mkfs, icheck) and
> it only takes 3 or 4 RX33 disks to hold a root filesystem dump.
The "RX33" is working (that's how I was able to low-level format two
MFM disks, and how I got Kermit running). And yes, I have a Minix-VMD box
with a 5.25" HD drive.
For the sake of completeness, I'll include the currently available
hardware:
KJD11-D/S (processor), DZQ11, TK50, RQDX3 with one RD32A, a third-party
21MB MFM disk (ST225, RD33? 31? Something like that), a second 21MB
MFM disk standing by (A microscribe of some sort), a 5.25" PC floppy
drive shoe-horned into a RX33, and a DELQA card.
(Well, that's what I have installed right now. I do have some other cards,
including a DRV11-J "Hi-density parallell line unit" and some strange
VG-Electronics cards (which they claim are specific to surface analysis))
And a spare TK50 mechanic..
--
Martijn van Buul - Pino at dohd.org - http://www.stack.nl/~martijnb/
Geek code: G-- - Visit OuterSpace: mud.stack.nl 3333
Kees J. Bot: The sum of CPU power and user brain power is a constant.
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