28 Apr
1999
28 Apr
'99
3:49 a.m.
same page you would use for RT-11 (its essentially
rt-11 V2). HT-11
would have to have dup, dir, resourc and a few other utilities on it do
be useful.
But such utilities didn't come along until later in RTs life.
Actually, in early versions of RT-11 (HT-11), PIP did all the
same functions which were eventually broken out into the
separate utilities DUP and DIR... Of course, since that split,
several other functions were added to each utility, and have
no analogue in V2.
And there was no RESORC, or HELP.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
28 Apr
28 Apr
5:41 a.m.
same page you would use for RT-11 (its essentially
rt-11 V2). HT-11
would have to have dup, dir, resourc and a few other utilities on it do
be useful.
But such utilities didn't come along until later in RTs life.
Actually, in early versions of RT-11 (HT-11), PIP did all the
same functions which were eventually broken out into the
separate utilities DUP and DIR... Of course, since that split,
several other functions were added to each utility, and have
no analogue in V2.
And there was no RESORC, or HELP.
Megan Gentry
Former RT-11 Developer 
8:01 a.m.
Well, when I type .DIR it says
?ILL-CMD?
and when I type .R DIR it says
?FIL-NOT-FND? (could have different vowels and consonants deleted)
When I boot the disk it also asks for a "Scratch" disk in drive 1, which is
promptly sets DX1=DK
I'll try the PIP options. As I recall from very foggy memories PIP was like
the main thing. No online docs of course and the previous owner of this H11
didn't see fit to keep them with it.
Clearly the H27 floppies are RX01 clones although they also have an
"extended" mode which may allow for double density operation.
More importantly they allow you to format disks :-)
Oh, and I tried an 11/23 CPU and it wouldn't boot, it halts out with a
173xxx address.
--Chuck
10:15 a.m.
Well, when I type .DIR it says
?ILL-CMD?
Right... no CCL or DCL...
and when I type .R DIR it says
?FIL-NOT-FND? (could have different vowels and consonants deleted)
DIR wasn't around at that time...
When I boot the disk it also asks for a
"Scratch" disk in drive 1, which
is promptly sets DX1=DK
Hmmm... I don't remember early versions of RT allowing command files.
That was something added later... *BUT*, it's possible that the
former owner made some modifications so that it does that at boot.
I remember adding CCL-like code to V2C when I was a student at
WPI back in the 70s...
Clearly the H27 floppies are RX01 clones although they
also have an
"extended" mode which may allow for double density operation.
More importantly they allow you to format disks :-)
Yep... I have a set myself...
Oh, and I tried an 11/23 CPU and it wouldn't boot,
it halts out with a
173xxx address.
Yeah, the 11/23 hadn't come along yet, so the code is pretty LSI-11/03
specific.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
9:09 p.m.
Appended below is a transcript of booting the disk marked HT-11B
Distribution and using PIP to list the directory contents.
The floppy interface generates the $ prompt. (presumably the boot loader on
a BDV11 would clash with this.)
The requirement to put in a new disk suggests that the disk is designed for
one to copy on to the new disk those things one would need in a "working"
version and the use the working copy. Unfortunately there isn't any SYSGEN
or MAKESYS or anythign that suggests this. The only other PIP incantation
I've managed that does anything useful is "TT:=DK0:[filename]" which types
the file out to the console. Trying DK1:=DK0:*.* doesn't have the expected
effect of copying the disk (DK1:/L yields a directory with no entries and
480 free blocks)
.R ASEMBL - starts a version of MACRO-11
.R XBASIC - starts BASIC (again no docs but can hack a bit)
.R EDIT - gives a '*' prompt
.R DUMP - gives an octal dump
.R MACRO - on SAMPLE.MAC exits to ODT at address 000002
Very weird stuff. I think it is RT-11v2B
--Chuck
--------------------- BEGIN TRANSCRIPT LISTING
$dx
DISTRIBUTION HT-11 VERSION H1B [890-6-2]
.SET USR NOSWAP
.SET TTY SCOPE
THE PREVIOUS DATE WAS 7-APR-82
CHANGE?
A DISK HAS A DIRECTORY RECORDED ON IT. THIS DIRECTORY CONTAINS INFORMATION
ABOUT THE FILES THAT ARE ON THE DISK. WHEN THE DISK IS FIRST USED, THE
DIRECTORY AREA MUST BE ZEROED.
IT IS NOT CERTAIN IF THIS SCRATCH DISK HAS A GOOD DIRECTORY OR NOT.
SINCE WHEN THE DIRECTORY IS ZEROED, ALL INFORMATION ON THE DISK IS LOST,
YOU ARE BEING ASKED TO CONFIRM THAT THERE IS NO
INFORMATION THAT YOU WANT ON THE DISK.
TYPE "ZAP" AND PRESS "RETURN" TO ZERO THE DIRECTORY.
ZAP
THE DIRECTORY IS ZEROED ON YOUR SCRATCH DRIVE.
.ASSIGN DX1=DK
.PIP
?ILL CMD?
.R PIP
*DK0:/L
7-APR-82
MONITR.SYS 43 22-DEC-78
TT .SYS 2 22-DEC-78
PP .SYS 2 22-DEC-78
PR .SYS 2 22-DEC-78
LP .SYS 2 24-SEP-79
BOOTUP.SYS 14 16-MAR-79
ODT .OBJ 9 22-DEC-78
PIP .SAV 12 16-FEB-79
EDIT .SAV 14 22-DEC-78
LINK .SAV 21 22-DEC-78
ASEMBL.SAV 26 22-DEC-78
CREF .SAV 5 22-DEC-78
EXPAND.SAV 12 22-DEC-78
SRCCOM.SAV 11 22-DEC-78
DUMP .SAV 5 22-DEC-78
LIBR .SAV 15 22-DEC-78
PATCH .SAV 5 22-DEC-78
SYSMAC.SML 20 16-FEB-79
XBASIC.SAV 45 16-FEB-79
SAMPLE.MAC 2 16-MAR-79
FORMAT.SAV 2 19-JUN-79
FORMAT.MAC 5 19-JUN-79
MACRO .SAV 45 15-JUN-79
IDCRD .BAS 3 19-JUN-79
WCZTST.DAT 4 29-AUG-79
WCZTST.BAS 1 29-AUG-79
WCZTST.TST 4 29-AUG-79
MCS .ASM 38 21-NOV-79
H8RCV .BAS 1 27-NOV-79
JIM .JIM 1 29-NOV-79
H8RCV .BAX 1 4-DEC-79
31 FILES, 372 BLOCKS
108 FREE BLOCKS
*
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