29 Apr
1999
29 Apr
'99
4:15 p.m.
Ok, so when I boot the disk labelled RT-11V02C on my
H-11 it seems to
work except if I try to use PIP to copy a file to a disk I formatted with
HT-11 it doesn't work (gives me DIR-RD-ERR).
It's possible that HT11 had some slight variation in the directory
structure which causes real RT-11 to throw up its hands in disgust.
I realize DEC was "famous" for not providing
formatting software but is
there a FORMAT program for this version? Interestingly PIP on the HT-11
DISK can read the disks just not the "official" RT11
Not so much that there is no software for it, some devices had no
capability to format... You cannot format an 8" floppy on an RX01.
Even on the RX02, all you can do (with true DEC hardware) is change
a single-density RX01 to a double-density RX02 or vice versa. If
the disk has no formatting to begin with, RX02s can't help it.
The only machine, strangely enough, which could truly format RX01s
was the PDT-11/150... It writes the low-level format whenever it
writes a block... I had a RX01 attached to one of my file cabinets
at work, using a magnet ring from an RK05... but I regularly used
it on the PDT just to show people it could be done...
BTW - a side effect of this is that only those sectors actually
written by the PDT-11/150 will have single-density formatting...
if the disk is otherwise a double-density disk, the unwritten
sectors remain double-density... strange, eh?
Contents of Disk 1: Contents of Disk 2:
MONITR.SYS 46 5-JAN-78 RKMNSJ.SYS 46 5-JAN-78
typically, MONITR.SYS was RT-11 SJ monitor for RK05
what the bootable monitor
was called.
DXMNFB.SYS 58 5-JAN-78 RKMNFB.SYS 58 5-JAN-78
RT-11 FB monitor for RX01 RT-11 FB monitor for RK05
DP .SYS 2 5-JAN-78 RFMNSJ.SYS 46 5-JAN-78
SJ/FB RP02/03 disk handler RT-11 SJ monitor for RF11
(fixed head disk)
RK .SYS 2 5-JAN-78 RFMNFB.SYS 58 5-JAN-78
SJ/FB RK05 disk handler RT-11 FB Monitor for RF11
RF .SYS 2 5-JAN-78 DPMNSJ.SYS 46 5-JAN-78
SJ/FB RF11 disk handler RT-11 SJ monitor for RP02/03
TT .SYS 2 5-JAN-78 DPMNFB.SYS 58 5-JAN-78
SJ/FB TT handler RT-11 FB monitor for RP02/03
LP .SYS 2 5-JAN-78 DT .SYS 2 5-JAN-78
SJ/FB Parallel Line printer SJ/FB Dectape (TU56) handler
handler
BA .SYS 7 5-JAN-78 DX .SYS 2 5-JAN-78
SJ/FB Batch handler SJ/FB RX01 disk handler
SYSMAC.SML 18 5-JAN-78 CR .SYS 3 5-JAN-78
System Macro Library SJ/FB Card reader handler
SYSMAC.8K 25 5-JAN-78 MT .SYS 6 5-JAN-78
System Macro Library SJ/FB Magtape handler
BATCH .SAV 25 5-JAN-78 MM .SYS 6 5-JAN-78
Batch processor SJ/FB Magtape handler
EDIT .SAV 19 5-JAN-78 PR .SYS 2 5-JAN-78
Text editor, uses commands SJ/FB Paper tape reader handler
kind of like TECO, but
different
MACRO .SAV 31 5-JAN-78 PP .SYS 2 5-JAN-78
Assembler SJ/FB paper tape punch handler
ASEMBL.SAV 21 5-JAN-78 CT .SYS 5 5-JAN-78
Assembler (?) I never used SJ/FB TU60 cassette handler
this one...
EXPAND.SAV 12 5-JAN-78 DS .SYS 2 5-JAN-78
I've forgotten... SJ/FB RJS04 disk handler
CREF .SAV 5 5-JAN-78 FILEX .SAV 11 5-JAN-78
Cross-referencer File Exchange utility (knows
about RSTS file structure as
well as interchange floppies
and TOPS-10 volumes.
LINK .SAV 25 5-JAN-78 SRCCOM.SAV 11 5-JAN-78
Linker Source file comparison utility
PIP .SAV 14 5-JAN-78 DUMP .SAV 5 5-JAN-78
Peripheral Interchange Program DUMP utility
PATCH .SAV 5 5-JAN-78 PATCHO.SAV 33 5-JAN-78
Utility for patching image Utility for patching object
files files
ODT .OBJ 9 5-JAN-78 VTMAC .MAC 7 5-JAN-78
'Octal Debugging Technique' VT11 macro definition file
I always had a problem with
the name. I always thought
it should have been 'Octal
Debugging Tool'.
VTHDLR.OBJ 8 5-JAN-78 SYSF4 .OBJ 33 5-JAN-78
VT11 display handler object I don't know...
library
DEMOFG.MAC 5 5-JAN-78 KB .MAC 33 5-JAN-78
Demo foreground program, SJ/FB keyboard handler, allowed
communicates with... input from keyboard (the way
TT handled device output)
DEMOBG.MAC 4 5-JAN-78
Demo background program
LIBR .SAV 15 5-JAN-78
Librarian utility, used to
build object libraries
TT 1 5-JAN-78
This is not a standard RT
file...
LOAD .SAV 7 5-JAN-78
This is not a standard RT
file, it may be part of what
is executed at boot time...?
Thanks for the walk down memory lane...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
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