On Sunday, July 24th, 2016 at 22:17:24 -0700, Don North
wrote:
On 7/24/2016
2:37 PM, Paul Koning wrote:
On Jul 24, 2016, at 11:06 AM, william degnan
<billdegnan at gmail.com>
wrote:
...
Attempts to boot from RT11SJ.SYS under V04.00 of RT-11 with 24K
bytes of memory were successful. Attempts to boot with 16K bytes of
memory were also successful. An RK05 was used as the disk drive. The
error message "Insufficient memory" is displayed, but some useful work
might be done with just 16K bytes of memory. However, you did not
ask if useful work being done was one of the criteria?
FWIW, I used to run
RT11SJ on an 11/20 with 8 kW (16 kB) of memory
and RC11 system disk, in college. That fit with no trouble, enough
room to run RT BASIC and a reasonably application program.
paul
And it still works today:
PDP-11 simulator V4.0-0 Beta git commit id: 4065f47f
sim> set cpu 11/05 16k
sim> sho cpu
CPU 11/05, idle disabled, autoconfiguration enabled
16KB
sim> att rk0 rt11.dsk
sim> boot rk0
RT-11SJ V02C-02
.
.R PIP
*/L
DTMNSJ.SYS 46 27-NOV-75
DTMNFB.SYS 58 27-NOV-75
DP .SYS 2 27-NOV-75
RK .SYS 2 27-NOV-75
RF .SYS 2 27-NOV-75
TT .SYS 2 27-NOV-75
LP .SYS 2 27-NOV-75
BA .SYS 7 27-NOV-75
SYSMAC.SML 18 27-NOV-75
SYSMAC.8K 25 27-NOV-75
BATCH .SAV 25 27-NOV-75
EDIT .SAV 19 27-NOV-75
MACRO .SAV 31 27-NOV-75
ASEMBL.SAV 21 27-NOV-75
EXPAND.SAV 12 27-NOV-75
CREF .SAV 5 27-NOV-75
LINK .SAV 25 27-NOV-75
PIP .SAV 14 27-NOV-75
PATCH .SAV 5 27-NOV-75
ODT .OBJ 9 27-NOV-75
VTHDLR.OBJ 8 27-NOV-75
DEMOFG.MAC 5 27-NOV-75
DEMOBG.MAC 4 27-NOV-75
KB .MAC 33 27-NOV-75
LIBR .SAV 15 27-NOV-75
MONITR.SYS 46 27-NOV-75
RKMNFB.SYS 58 27-NOV-75
RFMNSJ.SYS 46 27-NOV-75
RFMNFB.SYS 58 27-NOV-75
DPMNSJ.SYS 46 27-NOV-75
DPMNFB.SYS 58 27-NOV-75
DXMNSJ.SYS 46 27-NOV-75
DXMNFB.SYS 58 27-NOV-75
DT .SYS 2 27-NOV-75
DX .SYS 2 27-NOV-75
CR .SYS 3 27-NOV-75
MT .SYS 6 27-NOV-75
MM .SYS 6 27-NOV-75
PR .SYS 2 27-NOV-75
PP .SYS 2 27-NOV-75
CT .SYS 5 27-NOV-75
DS .SYS 2 27-NOV-75
FILEX .SAV 11 27-NOV-75
SRCCOM.SAV 11 27-NOV-75
DUMP .SAV 5 27-NOV-75
PATCHO.SAV 33 27-NOV-75
VTMAC .MAC 7 27-NOV-75
SYSF4 .OBJ 33 27-NOV-75
BASIC .SAV 36
BAS8K .SAV 34
DEMO .BAS 3
51 FILES, 1014 BLOCKS
3760 FREE BLOCKS
*
.
.R BAS8K
BASIC V01B-02
*
READY
OLD
OLD FILE NAME--DEMO
READY
LIST
DEMO BASIC V01B-02
10 REM BASIC PROGRAM TO GENERATE N TERMS OF A FIBONACCI SERIES,
20 REM THE FIRST TWO TERMS OF WHICH ARE SPECIFIED BY THE USER.
30 REM
40 REM PRINT IDENTIFYING MESSAGE
50 PRINT "PROGRAM TO GENERATE A FIBONACCI SERIES"
60 REM
70 REM GET THE LENGTH AND FIRST TWO TERMS OF THE SERIES
80 PRINT "HOW MANY TERMS DO YOU WANT GENERATED";
90 INPUT L
100 IF L<>0 THEN 130
110 REM IF HE REQUESTS 0 TERMS,TERMINATE EXECUTION
120 STOP
130 PRINT "WHAT IS THE FIRST TERM";
140 INPUT T1
150 PRINT "WHAT IS THE SECOND TERM";
160 INPUT T2
170 REM MAKE SURE L IS NOT NEGATIVE OR TOO LARGE
180 IF L<3 THEN 200
190 IF L<50 THEN 220
200 PRINT L;"TERMS DOES NOT REALLY MAKE SENSE."
210 GO TO 80
220 REM PRINT THE FIRST TWO TERMS OF THE SERIES
230 PRINT "THE REQUESTED SERIES IS"
240 PRINT T1
250 PRINT T2
260 L=L-2
270 REM CALCULATE NEXT TERM AND PRINT IT
280 N=T1+T2
290 T1=T2
300 T2=N
310 PRINT N
320 REM DETERMINE IF SERIES IS FINISHED. IF SO,DO NEXT ONE.
330 L=L-1
340 IF L<=0 THEN 80
350 GO TO 280
360 END
READY
RUN
DEMO BASIC V01B-02
PROGRAM TO GENERATE A FIBONACCI SERIES
HOW MANY TERMS DO YOU WANT GENERATED?4
WHAT IS THE FIRST TERM?12
WHAT IS THE SECOND TERM?5
THE REQUESTED SERIES IS
12
5
17
22
HOW MANY TERMS DO YOU WANT GENERATED?0
STOP AT LINE 120
READY
V02C-02 is just one of the versions (out of about 23 versions) that are
available on the CD image at classiccmp which is available for download.
The V02C-02 version of RT-11 on the CD has 58 files with 1212 blocks,
although the date on all of the files is November 20th, 1975 or a week
earlier.
It would be interesting to compare all of the common files to see if
they are
identical. I suspect that they probably are.
What I am curious about are the two files:
ASEMBL.SAV
EXPAND.SAV
Did these two files do anything special?
For historical purposes, it would also be interesting to also preserve
the files:
BASIC.SAV
BAS8K.SAV
DEMO.BAS
that you have along with the F4.SAV (or FORTRA.SAV) which DEC
released in 1975 - probably V2 of FORTRAN IV. The early versions
of FORTRAN IV are available elsewhere for download
Jerome Fine
