Accessing DECUS disk images

Paulo Rebordão

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Jun 11, 2025, 1:13:13 PM6/11/25

to [PiDP-11]

My PiDP-11 drive DU1 contains the DECUS tape / disk images.

They consist of a set of DSK files.

From the included README file I understood that I should use the MOUNT command file to install each of those images individually.

I did that for one of the images (XLISP) and a new virtual drive VF0: was created.

However, when typing DIR VF0: I get "cannot find directory file"

I tried a couple of other image files but the result was the same. Am I missing some step ?

Paulo Rebordão

Johnny Billquist

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Jun 11, 2025, 1:19:06 PM6/11/25

to pid...@googlegroups.com

Did you actually mount, or just VCP CONNECT them?

After connecting, you then need to mount the disk with MOU.

I do suspect that whatever you have there is an older version of XLISP
than I've made available with RPM.

Johnny

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email: b...@softjar.se || Reading murder books
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Mark Matlock

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Jun 11, 2025, 1:25:35 PM6/11/25

to Paulo Rebordão, [PiDP-11]

Paulo,

The best LISP for RSX11M+ is the version that Johnny Billquist has made available via his RPM software system.

As far as how to access the DU1:[1,1] RSX SIG tapes and other software see the log file below.

Best regards,

Mark

>set /def=du1:[1,1]

>sho /def

DU1:[1,1] Named TT24:

Protection UIC: [6,1]

>@mount xlisp

>; XLISP

>;vcp cre /units=1

>vcp conn [1,1]XLISP.dsk/mou:pub:ovr

VCP - Device VF0: has been assigned.

>asn vf0:=XLISP:/gbl

>@ <EOF>

>dir vf0:[*,*]

Directory VF0:[240,5]

11-JUN-2025 12:17

ANIMAL.LSP;1 2. 17-DEC-1999 16:05

BINDER.LSP;1 1. 17-DEC-1999 16:05

CTYPE.H;1 3. 17-DEC-1999 16:05

FOO.TXT;1 1. 17-DEC-1999 16:06

FOOD.ENC;1 3. 17-DEC-1999 16:06

FOOI.ENC;1 1. 17-DEC-1999 16:06

LISP.LSP;1 1. 17-DEC-1999 16:06

LOGIC.LSP;1 5. 17-DEC-1999 16:06

MEMBER.LSP;1 1. 17-DEC-1999 16:06

MYLIB.LSP;1 2. 17-DEC-1999 16:06

PP.LSP;1 1. 17-DEC-1999 16:06

PRETTY.LSP;1 2. 17-DEC-1999 16:06

RDX.C;1 5. 17-DEC-1999 16:06

README.TXT;1 3. 17-DEC-1999 16:06

READX.LSP;1 1. 17-DEC-1999 16:06

SEEK.MAC;1 3. 17-DEC-1999 16:06

SETJMP.H;1 1. 17-DEC-1999 16:06

SMALL.CMD;1 1. 17-DEC-1999 16:06

TEST.LSP;1 1. 17-DEC-1999 16:06

THE.LSP;1 6. 17-DEC-1999 16:06

TRACE.LSP;1 3. 17-DEC-1999 16:06

X.CMD;1 1. 17-DEC-1999 16:06

X.LSP;1 1. 17-DEC-1999 16:06

XL.CMD;1 1. 17-DEC-1999 16:06

XLBIND.C;1 3. 17-DEC-1999 16:06

XLBLD.CMD;1 1. 17-DEC-1999 16:06

XLC.CMD;1 1. 17-DEC-1999 16:06

XLCC.CMD;1 1. 17-DEC-1999 16:06

XLDMEM.C;1 18. 17-DEC-1999 16:06

XLERR.TXT;1 3. 17-DEC-1999 16:06

XLERRD.ENC;1 9. 17-DEC-1999 16:06

XLERRI.ENC;1 2. 17-DEC-1999 16:06

XLEVAL.C;1 13. 17-DEC-1999 16:06

XLFIO.C;1 10. 17-DEC-1999 16:06

XLHACK.C;1 31. 17-DEC-1999 16:06

XLIO.C;1 4. 17-DEC-1999 16:06

XLISP.C;1 4. 17-DEC-1999 16:06

XLISP.H;1 11. 17-DEC-1999 16:06

XLISP.HLP;1 47. 17-DEC-1999 16:06

XLISPNEWS.TXT;1 1. 17-DEC-1999 16:06

XLKMAP.C;1 14. 17-DEC-1999 16:06

XLLIST.C;1 26. 17-DEC-1999 16:06

XLMATH.C;1 17. 17-DEC-1999 16:06

XLOBJ.C;1 35. 17-DEC-1999 16:06

XLPRIN.C;1 7. 17-DEC-1999 16:06

XLREAD.C;1 17. 17-DEC-1999 16:06

XLSTR.C;1 12. 17-DEC-1999 16:06

XLSUBR.C;1 22. 17-DEC-1999 16:06

XXL.CMD;1 1. 17-DEC-1999 16:06

Total of 360./360. blocks in 49. files

Directory VF0:[240,6]

11-JUN-2025 12:17

FACT.LSP;1 1. 17-DEC-1999 16:06

INIT.LSP;1 5. 17-DEC-1999 16:06

OBJECT.LSP;1 5. 17-DEC-1999 16:06

PROLOG.LSP;1 9. 17-DEC-1999 16:06

README.TXT;1 1. 17-DEC-1999 16:06

TRACE.LSP;1 2. 17-DEC-1999 16:06

XLBFUN.C;1 19. 17-DEC-1999 16:06

XLBIND.C;1 4. 17-DEC-1999 16:06

XLCONT.C;1 36. 17-DEC-1999 16:06

XLDBUG.C;1 9. 17-DEC-1999 16:06

XLDMEM.C;1 14. 17-DEC-1999 16:06

XLEVAL.C;1 16. 17-DEC-1999 16:06

XLFIO.C;1 19. 17-DEC-1999 16:06

XLFTAB.C;1 13. 17-DEC-1999 16:06

XLGLOB.C;1 5. 17-DEC-1999 16:06

XLINIT.C;1 7. 17-DEC-1999 16:06

XLIO.C;1 7. 17-DEC-1999 16:06

XLISP.C;1 4. 17-DEC-1999 16:06

XLISP.DOC;1 108. 17-DEC-1999 16:06

XLISP.H;1 15. 17-DEC-1999 16:06

XLISP.OPT;1 2. 17-DEC-1999 16:06

XLISPBLD.COM;1 3. 17-DEC-1999 16:06

XLISPDBG.COM;1 3. 17-DEC-1999 16:06

XLISPDBG.LOG;1 5. 17-DEC-1999 16:06

XLISPLNK.COM;1 1. 17-DEC-1999 16:06

XLJUMP.C;1 5. 17-DEC-1999 16:06

XLLIST.C;1 38. 17-DEC-1999 16:06

XLMATH.C;1 13. 17-DEC-1999 16:06

XLOBJ.C;1 34. 17-DEC-1999 16:06

XLPRIN.C;1 6. 17-DEC-1999 16:06

XLREAD.C;1 18. 17-DEC-1999 16:06

XLSETF.C;1 4. 17-DEC-1999 16:06

XLSTR.C;1 9. 17-DEC-1999 16:06

XLSUBR.C;1 9. 17-DEC-1999 16:06

XLSYM.C;1 10. 17-DEC-1999 16:06

XLSYS.C;1 7. 17-DEC-1999 16:06

Total of 466./466. blocks in 36. files

Grand total of 826./826. blocks in 85. files in 2. directories

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Johnny Billquist

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Jun 11, 2025, 1:33:42 PM6/11/25

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D'oh! Of course. The "directory not found" is because Paulo didn't give
any directory to list, and the default directory he is at don't exist on
that disk. :)

Johnny

> XLISPBLD.COM <http://XLISPBLD.COM>;1 3. 17-DEC-1999 16:06
> XLISPDBG.COM <http://XLISPDBG.COM>;1 3. 17-DEC-1999 16:06

> XLISPDBG.LOG;1 5. 17-DEC-1999 16:06

> XLISPLNK.COM <http://XLISPLNK.COM>;1 1. 17-DEC-1999 16:06

> XLJUMP.C;1 5. 17-DEC-1999 16:06
> XLLIST.C;1 38. 17-DEC-1999 16:06
> XLMATH.C;1 13. 17-DEC-1999 16:06
> XLOBJ.C;1 34. 17-DEC-1999 16:06
> XLPRIN.C;1 6. 17-DEC-1999 16:06
> XLREAD.C;1 18. 17-DEC-1999 16:06
> XLSETF.C;1 4. 17-DEC-1999 16:06
> XLSTR.C;1 9. 17-DEC-1999 16:06
> XLSUBR.C;1 9. 17-DEC-1999 16:06
> XLSYM.C;1 10. 17-DEC-1999 16:06
> XLSYS.C;1 7. 17-DEC-1999 16:06
>
> Total of 466./466. blocks in 36. files
>
> Grand total of 826./826. blocks in 85. files in 2. directories
>
>> On Jun 11, 2025, at 12:12 PM, Paulo Rebordão <pjreb...@gmail.com

>> <mailto:pjreb...@gmail.com>> wrote:
>>
>> My PiDP-11 drive DU1 contains the DECUS tape / disk images.
>> They consist of a set of DSK files.
>> From the included README file I understood that I should use the
>> MOUNT command file to install each of those images individually.
>>
>> I did that for one of the images (XLISP) and a new virtual drive VF0:
>> was created.
>> However, when typing DIR VF0: I get "cannot find directory file"
>>
>> I tried a couple of other image files but the result was the same. Am
>> I missing some step ?
>>
>> Paulo Rebordão
>>
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "[PiDP-11]" group.
>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to pidp-11+u...@googlegroups.com

>> <mailto:pidp-11+u...@googlegroups.com>.

>> To view this discussion visit https://groups.google.com/d/msgid/
>> pidp-11/CA%2BgrvcpV18%3D7HZrdsUuJ-1zgxB3fZabjqhtZXy8gi5Wn-Bzd-

>> w%40mail.gmail.com <https://groups.google.com/d/msgid/pidp-11/
>> CA%2BgrvcpV18%3D7HZrdsUuJ-1zgxB3fZabjqhtZXy8gi5Wn-Bzd-
>> w%40mail.gmail.com?utm_medium=email&utm_source=footer>.
>

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Paulo Rebordão

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Jun 11, 2025, 1:59:47 PM6/11/25

to Mark Matlock, [PiDP-11]

Thanks Mark

I know why I wasn't seeing the files. I didn't add [*.*] to dir

Anyway, I was just interested in "kicking the tires", so I wasn't looking for any particular Lisp implementation.

And since I had the DECUS one already on the machine, I decided to try it.

However, as far as I can understand there's not an executable as part of the distribution, just the C sources.

And it seems they were originally written for VAX/VMS... so I'll pass and go for Johnny's implementation.

Paulo Rebordão

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