I found several pdp-11 tape image files on the net which have ".tap"
suffix. It isn't well known simh/e11/tap/tpc tape images. Please help
to identify which format they have. How such file can be converted to
simh .tap or .tpc or how it can be used/mounted?
It looks to me like some gomer "imaged" a tape with dd or similar tool,
possibly on a drive set to fixed 512-byte block size. See, for example,
the 80 byte VOL1 record all alone in a 0x200-sized chunk with zero
padding.
If the original tape actually WAS fb512, and there was only one tape
"file" on the media, you might be able to convert this into an actual
.tap file by simply wrapping each chunk of 512 bytes in the proper
record length field. That is, place a word 0x00000200 (note:
little-endian) before and after each 512 byte chunk of the input file,
and the words 0x00000000 and 0xffffffff at the end of the file.
If the tape wasn't fb512, or contains multiple logical files, then about
the only way to save the image would be to grovel through it trying to
intuit record boundaries based on intimate knowledge of the habits of
the tool used to write the original.
De
On 2013-03-14 16:07, blmink wrote:
Dear All,
I found several pdp-11 tape image files on the net which have ".tap"
suffix.
It isn't well known simh/e11/tap/tpc tape images.
Please help to identify which format they have.
How such file can be converted to simh .tap or .tpc or how it can be
used/mounted?
Below is the beginning of hexdump of one of these files named "F77.TAP":
[...]
Where did you find them? They look totally broken. I can't see any reasonable format in them at all. The first 512 bytes might be some kind of meta-information, but it's really weird.
Get some proper images instead, as from trailing-egde.
Johnny
Al 14/03/13 12:39, En/na Jordi Guillaumes i Pons ha escrit:
Hi,
I have built another little simulated machine:
Name: BITXOX
Address: 7.60
The correct address is 7.76... Damn multitasking!
Hi,
I have built another little simulated machine:
Name: BITXOX
Address: 7.60
This one simulates a small VAX 11/730 running VMS 5.5. This machine has RSX11/VMS running and the GUEST account has MCR as default CLI. It's a little weird thing I have set up just as a curiosity. If someone pays a visit, please consider it is SLOW, with just 4M of RAM (several processes are swapped out just after startup), and sharing its host (a Rasp-pi) with several other virtual machines...
Username: GUEST
Password:
Welcome to VAX/VMS version V5.5-2 on node BITXOX
Last interactive login on Thursday, 14-MAR-2013 12:29
>@ <EOF>
> pip
PIP>/li
Directory SY0:[GUEST]
14-MAR-13 12:37
BUILD.CMD;1 1. 01-MAR-13 23:20
HELLO.EXE;1 38. C 01-MAR-13 23:22
HELLO.FTN;2 1. 01-MAR-13 23:16
HELLO.LST;2 2. 01-MAR-13 23:21
HELLO.MAP;2 17. 01-MAR-13 23:22
HELLO.OBJ;2 1. 01-MAR-13 23:21
LOGIN.CMD;1 1. 01-MAR-13 23:04
Total of 61./72. blocks in 7. files
PIP>
On 13 Mar 2013, at 18:23, "Mark Pizzolato - Info Comm" <Mark at infocomm.com> wrote:
On Wednesday, March 13, 2013 at 3:03 PM, Cory Smelosky wrote:
On 13 Mar 2013, at 17:52, "Dave McGuire" <mcguire at neurotica.com> wrote:
On 03/13/2013 05:41 PM, Cory Smelosky wrote:
What are the current values in /etc/system?
That's a parameter override file; it won't be in there unless someone
wants to change it from the default.
Is there a man page detailing all the options?
I have no idea. You guys have dug up this info....
Most Solaris folk aren't really accustomed to just rebooting their
machines.
So I guess I fit in? I don't even like rebooting NT 4. ;)
I suggest that you make the change to /etc/system now so you don't forget when you go to shutdown to install the NICs or you'll end up with multiple reboots at that time....
Then again, if your system has trouble rebooting after installing the NICs you won't know if it has to do with the newly added hardware or the change to the OS configuration file .
I'll let Brian be the guinea pig then. ;)
I like to test one change at a time.
- Mark
Speaking of SIMH, anyone try the Alpha emulator in the betas yet?
Is it any good?
Just downloaded the beta sources but can't find a makefile or any docs, anyone got pointers?
sampsa
On Wed, Mar 13, 2013 at 7:25 PM, Dave McGuire <mcguire at neurotica.com> wrote:
On 03/13/2013 06:02 PM, Cory Smelosky wrote:
What are the current values in /etc/system?
That's a parameter override file; it won't be in there unless someone
wants to change it from the default.
Is there a man page detailing all the options?
I believe so.
Most Solaris folk aren't really accustomed to just rebooting their
machines.
So I guess I fit in? I don't even like rebooting NT 4. ;)
Fear. ;)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Hello!
Actually most NT boxes don't need to be rebooted unless the user is
stuffing in software.
Oh and Dave? That Solaris box you have has been very helpful, for the
crowd of Cybermen who need a fast machine for their Cyberleader.
Fly? Hmmm. Be careful of your riding companions there's a crowd of
furry individual who need a fast flight someplace.....
-----
Gregg C Levine gregg.drwho8 at gmail.com
"This signature fought the Time Wars, time and again."
On 03/13/2013 06:02 PM, Cory Smelosky wrote:
What are the current values in /etc/system?
That's a parameter override file; it won't be in there unless someone
wants to change it from the default.
Is there a man page detailing all the options?
I believe so.
Most Solaris folk aren't really accustomed to just rebooting their
machines.
So I guess I fit in? I don't even like rebooting NT 4. ;)
Fear. ;)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
