[Simh] Problem with reading tape with PDP-11 SIMH

Timothe Litt litt at ieee.org
Thu May 21 22:55:03 EDT 2015


On 21-May-15 22:38, J. David Bryan wrote:
> On Thursday, May 21, 2015 at 18:04, Timothe Litt wrote:
>
>> If it isn't in the repo, it might as well not exist.
> It's hidden at the SIMH Web site:
>
>   http://simh.trailing-edge.com/
>
> ...behind the link in the phrase, "Also available is a collection of 
> tools...."  ;-)
>
>
So the site that says:
 "V3.9 (and bug fixes to it) is the last feature release of SimH that
will be hosted at this web site. All future versions can be found in
a public source repository <https://github.com/simh/simh>." has the most
recent release of the tools... :-(

The one that I only visit for the non-code items...Bob's papers, etc.

Hopefully Mark will merge the tools into the repo.

BTW, a quick glance shows that mtdump clears the error bit before
comparing a metadata word for 0 (tape mark.)

This is incorrect.  A tape mark is 32-bits of zero.  0x80000000 is an
invalid encoding and should be reported as
a format error.  (It indicates a length of zero with an error, but the
record length field must be non-zero.)

Sigh.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.trailing-edge.com/pipermail/simh/attachments/20150521/3371ef32/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4942 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://mailman.trailing-edge.com/pipermail/simh/attachments/20150521/3371ef32/attachment.bin>


More information about the Simh mailing list