On Mon, 18 Sep 2023, Len Shustek wrote:
Just a few weeks ago I donated to the Computer History Museum a set of 14
original IBM black binders of "Type 7xx" manuals from the 1950s, including
the 727. That one is likely to be the same as what's on bitsavers, but since
it's no longer in hand I can'
On Wed, 2023-09-20 at 12:26 +0200, Christian Corti via cctalk wrote:
> On Mon, 18 Sep 2023, Len Shustek wrote:
> > Just a few weeks ago I donated to the Computer History Museum a set
> > of 14
> > original IBM black binders of "Type 7xx" manuals from the 1950s,
> > including
> > the 727. That one
Group,
Ive got a tape here from what I believe to be a VM system. The
structure is unknown to me, although I can possibly take a stab at it.
Lots of data between tapemarks that seems to consist of a number of
records that start out something like this (translated from EBCIDC):
> 02 43
Might be IBM CMS Conversational Monitor System (CMS, originally Cambridge
Monitor System). Used it in 1977. Don’t know about the format though.
Sent from my iPhone
On Sep 20, 2023, at 17:24, Chuck Guzis via cctalk wrote:
Group,
Ive got a tape here from what I believe to be a VM system. The
> Ive got a tape here from what I believe to be a VM system. The
> structure is unknown to me, although I can possibly take a stab at
> it. Lots of data between tapemarks that seems to consist of a number
> of records that start out something like this (translated from
> EBCIDC):
I think th
On 9/20/23 20:33, Dennis Boone via cctalk wrote:
> > Ive got a tape here from what I believe to be a VM system. The
> > structure is unknown to me, although I can possibly take a stab at
> > it. Lots of data between tapemarks that seems to consist of a number
> > of records that start out som
> The distance between the CMS header and the CMSN header appears to be
> much larger than 800 bytes--the first, for example is about 4K . The
> next CMS file name header follows about 80 bytes later.
Later versions of the filesystem would be more likely to use 2k or 4k
blocks.
> I don't see
