On 8/28/23 16:56, Dave Babcock via cctalk wrote:
> Chuck,
>
> Yes, I mean Monitor II-D.
>
> No, CHM does not have a working 1311 drive. The need for Monitor II-D
> is for the IBM 1620 Model 2 simulators being written. Monitor I does not
> run correctly on a 1620 Model 2 when index registers are
Chuck,
Yes, I mean Monitor II-D.
No, CHM does not have a working 1311 drive. The need for Monitor II-D
is for the IBM 1620 Model 2 simulators being written. Monitor I does not
run correctly on a 1620 Model 2 when index registers are enabled and
used by a program.
Dave
On 8/28/2023 3:48 P
On 8/28/23 13:54, Dave Babcock via cctalk wrote:
> To all,
> What they need, and CHM would be very interested in adding to its IBM
> 1620 collection, is original software specifically for the IBM 1620
> Model 2. Of particular interest are the IBM 1620 Monitor II and IBM
> 1620-2 diagnostics, but
> Some 20 years ago, I led the Computer History Museum's restoration of an
> IBM 1620 Model 1 computer.
We all owe you thanks for this.
mcl
