On 2016-04-21 6:35 PM, Josh Dersch wrote:
On Thu, Apr 21, 2016 at 2:34 PM, Ali <cct...@ibm51xx.net> wrote:
Actually, the first one was called XT/370 because it plugged into an
XT!
Then came AT/370. Those were obviously ISA boards. Then came some
variants that were microchannel. The final iterations were PCI based.
Guy,
I am not sure about the other systems but my understanding of the XT/370
and AT/370 was that they were glorified terminals i.e. instead of having a
terminal and a PC on your desk you could have it all in one. Is this wrong?
I think you're thinking of the 3270 PC and 3270 AT, which was pretty much
what you described here...
- Josh
No the 3270 PC and 3270 AT where a special configuration for 3270
terminal emulation it conatined a special keyboard with more keys that
the normal keyboard and connected to a special adapter card in the
system. These machines also had a different display and of course came
with a 3270 emulation adapter.
There was definitely a XT/370 and likely an AT/370 as well the processor
on the the 370 card in these machines was rumoured to be a modified
Motorola 68K with special microcode to execute 370 instructions. These
machines ran a modified version of VM.
The 9371 system used PS/2 mod 80 system boards for I/O processors and
had a microchannel card sandwich in them that was the 370 processor, I
do not believe they could run MVS but they could run VM and VSE.
Paul.
