23 Sep
2004
23 Sep
'04
2:37 a.m.
Ed Kelleher wrote:
At 07:40 AM 9/23/2004, you wrote:
The dual-height 11/03 processor allows a CIS as well. I have a
couple that have that chip. As far as I can determine, both those
machines were used to sort, analyse, and archive incoming raw data.
Honestly, though, I don't think I've ever run a job on the /03 that
touched the CIS.
Doc
I've always wondered what systems/processors
(other than IBM mainframes)
that had hardware decimal arithmetic support. I don't mean 'decimal
adjust' instructions, I'm talking about full
add/subtract/multiply/divide/etc. The only other one I know of is the
Wang VS, which came standard with support for 'packed decimal' data, and
even floating-point decimal. The Wang VS instruction set was very
similar to the IBM 360/370, even the packed decimal data format was the
same.
DEC PDP11/23 CPU has sockets for 2 extra chips (40 pin DIPS).
One is hardware floating point. This is fairly common.
The other for a CIS - Commercial Instruction Set with full set of
decimal instructions as you list.