Al Kossow <
a...@bitsavers.org> writes:
>On Sunday, May 7, 2023 at 8:27:58=E2=80=AFAM UTC-7, Al Kossow wrote:
>> On Tuesday, August 16, 2022 at 3:48:18=E2=80=AFPM UTC-7, Duncan Fenton wr=
>ote:=20
>> > Hi,=20
>> > I was the lead developer of the CMS (internally SL9) MCP working in Cum=
>bernauld from 1972 thru 1978. The SL9 software (MCP, compilers, utilities) =
>was planned from the start to run on B80 (Cumbernauld), B800 (Downingtown) =
>and B1800 (Liege) series. That was achieved by each plant writing a suite o=
>f microcoded interpreters to emulate the same virtual machine for compiled =
>COBOL and MPL bytecodes. [This concept is now used for the Java Virtual Mac=
>hine and others.] The MCP kernel was hand coded (in microcode) at each part=
>icipating plant to a common spec - the "SL9 virtual machine".=20
>> >
>> Have you kept any documentation, or software?=20
>>=20
>> I'm trying to fill in my documentation collection from the product series=
> and I have almost nothing on the later machines.=20
>> Oddly, I did come across schematic sets.
>
>CHM recently received several binders full of sales brochures for the CMS a=
>nd accounting machine products. I've been working on scanning them and uplo=
>ading to
http://bitsavers.org/pdf/burroughs. This information doesn't appea=
>r to be available anywhere else on the web.
Hm. That's the first time I've heard of the B4500, I had thought that the
high-end medium systems started with the B4700; granted the B4800 had been
in service for a few years when I started at Pasadena.
I have one of the C3316 calculators (nixie tubes) which still works,
albeit some of the keys are sticky (shown in the products of burroughs 1967).