William Donzelli wrote:
>
> > All I have from that IBM stuff is the book 'Programing the IBM 1130'
> > by J.K. Hughes. What I do remember is that the logic sure used a lot
> > of one-shots and delay lines.
>
> That is probably just the stuff in the drive itself. The real brain, the
> 2841, was (yes, probably sadly "was") a complicated microcoded box that
> latched onto a channel, controlled a number of drives and drums, and
> could run diagnostics offline.
>
> Apparently 1130 systems could use 2311s with a control unit located as a
> feature of the 1131. Must have been a big feature...or maybe IBM
> cheapened the control unit with said one-shots, delay lines, and other
> kludges, in order to cram it into the processor.
I don't think cheap was the problem, overkill was. That was a complex
drive for fast control. Also too was the fact this was big $$$
equipment so they had no reason make really simple but rather built
to last. There really is not that much on the IBM-1130 on the web.
That is too bad as for its time it was a very nice machine. A read
somewhere too the IBM-1130 was also microcoded too.
A quick search on the web. Wow more than when I checked a year ago.
http://people.mn.mediaone.net/bigoak/fs/ibm1130.htm A working IBM-1130.
http://www.shubs.net/1130/ basic info
http://ed-thelen.org/comp-hist/vs-ibm-1130.html more history.
> William Donzelli
> aw288_at_osfn.org
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Sun Jan 27 2002 - 18:26:42 GMT