Re: Book Recommendation: "Supermen" (about Cray, Norris, CDC, etc.)

"Timothy C. May" <tcmay@got.net> writes:
> Next came the vaunted 6600, after almost not being funded to completion. It
> waws the first true supercomputer. Cray had moved his team up to Chippewa
  ^^^^???

I used to play with a 6600. It had some interesting hardware features:
* It used one's complement rather than two's complement to represent negative
integers. (I.e. -x is the same as not x; a pattern of all 1's is '-0'.)
* It had 60-bit words for both integers and single-precision reals.
A 120-bit double precision was pretty slow. A word could fit 10 6-bit
characters, but any kind of text processing was a bitch.
* 15-bit addresses referred to the whole word. A word could contain
several instructions, but only an instruction on a word boundary
could be a target of a branch.

---

Dr.Dimitri Vulis KOTM
Brighton Beach Boardwalk BBS, Forest Hills, N.Y.: +1-718-261-2013, 14.4Kbps

I would like to be removed from this mailing list please


On Thu, 03 Apr 97 19:24:05 EST dlv@bwalk.dm.com (Dr.Dimitri Vulis KOTM)
writes:
>"Timothy C. May" <tcmay@got.net> writes:
>> Next came the vaunted 6600, after almost not being funded to 
>completion. It
>> waws the first true supercomputer. Cray had moved his team up to 
>Chippewa
>  ^^^^???
>
>I used to play with a 6600. It had some interesting hardware features:
>* It used one's complement rather than two's complement to represent 
>negative
>integers. (I.e. -x is the same as not x; a pattern of all 1's is 
>'-0'.)
>* It had 60-bit words for both integers and single-precision reals.
>A 120-bit double precision was pretty slow. A word could fit 10 6-bit
>characters, but any kind of text processing was a bitch.
>* 15-bit addresses referred to the whole word. A word could contain
>several instructions, but only an instruction on a word boundary
>could be a target of a branch.
>
>---
>
>Dr.Dimitri Vulis KOTM
>Brighton Beach Boardwalk BBS, Forest Hills, N.Y.: +1-718-261-2013, 
>14.4Kbps
>

Lloyd E Briggs wrote:
> 
> I would like to be removed from this mailing list please

  Send your request to jimbell@pacifier.com.
  He has a system that deals with these kinds of requests.
-- 
Toto
"The Xenix Chainsaw Massacre"
http://bureau42.base.org/public/xenix/xenbody.html