Tasty » Adam Sampson's ibm bookmarks

Dalby Datormuseum edit / delete

"Dalby Datormuseum preserves and restores old computers. Our collection includes a number of historic computers and peripherals from a multitude of different vendors. Digital Equipment, Hewlett Packard, IBM, Commodore, Luxor and Ericsson are represented." A Swedish retrocomputing perspective.

to dec hp ibm retrocomputing ... on 07 June 2018

Computer Architecture History / CPU History -- Mark Smotherman edit / delete

"I want to collect here information on historical firsts and on important machines that are relatively unknown and/or are underappreciated." Excellent articles on STRETCH and similar systems.

to architecture history ibm retrocomputing stretch ... on 07 June 2018

Computer Systems edit / delete

IBM's "Future Systems" project, and related initiatives. There are some interesting architectural ideas here.

to architecture future-systems history ibm retrocomputing ... on 07 June 2018

Douglas W. Jones's punched card index edit / delete

"An illustrated technical history".

to card history ibm retrocomputing unit-record ... on 05 May 2018

Stretch-ing Is Great Exercise: It Gets You in Shape to Win - IEEE Journals & Magazine edit / delete

Fred Brooks on the IBM Stretch project, which pioneered pipelining, 8-byte bytes, multihead hard disks, and various other things we take for granted today. I particularly liked this bit about ECC memory: "The contract required that Stretch run for a month with better than 90% availability. The machine chugged along great and was hovering right above the 90% line when one bit driver, or else one sense amplifier, failed completely! For the rest of the acceptance test, the IBM team just ran it the way it was. There was not time to stop and fix it; stopping would have ruined the statistics. So the Stretch ran along to the end of the month single-error correcting every memory access from that box."

to architecture ecc history ibm pipelining retrocomputing stretch ... on 16 February 2018

About Selectric Typewriter Museum edit / delete

More interesting for the various very early PCs.

to ibm pc retrocomputing typewriter ... on 06 January 2018

rcornwell/ctss: CTSS source and binaries edit / delete

Tidy copy of the CTSS code. I was struck by how modern this is in several ways -- the MAD language it's written in is remarkably nice for the timeframe.

to ctss ibm os retrocomputing source ... on 27 August 2016

MVT for APL edit / delete

Canned Hercules installation for people who want to play with APL. This would make a fun calculator application...

to apl emulation hercules ibm mvt retrocomputing ... on 21 June 2016

8088 MPH: Olympiad: IBM prototype fonts unearthed edit / delete

Fonts from the IBM RT PC. Serif bitmaps, which are unusual and fairly attractive.

to bitmap fonts ibm retrocomputing terminal ... on 23 March 2016

A bit more about me edit / delete

A computer collection including (nearly?) every model of PS/2, with pictures. I don't find these machines very exciting, but this is certainly a useful spotter's guide...

to dec ibm ps2 retrocomputing vax ... on 11 January 2016