The IBM System/23 Datamaster computer, a direct predecessor of the venerable IBM PC.
Another IBM System/23 Datamaster collector just sent me these scanned maintenance manuals. I haven’t had a chance to take a close look to them yet, but I can already see they’re going to be very helpful because at least one of them includes PINOUTS! They’ve also been sent over to Bitsavers for archival. Enjoy!
Here are some pictures of the circuit card drawer and plug-in cards of my System/23 Datamaster. I took them in order to compare my machine vs. a couple machines owned by another nearby collector. I apologize for the less than ideal lighting and focus.
I just became the proud new owner of an IBM System/23 Datamaster computer system yesterday. This 8085-based computer is an immediate predecessor to the IBM PC. It has BASIC in ROM, and two 8" floppy disk drives. I don’t have any disks or documentation for it yet, and I would like to get my hands on some of that.
Here are a couple of quick pictures that I took for Big Blue Week over on the RetroBattlstations subreddit.
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