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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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IBM PS/1
Computers
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PS/1 /media/museum/photos/ibm_ps1_1s.jpg /companies/ibm IBM
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IBM PS/1 Thanks to IBM for this picture /media/museum/photos/ibm_ps1_1.jpg
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IBM PS/1 EXPLAINED Thanks to Kia Purity for this picture /media/museum/photos/ibm_ps1_explained.jpg
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FRONT Thanks to Kia Purity for this picture /media/museum/photos/ibm_ps1_front-scheme_1.jpg
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BACK Thanks to Kia Purity for this picture /media/museum/photos/ibm_ps1_back_1.jpg
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EXPANDED WITH A 5.25'' DISK DRIVE Thanks to Kia Purity for this picture /media/museum/photos/ibm_ps1_expanded.jpg
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BOOT SCREEN / MENU Thanks to Kia Purity for this picture /media/museum/photos/ibm_ps1_boot-screen_1.jpg
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PS/1: a machine for the masses http://findarticles.com/p/articles/mi_m1563/is_n3_v9/ai_10392355 article from Home Office Computing, March, 1991 by Patrick Henry
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Silicium.org - PS/1 page http://www.silicium.org/ibm/ibm/ibmps1.htm Interesting comment
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Wikipedia http://en.wikipedia.org/wiki/IBM_PS/1 PS/1 article
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HARDWARE MAINTENANCE SERVICE FOR IBM PS/1 null /media/museum/docs/couvs/ibm_ps1_hardware-maintenance-manual2.jpg **HARDWARE MAINTENANCE SERVICE FOR IBM PS/1**\ written by IBM  compiled/archived by Rãzvan Corneliu C.R. VILT\  type of document : Online reader **... READ THE ONLINE VERSION BY CLICKING BELOW :**
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PS/1 TV commercial https://www.youtube.com/watch?v=QNQqTA9Pmb8 Length: 2 min 31 s
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/museum/amstrad-ppc-512-640
/museum/ibm-pc-at
/museum/ibm-pc-model-5150
/museum/ibm-pc-portable-model-5155
/museum/ibm-pc-xt-286
/museum/ibm-pc-xt-model-5160
/museum/micronique-hector-xt
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https://web.archive.org/web/20230531222407/http://www.old-computers.com/museum/computer.asp?c=1274 2023-05-31

Please help us improve this description by sending us more info!

The PS/1 was IBM's return to the home computing market. It was the successor to the IBM PCjr, although it was compatible with IBM's bussines systems. The PS/1 was a propriatary system at first, but standard components were used later on. The later models included "Rapid Resume" a standby feature.

The system uses a LPX form factor (layout). Everything was built into the motherboard and had a four expansion slots of 16bit ISA but on a riser card. The memory was 72pin simms.

For the 486SX model for example, the CPU is integrated onto the motherboard but there is a socket3 that is empty. Apparently it is possible to put in another 486 CPU and the system disables the built-in CPU, which is not possible with the 386 model.

The software was Windows 3.1 and MS-DOS 6.2 on these systems. There is a bootloader from IBM that let you select ether to boot into DOS or Windows.

Contributors : Nick, Leland

We need more info about this console ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.