Click Here to visit our Sponsor
The History of Computing The Magazine Have Fun there ! Buy goodies to support us
  Mistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine
Browse console museumBrowse pong museum









 

Ready prompt T-shirts!

see details
ZX81 T-shirts!

see details
ZX Spectrum T-shirts!

see details
Arcade cherry T-shirts!

see details
Spiral program T-shirts!

see details
Atari joystick T-shirts!

see details
Battle Zone T-shirts!

see details
Vectrex ship T-shirts!

see details
Moon Lander T-shirts!

see details
Competition Pro Joystick T-shirts!

see details
C64 maze generator T-shirts!

see details
Atari ST bombs T-shirts!

see details
Elite spaceship t-shirt T-shirts!

see details
Pak Pak Monster T-shirts!

see details
BASIC code T-shirts!

see details
Breakout T-shirts!

see details
Vector ship T-shirts!

see details
Pixel adventure T-shirts!

see details





I > IBM  > PS/1   


IBM
PS/1

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 computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to Old-Computers.com or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


 

Ok, so that last link didn''t work either. If you google this you will find it: www.zonadepruebas.com Restaurando y vitaminando un IBM PS/1 Model 2121. Sorry for the multiple posts.

          
Saturday 14th May 2022
Bill Henderson (USA)

I''m running an IBM PS/1 2121 now. I upgraded to a 486SX-33 as described at https://www-zonadepruebas-com.translate.goog/viewtopic.php?f$59$t$6184$sid$078a4ebc32f203e564c4e16dca108a4b$_x_tr_sl$es$_x_tr_tl$en$_x_tr_hl$en$_x_tr_pto$wapp. In addition to this, I was able to improve performance by using the SXL_Control_Util.zip utility at https://www.vogons.org/download/file.php?id$56580. My command line to enable caching is: cyrix.exe -f -b -xA000,64 dram 1300 (the -xA000,64 excludes video memory from caching, which was necessary for me to avoid graphical glitches). I was able to see a decent increase in performance by enabling cache.

          
Saturday 14th May 2022
Bill Henderson (USA)

My IBM PS/1 came with 8MB of ram using 30 pin simms, it also came with OS/2 2.0 where I could launch Windows 3.1 inside of it for some extreme slow fun. I want to say the price was closer to 2k near the end of 93.

Eventually upgraded the 483dx 33 to a amd/cyrix processor, upgraded the motherboard and the ram to 20MB 72pin, added a 28.8 and lots of other stuff before tossing it out

          
Monday 27th March 2017
Dennis

 

NAME  PS/1
MANUFACTURER  IBM
TYPE  Professional Computer
ORIGIN  U.S.A.
YEAR  1990
END OF PRODUCTION  1994
KEYBOARD  full stroke keyboard with numeric keypad and function keys
CPU  Original model: Intel 80286
Later models: 386sx, 486sx, 486dx, 486dx2
SPEED  Original model: 10 MHz
Later models: from 10 MHz to 66 MHz
RAM  Original model: 512 KB (max. 1 MB)
Later models: from 1 MB to 64 MB
GRAPHIC MODES  Original model: VGA modes
Later models: sVGA modes
I/O PORTS  Parallel port, ISA slots
BUILT IN MEDIA  3.5'' Floppy disc drive + optional hard disk depending models
OS  originally PC-DOS 4.01, later IBM-DOS
POWER SUPPLY  Power supply built-in
PERIPHERALS  printer, expansion unit, hard drives, 5.25'' disk drive, etc.
PRICE  Unknown




Please buy a t-shirt to support us !
Ready prompt
ZX Spectrum
ZX81
Arcade cherry
Spiral program
Atari joystick
Battle Zone
Vectrex ship
C64 maze generator
Moon Lander
Competition Pro Joystick
Atari ST bombs
Elite spaceship t-shirt
Commodore 64 prompt
Pak Pak Monster
Pixel Deer
BASIC code
Shooting gallery
3D Cubes
Pixel adventure
Breakout
Vector ship

Related Ebay auctions in real time - click to buy yours



see more IBM  PS/1 Ebay auctions !



 
Click here to go to the top of the page   
Contact us | members | about old-computers.com | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -