IBM PS/1

Source: Wikipedia, the free encyclopedia.
PS/1
Also known asPS/1000 (Europe)
TypePersonal computer
Release date1990
Discontinued1994
PredecessorPCjr
SuccessorAptiva
RelatedPS/2

The PS/1 (known in some European countries as the PS/1000[1]: 95 ) is a brand for a line of personal computers that marked IBM's return to the home market in 1990, five years after the IBM PCjr. It was replaced by the IBM Aptiva in September 1994.

Position among IBM's PC brands

IBM PS/1 2168

The PS/1 line was created for new computer users and was sold in consumer electronics stores alongside comparable offerings from Compaq, Hewlett-Packard, Packard Bell, and others. American PS/1 models came with a modem installed so users could access online IBM help services, which were provided by partnerships with Prodigy and Quantum.

Like the PCjr, the PS/1's name suggested a more limited machine than IBM's business line, the

ROM with IBM's PC DOS and a graphical shell, however the system was compatible with other DOS implementations and the shell could be installed on the hard drive. Later models included a feature called "Rapid Resume"[2] which gave the computers the ability to go into standby mode as well as a hibernation
function. There were several form factors used during the PS/1's production, with the 2133 and 2155 cases used for several model years while the 2168 tower case was offered later in later models of the PS/1 lineup:

Models

IBM PS/1 (model 2011)
MHz
Memory512 KB ~ 2.5 MB
IBM PS/1 (model 2121)
Release date1992
Discontinued1993
Operating systemPC DOS 4.01 (in ROM)
CPUIntel 80386SX @ 16 MHz ~ 20 MHz
Memory2 MB ~ 6 MB

Models 2011

The original PS/1 (Model 2011), based on a 10 MHz

CPU, was designed to be easy to set up and use. It featured 512 KB of on-board memory (expandable to 1 MB or 2.5 MB with proprietary memory modules), built-in modem (in American models only) and an optional 30 MB or 40 MB hard disk. IBM also released a 5.25" disk drive unit, a $169 ISA Adapter Card Unit (ACU) [3] to install third-party expansion cards, and a $995 CD-ROM drive, based on a Western Digital SCSI chip, that fit underneath the case.[4] Some of the lower-end PS/1 models suffered from very limited expansion capabilities, since they lacked standard ISA
expansion slots.

Model 2121

The 2121 series computers used the same form factor as the 2011 series, but included up to two ISA slots inside the case. Memory could be expanded from 2 MB to 6 MB using a proprietary 4 MB memory module. The higher-end 2121 featured an

Intel 80386
SX processor running at 16 or 20 MHz.

The 2121 series PS/1 computers can be split into the following major hardware categories:[4][5]

Model US List MB FRU
CPU
 ISA Slots
RAM
VRAM
 Hard-Drive Serial / Modem
2121-C42 $1,699 92F9690 Intel 80386SX @ 16 MHz 0 2 MB 256 KB 95F4720 (40 MB IDE) 2400 baud modem
2121-B82 $2,199 92F9690 Intel 80386SX @ 16 MHz 2 2 MB 256 KB 92F9943 (80 MB IDE) 2400 baud modem
2121-C92 ? ? Intel 80386SX @ 16 MHz 0 2 MB 256 KB 129 MB IDE 2400 baud modem
2121-G42 ? 93F2184 Intel 80386SX @ 20 MHz 0 2 MB 256 KB 40 MB IDE 2400 baud modem
2121-A82 ? ? Intel 80386SX @ 20 MHz 2 2 MB 256 KB 40 MB IDE 2400 baud modem
2121-S92 ? ? Intel 80386SX @ 20 MHz 0 2 MB 256 KB 129 MB IDE 2400 baud modem
2121-M82 ? ? Intel 80386SX @ 20 MHz 2 2 MB 256 KB 80 MB IDE 2400 baud modem
2121-A62 ? ? ? 2 ? 256 KB 56F8863 (160 MB IDE) 2400 baud modem
2121-A92 ? ? ? ? ? 256 KB IDE serial port
2121-A94 ? ? Intel 80386SX @ 20 MHz 2 6 MB 256 KB 129 MB IDE 2400 baud modem

Monitors: IBM made the decision to put the

Amstrad 1512 years earlier). Some models were sold with greyscale VGA monitors. However, some hobbyists could manage to remap the pinouts
to allow for third-party monitors.

"DOS in ROM": Similar to a few

hard drive. The ROM disk would then load a "4-quad" screen which allowed users to access help, rapidly launch pre-installed software, connect online, and access files on the hard drive. It was possible to have the computer boot from the hard drive if the operating system was upgraded, and IBM provided a DOS 6.22-compatible version of the "4-quad" program that could be launched from the hard drive if users wished to continue using it.[6]

Model 2133

IBM PS/1 (model 2133)
Release date1992
Discontinued1993
80486DX2
@ 50 MHz
Memory2 MB ~ 16 MB (2-4 MB on-board)

The 2133 series PS/1 computers can be split into the following major hardware categories:[7][8]

Model MB FRU CPU RAM SIMM Video chip VRAM Hard-Drive Notes
2133-711 93F2397 Intel 80386SX @ 25 MHz 2 MB 2×72 Pin FPM Cirrus CL-GD5410 256 KB 59G9567 (85 MB IDE)
2133-811 Intel 80386SX @ 25 MHz 4 MB 85 MB IDE
2133-13 ? Intel 80386SX @ 25 MHz 2 MB 2x72 Pin FPM 256 KB ?
2133-W13 Intel 80386SX @ 25 MHz 2 MB 129 MB IDE
2133-13T 65G3766 Intel 80486SX @ 25 MHz 4 MB 2×72 Pin FPM 256 KB 93F2329 (129 MB IDE)
2133-?43 34G1885 Intel 80486SX @ 20 MHz 4 MB 2×30 Pin FPM 512 KB 93F2329 (129 MB IDE)
2133-?50 34G1848 Intel 80486SX @ 25 MHz 4 MB 2×30 Pin FPM 512 KB 93F2329 (129 MB IDE)
2133-?53 34G1848 Intel 80486SX @ 25 MHz 4 MB 2×30 Pin FPM 512 KB 93F2329 (129 MB IDE)
2133-652 Intel 80486SX @ 33 MHz 4 MB 4×72 Pin FPM Cirrus CL-GD5424 512KB 84G3927 (171 MB IDE)
2133-575 Intel 80486DX @ 33 MHz 4 MB 4×72 Pin FPM 512 KB 170 MB IDE
2133-594 Intel 80486DX2 @ 66 MHz 4 MB 4×72 Pin FPM 512 KB 253 MB IDE
2133-E11 Intel 80386SX @ 25 MHz 2 MB 2×72 Pin FPM Cirrus CL-GD5424 512 KB 85 MB IDE Canada models, English model
2133-F11 Intel 80386SX @ 25 MHz 2 MB 2×72 Pin FPM Cirrus CL-GD5424 512 KB 85 MB IDE Canada models, French model
2133-E43 Intel 80486SX @ 20 MHz 2 MB 8×30 Pin FPM Tseng ET4000 512 KB 129 MB IDE Canada models, English model
2133-F43 Intel 80486SX @ 20 MHz 2 MB 8×30 Pin FPM Tseng ET4000 512 KB 129 MB IDE Canada models, French model
2133-E53 Intel 80486SX @ 25 MHz 2 MB 8×30 Pin FPM Tseng ET4000 512 KB 129 MB IDE Canada models, English model
2133-F53 Intel 80486SX @ 25 MHz 2 MB 8×30 Pin FPM Tseng ET4000 512 KB 129 MB IDE Canada models, French model

Post-"DOS in ROM" models

IBM PS/1 (model 2155)
Release date1993
Discontinued1994
Operating systemPC DOS 6.00 / Windows 3.1
CPUIntel 80386SX @ 25 MHz, Intel 80486SX @ 20-33 MHz, Intel 80486DX @ 33 MHz, Intel 80486DX2 @ 25-50 MHz[9]
Memory2 MB ~ 64 MB

On May 11, 1993, IBM introduced a "new generation" of the PS/1 line.

PC DOS or OS/2
. An early 2133 model did come preloaded with OS/2 2.1. This was because IBM targeted OS/2 for high-end computing machines with more power.

Discontinuation

The PS/1 line was discontinued in 1994 and replaced with the Aptiva line, which was architecturally very similar to the later models of the PS/1, but with a more marketing-friendly name. Aptivas were sold in the United States until early 2000, when price pressures made the line unprofitable and IBM withdrew from the retail desktop PC market entirely.

Timeline

Timeline of the IBM Personal Computer
IBM ThinkCentreIBM NetVistaIBM Palm Top PC 110IBM PC SeriesIBM AptivaIBM PS/ValuePointThinkPadEduQuestIBM PS/noteAmbra Computer CorporationIBM PCradioIBM PS/1IBM Industrial SystemIBM PS/55IBM PS/2IBM Personal Computer XT 286IBM PC ConvertibleIBM JXIBM Personal Computer AT/370IBM Personal Computer ATIBM Industrial ComputerIBM PCjrIBM Portable Personal ComputerIBM Personal Computer XT/370IBM 3270 PCIBM Personal Computer XTIBM 5550IBM Personal ComputerIBM System/23 DatamasterIBM 5120IBM 5110IBM 5100
Asterisk (*) denotes a model released in Japan only

References

  1. ^ Sedlbauer, Johann (May 1994). "Srovnání PC třídy 486" [Comparison of 486-class PCs]. Chip. 17 (21): 90–111 – via the Internet Archive.
  2. ISSN 0362-4331
    . Retrieved 2017-07-01.
  3. ISSN 0199-6649
    .
  4. ^
    ISSN 0888-8507
    .
  5. ^ PS/1 - 2121 System Information, Document ID: MWER-3S2UQG
  6. ^ PS/1 - After installing MS-DOS 6.22, can I restore my 4-quadrant menu screen? Document ID: DETR-3UFPEY
  7. ^ "PS/1 - 2133 18A/21C/23C/52D (SL-B) Service parts". IBM. 1999-03-08. Retrieved 2008-06-14.
  8. ^ "Hardware Maintenance Service for PS1 computer (Machine Types 2133, 2155, and 2168)". IBM Corporation. March 1993. 63G2028. {{cite journal}}: Cite journal requires |journal= (help).
  9. ^ Hardware Maintenance Service for PS/1. IBM Corporation. March 1993. Retrieved 17 January 2024.
  10. ISSN 0362-4331
    . Retrieved 2017-07-01.

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=IBM_PS/1&oldid=1217626800"