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Document ID: MWER-3TBKDH

PS/1 - 2133 18A/21C/23C/52D (SL-B) System Information

Applicable to: United States

PS/1 - 2133 (SL-B) System Information

2133 System Architecture

Model

2133 18A

2133 21C

2133 23C

2133 52D

Processor

486SX/33

486SX2/50

486SX2/50

486SX/33

Cache (Installed/Max)

N/A

N/A

N/A

N/A

Video Chipset

CL-5424

CL-5424

CL-5424

CL-5424

VRAM (Installed/Max)

512 KB / 1MB

512 KB / 1MB

512 KB / 1MB

512 KB / 1MB

Disk Drive

Combo*

Combo*

3.5"

Combo*

Hard Drive

170 MB

253 MB

253 MB

170 MB

System RAM / Max

4MB / 64MB

4MB / 64MB

4MB / 64MB

4MB / 64MB

Modem Speed

2400 bps

2400 bps

2400 bps

2400 bps


*The Combo drive integrates a 5.25" and a 3.5" diskette drive into a single 5.25" enclosure.
Cache denotes installed external cache, VRAM denotes installed video memory, System RAM denotes installed system memory, Max denotes maximum expandability.

Regular system memory is upgraded with 36-bit or 32-bit (parity or non-parity) industry standard 70ns 72-pin SIMM chips. If the machine has 2 SIMM sockets, it can handle up to a 32MB SIMM in each socket. If it has 4 SIMM sockets, it can handle up to a 16MB SIMM in each socket.

Video drivers for these machines are available on IBM's FTP site at ftp://ftp.pc.ibm.com/pub/pccbbs/ps1/c5422_24.exe and on our BBS at (919)248-3540.
The filename for the Cirrus Logic 5424 chipset (CL-5424) is C5422_24.EXE

To upgrade cache memory on machines that have that capability (see product matrix), you will need to add either 4 (in bank 1 for 128K) or 8 (in both banks for 256K) 28-pin 32K x 8, 25ns SRAM modules. You will also need to add the appropriate TAG chip (32K x 8, 20ns SRAM for 256K ; 8K x 8, 20ns SRAM for 128K). If you are adding 256K of cache, you will also need to move the cache jumpers as shown below.

All of these machines use a standard IDE controller. This interface should support any standard IDE device. Some Enhanced IDE (EIDE) devices (namely hard drives larger than 528MB) may be able to function with the use of disk overlay software, normally supplied by the drive manufacturer, but is not supported by IBM. Though EIDE CD-ROMs are not supported on these machines, a CD-ROM with it's own ISA interface controller should work. Any ISA card (CD-ROM controller, modem, SCSI card) added to these machines needs to be non-"Plug and Play" to help insure compatability.

Machines that are capable of video memory upgrades require a 40-pin ZIP DRAM module configured as 256K x 16, which gives an additional 512K of video memory.

Processor Upgrade Matrix

Model

CPU

Upgrade Processor

Installation Notes

2133 18A

SX33

487SX, P23T-66

J24: 2-3, J25: 1-2, J31: 2-3 for P23T-66
J24: 1-2, J25: 1-2, J31: 2-3 for 487SX

2133 21C

SX2/50

487SX

J24: 1-2, J25: 1-2, J31: 2-3

2133 23C

SX2/50

487SX

J24: 1-2, J25: 1-2, J31: 2-3

2133 52D

SX33

487SX, P23T-66

J24: 2-3, J25: 1-2, J31: 2-3 for P23T-66
J24: 1-2, J25: 1-2, J31: 2-3 for 487SX


The 487SX indicates the Intel 487SX math coprocessor. The P23T-66 indicates the Intel 486 Overdrive Processor (66 Mhz). Under installation notes (Jxx: y-z), Jxx denotes a jumper and y-z denotes its position. These are the only processor upgrades supported by IBM for these machines.

Phone Support for these machines is available from IBM on a fee basis over the IBM Club's 900# (1-900-555-2582). The first minute of this call is free, each additional minute is charged to your phone bill at a rate of $2.99/minute.

Search Keywords

PS/1, 2133

Hint Category

Technical Specifications

Date Created

07-04-98

Last Updated

19-02-99

Revision Date

19-02-2000

Brand

IBM Aptiva

Product Family

PS/1

Machine Type

2133

Model

18A; 21C; 23C; 52D

TypeModel

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