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PS/1 - 2155 D53/G52/G72/G82/P74/P84/ S50/S70/S80/W48/W67/W77/Z33 System Information
Applicable to: United States
PS/1 - 2155 Local Bus Video System Information
2155 System Architecture
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Consultant |
G52 |
G72 |
G82 |
Z33 |
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Expert |
S50 |
S70 |
S80 | |
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Essential |
W48 |
W67 |
W77 | |
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Processor |
486SX/25 |
486DX/33 |
486DX2/50 |
486DX/33 |
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Cache / Max |
0 / 128 KB |
128 / 256 KB |
128 / 256 KB |
128 / 256 KB |
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Video Chipset |
CL-GD5424 |
CL-GD5426 |
CL-GD5426 |
CL-GD5426 |
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VRAM / Max |
512KB/512KB |
1MB/1MB |
1MB/1MB |
1MB/1MB |
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Disk Drives |
3.5"/5.25" |
3.5"/5.25" |
3.5"/5.25" |
3.5"/5.25" |
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Slots (T/O) |
5 / 4 |
5 / 4 |
5 / 4 |
5 / 4 |
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Hard Drive |
170 MB |
211 MB |
250 MB |
340 MB |
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RAM / Max |
4 MB/32 MB |
4 MB/64MB |
4 MB/64 MB |
4 MB/32 MB |
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Advisor |
P74 |
P84 | |
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Disney |
D53 | ||
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Processor |
486SX/25 |
486DX/33 |
486DX2/50 |
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Cache / Max |
0 / 128 KB |
128 / 256 KB |
128 / 256 KB |
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Video Chipset |
CL-GD5424 |
CL-GD5426 |
CL-GD5426 |
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VRAM / Max |
512KB/512KB |
1MB/1MB |
1MB/1MB |
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Disk Drives |
3.5"/5.25" |
3.5"/5.25" |
3.5"/5.25" |
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Slots (T/O) |
5 / 4 |
5 / 4 |
5 / 4 |
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Hard Drive |
129 MB |
250 MB |
340 MB |
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RAM / Max |
4 MB/32 MB |
4 MB/64 MB |
4 MB/64 MB |
To upgrade from 128KB cache to 256KB, you need to add four 28-pin modules (32K x 8, 25ns SRAM) and replace the existing TAG module with one 28-pin TAG (32K x 8, 20ns SRAM).
To upgrade from 0KB cache to 128KB or 256KB, you need to add either 4 (for 128KB) or 8 (for 256KB) 28-pin modules (32K x 8, 25ns). You also need to add a TAG module (32K x 8, 20 ns SRAM for 256KB or 8K x 8, 20 ns SRAM for 128KB)
Cache memory jumpers are preset at the factory for 0/128KB of cache. If you are installing 256KB, reset the jumpers by moving them forward to cover the two jumper pins.
Regular system memory is upgraded with Industry Standard 72-pin 36-bit parity SIMM chips. Each socket can support a 2, 4, 8 or 16 MB SIMM.
All machines, except for the 2155D53, had a data/fax modem with 2400bps send/receive on the data side and 9600bps send and 4800bps receive capability on the fax side. The 2155D53 has a 2400bps data modem with no fax capabilities. These modems are Hayes compatible and were configured at the factory for COM1.
Video drivers for these machines are available on IBM's FTP site
You can download the Windows 3.1 driver for the CL-GD5426 chipset is at
ftp://ftp.pc.ibm.com/pub/pccbbs/ps1/c5426_28.exe
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Model |
CPU |
Upgrade Processor |
EPROM FRU |
Installation Notes |
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2155G52 |
SX25 |
487SX, P23T-50 |
J23: 1-2, J24: 1-2, J25: 2-3 | |
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2155S50 |
SX25 |
487SX, P23T-50 |
J23: 1-2, J24: 1-2, J25: 2-3 | |
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2155W48 |
SX25 |
487SX, P23T-50 |
J23: 1-2, J24: 1-2, J25: 2-3 | |
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2155G72 |
DX33 |
P23T-66, P24T-83 |
07H0997 |
J23: 1-2, J24: 1-2, |
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2155W67 |
DX33 |
P23T-66, P24T-83 |
07H0997 |
J23: 1-2, J24: 1-2, |
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2155G82 |
DX2-50 |
P24T-63 |
07H0997 |
J23: 1-2, J24: 1-2, J25: 2-3 |
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2155S80 |
DX2-50 |
P24T-63 |
07H0997 |
J23: 1-2, J24: 1-2, J25: 2-3 |
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2155W77 |
DX2-50 |
P24T-63 |
07H0997 |
J23: 1-2, J24: 1-2, J25: 2-3 |
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2155P74 |
DX33 |
P23T-66, P24T-83 |
07H0997 |
J23: 1-2, J24: 1-2, |
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2155P84 |
DX2-50 |
P24T-63 |
07H0997 |
J23: 1-2, J24: 1-2, J25: 2-3 |
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2155D53 |
SX25 |
487SX, P23T-50 |
J23: 1-2, J24: 1-2, J25: 2-3 | |
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2155Z33 |
DX33 |
P23T-66, P24T-83 |
07H0997 |
J23: 1-2, J24: 1-2, |
The 487SX indicates the Intel 487SX math coprocessor. The P23T-50 or P23T-66 indicates the Intel 486 Overdrive Processor (50 or 66 Mhz). The P24T-63 or P24T-83 indicates the Intel Pentium Overdrive Processor (63 or 83 Mhz). If an EPROM FRU is listed, it is only required for the Pentium Overdrive processor upgrade. Under installation notes, JXX denotes a jumper and X-X denotes its position (J23: 1-2 means Jumper 23 needs to be in the 1-2 position).
These are the only processor upgrades supported by IBM for these machines.
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. All of these options assume you have sufficient room inside of your case (slots and/or drive bays), please check this before purchasing any options. It is also advisable to check with the option's manufacturer as to the minimum system requirements for their product.
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.
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Search Keywords |
PS/1, 2155 | |
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Hint Category |
Technical Specifications | |
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Date Created |
04-03-98 | |
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Last Updated |
19-02-99 | |
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Revision Date |
19-02-2000 | |
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Brand |
IBM Aptiva | |
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Product Family |
PS/1 | |
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Machine Type |
2155 | |
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Model |
D53; G52; G72; G82; P74; P84; S50; S70; S80; W48; W67; W77; Z33 | |
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TypeModel |
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Retain Tip (if applicable) |
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