- BIOS ID String 40-0101-641291-00101111-060691-OPWBSX-F
- BIOS ID String X0-0100-001291-00101111-060692-OPTIAUTO-F
- 8-30 pin SIMM slots (1-32meg FPM DRAM)
- 5-16bit ISA slots
- 3-8bit XT slots
- 64K/128K/256K SRAM Cache in 8-28pin sockets + 2 TAG RAM sockets
- AMI 1992 Auto-Detect ROM Bios 486DX-OP-WBh-25/33/50-D3-ZZ
- OPTi 82C495 / 82C392 chipset
- Clock crystal OSC1 socketed near cpu
- 239pin PGA CPU socket which supports these processors:
INTEL 80487SX,80486SX,80486DX/DX2,ODP486SX
- Supports speeds of 20/25/33/40/50/66 MHz
- Manufactured by: TMC Research Corporation USA

==View or Print jumper settings using Fixedsys or New Courier fonts==

PAT48PM 486 Motherboard

- AMI BIOS ID string 40-0101-641291-00101111-060691-OPWBSX-F
- 8-30 pin SIMM slots (1-32meg FPM DRAM)
- 5-16bit ISA slots
- 3-8bit XT slots
- 64K/128K/256K SRAM Cache in 8-28pin sockets + 2 TAG RAM sockets
- AMI 1992 Auto-Detect Bios
- OPTi 82C495 / 82C392 chipset
- Clock crystal OSC1 socketed near cpu
- 239pin PGA CPU socket which supports these processors:
INTEL 80487SX,80486SX,80486DX/DX2,ODP486SX
- Supports speeds of 20/25/33/40/50/66 MHz
- Manufactured by: TMC Research Corporation USA


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CONNECTIONS
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Purpose Location Purpose Location
-----------------------------------------------------------------------------------
Speaker J1 pins 1 - 4 IDE LED in J1 pins 10 + 20
Turbo switch J1 pins 7 + 17 Turbo LED J1 pins 8 + 18
Reset switch J1 pins 9 + 19 Power LED + keylock J1 pins 11 - 15
IDE LED out J2 External battery J4

-----------------------------------------------------------------------------------
USER CONFIGURABLE SETTINGS
-----------------------------------------------------------------------------------
Function Jumper Position
-----------------------------------------------------------------------------------
* CMOS normal using internal battery JP1 pins 2 + 3 closed
CMOS normal using external battery JP1 Open
CMOS memory clear JP1 pins 1 + 2 closed
* Bus speed select CLKIN/4 JP2 Open
Bus speed select CLKIN/6 JP2 Closed
* Monitor type select color JP3 Closed
Monitor type select monochrome JP3 Open
* CPU speed (CLKIN) select iOSC/1 JP4 pins 1 + 2 closed
CPU speed (CLKIN) select iOSC/2 JP4 pins 2 + 3 closed

-----------------------------------------------------------------------------------
DRAM CONFIGURATION
-----------------------------------------------------------------------------------
Size Bank 0 Bank 1
-----------------------------------------------------------------------------------
1MB (4) 256K x 9 NONE
2MB (4) 256K x 9 (4) 256K x 9
4MB (4) 1M x 9 NONE
5MB (4) 256K x 9 (4) 1M x 9
8MB (4) 1M x 9 (4) 1M x 9
16MB (4) 4M x 9 NONE
20MB (4) 4M x 9 (4) 1M x 9
32MB (4) 4M x 9 (4) 4M x 9

-----------------------------------------------------------------------------------
CACHE CONFIGURATION
-----------------------------------------------------------------------------------
Size Bank 0 Bank 1 TAG (U41) TAG (U42) Resistor Installed
-----------------------------------------------------------------------------------
64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 4K x 1 RND
64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 16K x 1 RND
64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 64K x 1 RND
128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 16K x 1 RNE
128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 64K x 1 RNE
256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8(1) 16K x 1 RNF
256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8(1) 64K x 1 RNF

-----------------------------------------------------------------------------------
CPU TYPE CONFIGURATION
-----------------------------------------------------------------------------------
Type RNA RNB RNC
-----------------------------------------------------------------------------------
80486SX Not installed Not installed Installed
80487SX Not installed Installed Not installed
ODP486SX Not installed Installed Not installed
80486DX Installed Not installed Not installed
80486DX2 Installed Not installed Not installed

===============================END OF DATA ON PAT48PM===============================

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