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PM486PU-S3 PCI Motherboard
- BIOS ID string UMC-881/886A - 2A4X5P6CC-00
- 2-72 pin SIMM slots (1-64meg FPM DRAM)
- 3-32bit PCI Bus slots
- 4-16bit ISA slots
- 128k-512k CACHE support in 4-28pin sockets + 1 TAG RAM socket
- AMI 486DX ISA BIOS 1993 AC6278578
- Supports LBA Mode Control + Large Disk DOS Compatibility.
- Green PC Connector
- external 3.6 battery not included
- UMC UM8881K + UM8886BF // UMC-881/886A chipset
- Supports 3.3/3.45/4.0/5.0 volt CPU's.
- 237pin ZIF CPU socket 2 which supports these processors:
INTEL 80486SX/SX2,80486DX/DX2/DX4,P24T,P24D
CYRIX CX486S(M6),CX486DX/DX2(M7),CX486DX4,CXM1
AMD AM486DX/DX2/DX4
UMC GREEN CPU U5S-SUPER
- Supports speeds of 20/25/33/40/50/66/75/80/100 MHz.
- 32bit Bus master for 2 IDE interfaces supporting 4 IDE devices.
- Multi-I/O chip supports 2 - 16550 Fast UART serial ports
1 - parallel port with EPP + ECP, 1 - floppy disk interface.
- Manufactured by: PROTECH
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CONNECTIONS
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Purpose Location Purpose Location
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External battery CN1 Green PC connector JP1
Serial port 2 CN2 Turbo switch JP2
Serial port 1 CN3 Turbo LED JP3
Parallel port CN4 Reset switch JP4
Floppy interface CN5 Speaker JP5
IDE interface 2 CN6 Power LED + keylock JP6
IDE interface 1 CN7 2-bit PCI slots PC1 - PC3
IDE interface LED J1
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DRAM CONFIGURATION
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Size Bank 0 Bank 1
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1MB (1) 256K x 36 NONE
2MB (1) 256K x 36 (1) 256K x 36
2MB (1) 512K x 36 NONE
3MB (1) 256K x 36 (1) 512K x 36
4MB (1) 512K x 36 (1) 512K x 36
4MB (1) 1M x 36 NONE
5MB (1) 256K x 36 (1) 1M x 36
6MB (1) 512K x 36 (1) 1M x 36
8MB (1) 1M x 36 (1) 1M x 36
8MB (1) 2M x 36 NONE
10MB (1) 512K x 36 (1) 2M x 36
12MB (1) 1M x 36 (1) 2M x 36
16MB (1) 2M x 36 (1) 2M x 36
20MB (1) 1M x 36 (1) 4M x 36
24MB (1) 2M x 36 (1) 4M x 36
32MB (1) 4M x 36 (1) 4M x 36
32MB (1) 8m x 36 NONE
36MB (1) 1M x 36 (1) 8M x 36
40MB (1) 2M x 36 (1) 8M x 36
48MB (1) 4M x 36 (1) 8M x 36
64MB (1) 8M x 36 (1) 8M x 36
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CACHE CONFIGURATION
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Size Bank 0 TAG
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128KB (4) 32K x 8 (1) 8K or (1) 32K x 8
256KB (4) 64K x 8 (1) 32K x 8
512KB (4) 128K x 8 (1) 32K x 8
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CACHE JUMPER CONFIGURATION
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Size J8
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128KB Open
256KB pins 1+2 closed
512KB pins 1+2, 3+4 closed
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CPU TYPE CONFIGURATION
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Type J2 J3 J5 J6 J7
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CX486SX 2+3 1+2 Open 1+2,3+4 3+4
UMC486SX 1+2 2+3 Open Open 1+2
80486SX 1+2 1+2 Open 2+3,4+5 3+4
CX486DX 2+3 1+2 Open 1+2,3+4 3+4
AM486DX 1+2 2+3 Open Open 1+2
80486DX 1+2 1+2 Open 2+3,4+5 3+4
CX486DX2 2+3 1+2 Open 1+2,3+4 3+4
AM486DX2 1+2 2+3 2+3 Open 1+2
80486DX2 1+2 1+2 Open 2+3,4+5 3+4
CX486DX4 2+3 1+2 Open 1+2,3+4 3+4
AM486DX4 1+2 2+3 Open Open 1+2
AM486DX4(WB) 1+2 2+3 2+3 Open 1+2
80486DX4 1+2 1+2 Open 2+3,4+5 3+4
P24D 1+2 1+2 Open 2+3,4+5 3+4
P24T 1+2 1+2 Open 2+3,4+5 3+4,5+6
CXM1 1+2 1+2 Open 2+3,4+5 3+4
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CPU TYPE CONFIGURATION (CON'T)
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Type J9 J10 J12 J13 J14
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CX486SX Open 2+3 Open Open Open
UMC486SX 1+2,3+4 3+4 Open Open Open
80486SX Open Open Open Open Open
CX486DX 3+4 2+3 Open Open Open
AM486DX 1+2,3+4 3+4 Open Open Open
80486DX 3+4 Open Open Open Open
CX486DX2 3+4 2+3 Open Open Open
AM486DX2 1+2,3+4 3+4 Open Open Open
80486DX2 3+4 Open Open Open Open
CX486DX4 3+4 2+3 Open Open Open
AM486DX4 1+2,3+4 3+4 Open Open Open
AM486DX4(WB) 1+2,3+4 3+4 Open Open Open
80486DX4 3+4 Open Open Open Open
P24D 3+4 Open Closed Closed Closed
P24T 2+3 1+2 Open Open Open
CXM1 3+4 Open Closed Closed Closed
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CPU TYPE CONFIGURATION (CON'T)
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Type J15 J16 J17 J18 J19 J21
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CX486SX Open 2+3 1+ 2 1+2 2+3 2+3
UMC486SX Open Open Open 2+3 Open 2+3
80486SX Open 1+2 Open 1+2 Open 2+3
CX486DX Open 2+3 1+ 2 1+2 2+3 1+2,3+4
AM486DX Open Open Open 2+3 Open 1+2,3+4
80486DX Open 1+2 Open 1+2 Open 1+2,3+4
CX486DX2 Open 2+3 1+ 2 1+2 2+3 1+2,3+4
AM486DX2 Open Open Open 2+3 Open 1+2,3+4
80486DX2 Open 1+2 Open 1+2 Open 1+2,3+4
CX486DX4 Open 2+3 1+ 2 1+2 2+3 1+2,3+4
AM486DX4 Open Open Open 2+3 Open 1+2,3+4
AM486DX4(WB) Open Open Open 2+3 Open 1+2,3+4
80486DX4 Open 1+2 Open 1+2 Open 1+2,3+4
P24D Open 1+2 Open 1+2 Open 1+2,3+4
P24T Open 1+2 2+ 3 1+2 1+2 1+2,3+4
CXM1 Open 1+2 Open 1+2 Open 1+2,3+4
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CPU SPEED CONFIGURATION
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Speed J24 pins 1+2 J24 pins 3+4 J24 pins 5+6
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20MHz Open Open Open
25MHz Open Open Closed
33MHz Closed Closed Closed
40MHz Open Closed Closed
50iMHz Open Open Closed
50MHz Closed Open Open
66iMHz Closed Closed Closed
75iMHz Open Open Closed
80MHz Open Closed Closed
100iMHz Closed Closed Closed
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CPU VOLTAGE CONFIGURATION
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Voltage J11
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3.3v pins 2 + 3 closed
3.45v pins 2 + 3 closed
4v pins 2 + 3 closed
5v pins 1 + 2 closed
=======================END OF DATA FOR PM486PU-S3=========================
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