Thread: PM486GA VESA Motherboard User Manual

- BIOS ID string ? <--- please send yours in
- 2-72 pin SIMM slots (1-256meg FPM DRAM)
- 4-30 pin SIMM slots
- 3-32bit VESA slots
- 6-16bit ISA slots
- 1-8bit XT slots
- 64k-1024k CACHE support in 8-32pin sockets + 1 TAG RAM socket
- AMI/PHOENIX Auto-Detect BIOS
- Green PC Connector
- ALI chipset
- Supports CPU voltages of: 3.3/3.45/5.0 volt
- ZIF CPU socket which supports these processors:
INTEL 80486SX/DX/DX2/DX4,P4S/P23S/P24S,Pentium OverDrive
CYRIX CX486(M6),CX486DX2(M7)
AMD AM486SX/DX/DX2
- Supports speeds of 25/33/40/50/66/80 MHz.
- Manufactured by: unknown


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

PM486GA VESA Motherboard

- BIOS ID string ???????????????????? (send yours in)
- 2-72 pin SIMM slots (1-256meg FPM DRAM)
- 4-30 pin SIMM slots
- 3-32bit VESA slots
- 6-16bit ISA slots
- 1-8bit XT slots
- 64k-1024k CACHE support in 8-32pin sockets + 1 TAG RAM socket
- AMI/PHOENIX Auto-Detect BIOS
- Green PC Connector
- ALI chipset
- Supports CPU voltages of: 3.3/3.45/5.0 volt
- ZIF CPU socket which supports these processors:
INTEL 80486SX/DX/DX2/DX4,P4S/P23S/P24S,Pentium OverDrive
CYRIX CX486(M6),CX486DX2(M7)
AMD AM486SX/DX/DX2
- Supports speeds of 25/33/40/50/66/80 MHz.
- Manufactured by: ????? unknown
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CONNECTIONS
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Purpose Location Purpose Location
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External battery J4 Turbo switch JP40
Green PC connector JP12 Speaker JP41
Ring in signal connector JP13 Power LED + keylock JP42
Reset switch JP38 32-bit VESA local bus slots SL1 - SL3
Turbo LED JP39
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USER CONFIGURABLE SETTINGS
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Function Jumper Position
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CMOS memory normal operation CN1 Closed
CMOS memory clear CN1 Open
Factory configured - do not alter JP1 N/A
Monitor type select color JP7 pins 2 + 3
Monitor type select monochrome JP7 pins 1 + 2
Green PC enabled JP10 Closed
Green PC disabled JP10 Open
ADS speed select > 33MHz JP43 pins 2 + 3
ADS speed select <= 33MHz JP43 pins 1 + 2
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DRAM CONFIGURATION
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Size Bank 0 Bank 1 Bank 2
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1MB (4) 256K x 9 NONE NONE
1MB NONE (1) 256K x 36 NONE
2MB (4) 256K x 9 NONE (1) 256K x 36
2MB NONE (1) 256K x 36 (1) 256K x 36
4MB (4) 1M x 9 NONE NONE
4MB NONE (1) 1M x 36 NONE
5MB (4) 256K x 9 NONE (1) 1M x 36
5MB (4) 1M x 9 NONE (1) 256K x 36
5MB NONE (1) 1M x 36 (1) 256K x 36
5MB NONE (1) 256K x 36 (1) 1M x 36
8MB (4) 1M x 9 NONE (1) 1M x 36
8MB NONE (1) 1M x 36 (1) 1M x 36
8MB NONE (1) 2M x 36 NONE
9MB (4) 256K x 9 NONE (1) 2M x 36
9MB NONE (1) 256K x 36 (1) 2M x 36
9MB NONE (1) 2M x 36 (1) 256K x 36
12MB (4) 1M x 9 NONE (1) 2M x 36
12MB NONE (1) 1M x 36 (1) 2M x 36
12MB NONE (1) 2M x 36 (1) 1M x 36
16MB (4) 4M x 9 NONE NONE
16MB NONE (1) 4M x 36 NONE
17MB NONE (1) 256K x 36 (1) 4M x 36
17MB NONE (1) 4M x 36 (1) 256K x 36
20MB (4) 1M x 9 NONE (1) 4M x 36
20MB NONE (1) 1M x 36 (1) 4M x 36
20MB NONE (1) 4M x 36 (1) 1M x 36
20MB (4) 4M x 9 NONE (1) 1M x 36
24MB (4) 4M x 9 NONE (1) 2M x 36
24MB NONE (1) 4M x 36 (1) 2M x 36
24MB NONE (1) 2M x 36 (1) 4M x 36
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DRAM CONFIGURATION (CON'T)
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Size Bank 0 Bank 1 Bank 2
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32MB (4) 4M x 9 NONE (1) 4M x 36
32MB NONE (1) 4M x 36 (1) 4M x 36
64MB (4) 16M x 9 NONE NONE
65MB (4) 16M x 9 NONE (1) 256K x 36
68MB (4) 16M x 9 NONE (1) 1M x 36
72MB (4) 16M x 9 NONE (1) 2M x 36
80MB (4) 16M x 9 NONE (1) 4M x 36
128MB (4) 16M x 9 (1) 8M x 36 (1) 8M x 36
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DRAM JUMPER CONFIGURATION
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Type JP11A JP11B JP11C JP11D
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Double side SIMM 1+2,3+4 1 + 2 1 + 2 1 + 2
Single side SIMM 2 + 3 2 + 3 2 + 3 2 + 3
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CACHE CONFIGURATION
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Size Bank 0 Bank 1 TAG
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32KB (4) 8K x 8 NONE (1) 8K x 8
64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8
128KB (4) 32K x 8 NONE (1) 32K x 8
256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8
256KB (B) (4) 64K x 8 NONE (1) 32K x 8
512KB (4) 64K x 8 (4) 64K x 8 (1) 64K x 8
1MB (4) 128K x 8 (4) 128K x 8 (1) 128K x 8
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CACHE JUMPER CONFIGURATION
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Size JP16 JP17 JP18 JP30
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32KB 2 + 3 2 + 3 Open Open
64KB 1 + 2 1 + 2 Open 1 + 2
128KB 1 + 2 2 + 3 Closed 1 + 2, 3 + 4
256KB (A) 1 + 2 1 + 2 Closed 1 + 2, 3+4,5 + 6
256KB (B) 1 + 2 1 + 2 Closed 1 + 2, 3+4,5 + 6
512KB 1 + 2 1 + 2 Closed 1 + 2, 3+4,5 + 6
1MB 1 + 2 1 + 2 Closed 1 + 2, 3+4,5 + 6

CACHE JUMPER CONFIGURATION (CON'T)
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Size JP31 JP32 JP33
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32KB Open pins 1 + 2 closed Open
64KB Open pins 1 + 2 closed Open
128KB Open pins 1 + 2 closed Open
256KB (A) Open pins 1 + 2 closed Open
256KB (B) Open pins 1 + 2 closed 2 + 3 closed
512KB 1 + 2 2 + 3 closed 1 + 2 closed
1MB 1+2,3+4 pins 2 + 3 closed 1 + 2 closed
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CPU TYPE CONFIGURATION
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Type JP4 JP5 JP6 JP9 JP14
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AM486SX Open Open Open Open Open
80486SX Open Open Open Open Open
80487SX Open Open Open Open Open
CX486DX Open Open Closed 5 + 6 2 + 4
AM486DX-33 Open Open Open Open Open
AM486DX-40/50 Open Open Open Open Open
80486DX-33 Open Open Open Open Open
80486DX-40/50 Open Open Open Open Open
CX486DX2 Open Open Closed 5 + 6 2 + 4
AM486DX2 Open Open Open Open Open
80486DX2 Open Open Open Open Open
P4S Open Open Open Open 1 + 2
P23S Open Open Open Open 1 + 2
P24S Open Open Open Open 1 + 2
P24T Open Closed Open Open 1 + 2
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CPU TYPE CONFIGURATION (CON'T)
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Type JP15 JP19 JP20 JP21 JP22 JP23
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AM486SX Open Open 1 + 2 2 + 3 Open 1 + 2
80486SX Open Open 1 + 2 2 + 3 Open 1 + 2
80487SX Open 1 + 2 1 + 2 1 + 2 Open 2 + 3
CX486DX 2 + 4 Open 1 + 2 1 + 2 Open 1 + 2
AM486DX-33 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
AM486DX-40/50 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
80486DX-33 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
80486DX-40/50 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
CX486DX2 2 + 4 Open 1 + 2 1 + 2 Open 1 + 2
AM486DX2 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
80486DX2 Open 2 + 3 1 + 2 2 + 3 Open 2 + 3
P4S 1 + 2 2 + 3 1 + 2 1 + 2 Open 2 + 3
P23S 1 + 2 Open 1 + 2 1 + 2 Open 1 + 2
P24S 1 + 2 2 + 3 1 + 2 1 + 2 Open 2 + 3
P24T 1 + 2 1 + 2 2 + 3 1 + 2 Closed 2 + 3
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CPU TYPE CONFIGURATION (CON'T)
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Type JP24 JP25 JP26 JP27 JP28 JP29
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AM486SX Open Open Closed Open Closed Open
80486SX Open Open Closed Open Closed Open
80487SX Open Open Closed Open Closed Open
CX486DX 1 + 2 Closed Open Open Closed Closed
AM486DX-33 Open Open Closed Open Closed Open
AM486DX-40/50 Open Open Closed Open Closed Closed
80486DX-33 Open Open Closed Open Closed Open
80486DX-40/50 Open Open Closed Open Closed Closed
CX486DX2 1 + 2 Closed Open Open Closed Open
AM486DX2 Open Open Closed Open Closed Open
80486DX2 Open Open Closed Open Closed Open
P4S 2 + 3 Open Closed Closed Closed Open
P23S 2 + 3 Open Closed Closed Closed Open
P24S 2 + 3 Open Closed Closed Closed Open
P24T 2 + 3 Open Closed Open Closed Open
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CPU TYPE CONFIGURATION
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Type JP9 JP28
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TI 486 pins 1 + 2, 5 + 6 closed N/A
IBM Blue Lightening pins 1 + 2, 3 + 4 closed N/A
CX486M6 N/A Open
Note: These are alternate jumper settings for the above CPU types.
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CPU SPEED CONFIGURATION
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Speed JP3 JP8 JP34 JP35
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25MHz pins 1 + 2 1 + 2, 5 + 6 1 + 2 1 + 2 closed
33MHz pins 1 + 2 1 + 2, 3 + 4 1 + 2 1 + 2 closed
40MHz pins 2 + 3 3 + 4, 5 + 6 2 + 3 2 + 3 closed
50iMHz pins 1 + 2 1 + 2, 5 + 6 1 + 2 1 + 2 closed
50MHz pins 2 + 3 1 + 2, 5 + 6 2 + 3 2 + 3 closed
66iMHz pins 1 + 2 1 + 2, 3 + 4 1 + 2 1 + 2 closed
80iMHz pins 2 + 3 3 + 4, 5 + 6 2 + 3 2 + 3 closed
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VL BUS WAIT STATE CONFIGURATION
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Wait states JP36
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0 wait states pins 1 + 2 closed
1 wait state pins 2 + 3 closed
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VL BUS SPEED CONFIGURATION
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CPU speed JP37
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<= 33MHz pins 2 + 3 closed
> 33MHz pins 1 + 2 closed
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GREEN PC CONFIGURATION
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Setting J5
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Reserved pins 1 + 2 closed
Chassis fan power pins 3 + 4 closed
Monitor power pins 5 + 6 closed
VGA H-synch pins 7 + 8 closed
VGA V-synch pins 9 + 10 closed
============================END OF DATA ON PM486GA===========================