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# UNIDENTIFIED
MB-4D50AG
Processor CXM6/80486SX/CXM7/80486DX/80486DX2/P4S/P23S/P24S/Pentium
Overdrive
Processor 20/25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set ALI
Max. 128MB
Onboard
DRAM
Cache 64/128/256/512KB
BIOS Unidentified
Dimensions 250mm x 220mm
I/O 32-bit VESA local bus slots (2), 32-bit PCI slots (3),
Options green PC connector
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Green PC | JP6 |
| | | connector | |
| | | (monitor) | |
|------------------+----------+-------------------+----------|
| Speaker | J2 | Green PC | JP40 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Power LED & | J3 | Green PC | JP41 |
| keylock | | connector | |
|------------------+----------+-------------------+----------|
| Turbo switch | J4 | 32-bit VESA local | SL1 & |
| | | bus slots | SL2 |
|------------------+----------+-------------------+----------|
| Turbo LED | J5 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|------------------+----------+-------------------+----------|
| Reset switch | J6 | | |
|------------------------------------------------------------|
| Note: The location of JP6 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP37 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP38 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP38 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP39 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP39 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP42 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 512K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 512K x | NONE | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 512K x | NONE | (1) 512K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | (1) 1M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 512K x | NONE | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 512K x | NONE | (1) 2M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 2M x 36 | NONE | (1) 512K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 2M x 36 | NONE | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | NONE | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 256K x | (1) 4M x 36 | NONE | NONE |
| | 36 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 512K x | NONE | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 4M x 36 | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 256K x | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 512K x | (1) 512K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 256K x | (1) 1M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 256K x | (1) 4M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 1M x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 1M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | (1) 4M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 1M x 36 | (1) 4M x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 4M x 36 | (1) 256K x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 256K x | (1) 4M x 36 | (1) 1M x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 36 | NONE | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 4M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 256K x | (1) 1M x 36 | (1) 4M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 256K x | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 8M x 36 | NONE | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 512K x | NONE | (1) 8M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 8M x 36 | NONE | (1) 512K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 8M x 36 | NONE | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 1M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 37MB | (1) 256K x | (1) 4M x | (1) 1M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 37MB | (1) 256K x | (1) 4M x | (1) 4M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 2M x 36 | NONE | (1) 8M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 8M x 36 | NONE | (1) 2M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 8M x 36 | NONE | (1) 4M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 49MB | (1) 256K x | (1) 4M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | NONE | (1) 8M x | NONE |
| | | | 36 | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 512K x | (1) 512K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP3 | JP4 | JP5 |
|----------+----------+----------+---------+--------+--------|
| 64KB | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 128KB | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 256KB | 2 & 3 | 4 & 5 | 2 & 3 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 512KB | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP15 | JP16 | JP17 | JP18 | JP19 | JP20 |
|----------+--------+--------+-------+-------+-------+-------|
| CX M6 | Open | Open | 1 & 2 | Open |Closed | Open |
|----------+--------+--------+-------+-------+-------+-------|
| 80486SX | Open | Open | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| CX M7 | Closed | Open | 1 & 2 | Open |Closed |Closed |
|----------+--------+--------+-------+-------+-------+-------|
| AM486DXL | Closed | Open | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| 80486DX | Closed | Open | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| 80486DX2 | Closed | Open | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| P23S | Closed | Closed | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| P4S | Closed | Closed | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| P24S | Closed | Closed | 1 & 2 |Closed | Open | Open |
|----------+--------+--------+-------+-------+-------+-------|
| P24T | Closed | Open | 2 & 3 |Closed | Open |Closed |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. The |
|location of JP15 & JP16 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP21 | JP22 | JP23 | JP24 | JP25 | JP26 |
|----------+--------+--------+-------+-------+-------+-------|
| CX M6 | 1 & 2 | 2 & 3 | 4 & 5 | Open | 1 & 2 | 4 & 5 |
|----------+--------+--------+-------+-------+-------+-------|
| 80486SX | 1 & 2 | 1 & 2 | 2 & 4 | Open | Open | 2 & 4 |
|----------+--------+--------+-------+-------+-------+-------|
| CX M7 | 2 & 3 | 2 & 3 | 4 & 5 | Open | 1 & 2 | 4 & 5 |
|----------+--------+--------+-------+-------+-------+-------|
| AM486DXL | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | Open | 1 & 2 |
|----------+--------+--------+-------+-------+-------+-------|
| 80486DX | 2 & 3 | 1 & 2 | 2 & 4 | 2 & 3 | Open | 2 & 4 |
|----------+--------+--------+-------+-------+-------+-------|
| 80486DX2 | 2 & 3 | 1 & 2 | 2 & 4 | 2 & 3 | Open | 2 & 4 |
|----------+--------+--------+-------+-------+-------+-------|
| P23S | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+--------+--------+-------+-------+-------+-------|
| P4S | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+--------+--------+-------+-------+-------+-------|
| P24S | 1 & 2 | 2 & 3 | 2 & 3 | Open | 2 & 3 | 2 & 3 |
|----------+--------+--------+-------+-------+-------+-------|
| P24T | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (BIOS SETUP) |
|------------------------------------------------------------|
| Type | JP7 | JP8 | JP9 |
|----------+----------------+----------------+---------------|
| CX M6 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486SX | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| CX M7 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| AM486DXL | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CHIPSET SETUP) |
|------------------------------------------------------------|
| Type | JP27 | JP29 | JP30 | JP47 |
|------------+------------+------------+------------+--------|
| CX M6 (1x) | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | Open |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| CX M6 (2x) | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | Closed |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| 80486SX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | N/A |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| CX M7 (1x) | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | Open |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| CX M7 (2x) | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | Closed |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| AM486DXL | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | N/A |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | N/A |
| | closed | closed | closed | |
|------------+------------+------------+------------+--------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | N/A |
| | closed | closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP10 | JP11 | JP12 | JP13 | JP28 |
|----------+----------+----------+---------+--------+--------|
| 20MHz | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 25MHz | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 33MHz | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 40MHz | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 50iMHz | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 50MHz | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 66iMHz | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Speed | JP31 | JP32 | JP33 | JP34 | JP35 |
|----------+----------+----------+---------+--------+--------|
| 20MHz | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 25MHz | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 33MHz | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 40MHz | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 50iMHz | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 50MHz | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+----------+----------+---------+--------+--------|
| 66iMHz | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP46 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP45 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Type | JP36 | JP43 |
|--------------------+--------------------+------------------|
| EPROM | pins 1 & 2 closed | Open |
|--------------------+--------------------+------------------|
| Flash ROM | pins 2 & 3 closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION (INT A) |
|------------------------------------------------------------|
| IRQ | JP14 |
|----------------------------+-------------------------------|
| IRQ5 | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ9 | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| IRQ10 | pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION (INT B) |
|------------------------------------------------------------|
| IRQ | JP14 |
|----------------------------+-------------------------------|
| IRQ11 | pins 7 & 8 closed |
|----------------------------+-------------------------------|
| IRQ12 | pins 9 & 10 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION (INT C) |
|------------------------------------------------------------|
| IRQ | JP14 |
|----------------------------+-------------------------------|
| IRQ14 | pins 11 & 12 closed |
|----------------------------+-------------------------------|
| IRQ15 | pins 13 & 14 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION (INT D) |
|------------------------------------------------------------|
| Interrupt | JP14 |
|----------------------------+-------------------------------|
| INT4J | pins 17 & 18 closed |
+------------------------------------------------------------+