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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-586AM
Processor CXM1/Pentium
Processor 75/90/100/120/133/150MHz
Speed
Chip Set UMC
Max. Onboard 128MB
DRAM
Cache 256/512/1024KB
BIOS Award
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2), parallel
port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN3 | External battery | J10 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN5 | Chassis fan | J14 |
| | | power | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN6 | Green PC | JP19 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| Parallel port | CN7 | Speaker | JP20 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN8 | Reset switch | JP21 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN9 | Turbo switch | JP22 |
|-------------------+----------+------------------+----------|
| Power LED & | CN12 | 32-bit PCI slots | PC1 - |
| keylock | | | PC4 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J8 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Green PC/turbo | J9 | | |
| LED | | | |
|------------------------------------------------------------|
| Note: The location of pin 1 on CN6 - CN9 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+--------+----------------|
| » | CMOS memory normal operation | J10 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+--------+----------------|
| | CMOS memory clear | J10 | Open |
|---+------------------------------+--------+----------------|
| | Battery type select external | J10 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 512K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 2M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 66MB | (2) 8M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG | SL1 |
|-----------+--------------+-----------------+---------------|
| 256KB (A) | (8) 32K x 8 | (1) 8K or (1) | Not installed |
| | | 32K x 8 | |
|-----------+--------------+-----------------+---------------|
| 256KB (B) | NONE | (1) 8K or (1) | Installed |
| | | 32K x 8 | |
|-----------+--------------+-----------------+---------------|
| 512KB (A) | (8) 64K x 8 | (1) 16K or (1) | Not installed |
| | | 32K x 8 | |
|-----------+--------------+-----------------+---------------|
| 512KB (B) | NONE | (1) 16K or (1) | Installed |
| | | 32K x 8 | |
|-----------+--------------+-----------------+---------------|
| 1MB | (8) 128K x 8 | (1) 32K x 8 | Not installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP15 |
|----------------------------+-------------------------------|
| 256KB (A) | Open |
|----------------------------+-------------------------------|
| 256KB (B) | Open |
|----------------------------+-------------------------------|
| 512KB (A) | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 512KB (B) | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 1MB | pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 |
|------------------------------+-----------------------------|
| CXM1 | Closed |
|------------------------------+-----------------------------|
| Pentium | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP11 |
|--------+-------------------------+-------------------------|
| 75MHz | pins 1 & 2 closed | Open |
|--------+-------------------------+-------------------------|
| 90MHz | pins 3 & 4 closed | Open |
|--------+-------------------------+-------------------------|
| 100MHz | pins 1 & 2, 5 & 6 | Open |
| | closed | |
|--------+-------------------------+-------------------------|
| 120MHz | pins 3 & 4 closed | pins 1 & 2 closed |
|--------+-------------------------+-------------------------|
| 133MHz | pins 1 & 2, 5 & 6 | pins 1 & 2, 3 & 4 |
| | closed | closed |
|--------+-------------------------+-------------------------|
| 150MHz | pins 3 & 4 closed | pins 1 & 2 closed |
+------------------------------------------------------------+