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# GIGA-BYTE TECHNOLOGY CO., LTD.
GA-586ATS
Processor Pentium
Processor 75/90/100/120/133/150/166/180/200MHz
Speed
Chip Set Intel
Max. Onboard 128MB
DRAM
Cache 256/512KB
BIOS Award
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2), parallel
port, PS/2 mouse interface, serial ports (2),
cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | Speaker | J6 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Power LED & | J7 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | Green PC | J8 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN4 | Green PC LED | J9 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | Reset switch | J10 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN7 | Turbo switch | J11 |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J2 | Turbo LED | J12 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface LED | J4 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Chassis fan power | J5 | Cache slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 32 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 32 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 32 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 32 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 32 | (2) 8M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 |
|----------------------------+-------------------------------|
| 256KB (A) | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 256KB (B) | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB (A) | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 512KB (B) | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP8 | JP9 | JP11 |
|--------+------------+------------+-------------------------|
| 75MHz | pins 1 & 2 | pins 1 & 2 | Open |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 90MHz | pins 1 & 2 | pins 2 & 3 | Open |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 100MHz | pins 2 & 3 | pins 1 & 2 | Open |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 120MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 closed |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 133MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 closed |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 150MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2, 3 & 4 |
| | closed | closed | closed |
|--------+------------+------------+-------------------------|
| 166MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2, 3 & 4 |
| | closed | closed | closed |
|--------+------------+------------+-------------------------|
| 180MHz | pins 1 & 2 | pins 2 & 3 | pins 3 & 4 closed |
| | closed | closed | |
|--------+------------+------------+-------------------------|
| 200MHz | pins 2 & 3 | pins 1 & 2 | pins 3 & 4 closed |
| | closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP6 | JP7 |
|-----------------------------+---------------+--------------|
| 2.5v/3.3v (except for P55C) | Open | Open |
|-----------------------------+---------------+--------------|
| 3.3v | Closed | Closed |
+------------------------------------------------------------+