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# FREE COMPUTER TECHNOLOGY, INC.
80486PCI
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Saturn
Max. Onboard 128MB
DRAM
Cache 128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit PCI local bus slots (4)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Power LED & | JP17 | 32-bit VESA Local | S1 |
| keylock | | bus slot | |
|---------------+----------+----------------------+----------|
| Speaker | JP18 | 32-bit VESA Local | S2 |
| | | bus slot | |
|---------------+----------+----------------------+----------|
| Reset switch | JP19 | 32-bit VESA Local | S3 |
| | | bus slot | |
|---------------+----------+----------------------+----------|
| Turbo LED | JP20 | 32-bit VESA Local | S4 |
| | | bus slot | |
|---------------+----------+----------------------+----------|
| Turbo switch | JP21 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Cache enabled | JP4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Cache disabled | JP4 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 1 | Bank 2 | Bank 3 | Bank 4 |
|-------+-------------+------------+------------+------------|
| 2MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 1M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 6MB | (1) 2M x 36 | (1) 2M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 2M x 36 | (1) 2M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 4M x 36 | (1) 4M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 18MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 18MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 8M x 36 | (1) 8M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 8M x 36 | (1) 8M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 34MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 34MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 2M x 36 | (1) 2M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 8M x 36 | (1) 8M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 16M x | (1) 16M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 32M x | (1) 32M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 1M x 36 | (1) 1M x | (1) 32M x | (1) 32M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 32M x | (1) 32M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 2M x 36 | (1) 2M x | (1) 32M x | (1) 32M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 32M x | (1) 32M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 4M x 36 | (1) 4M x | (1) 32M x | (1) 32M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 32M x | (1) 32M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 32M x | (1) 32M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 32M x | (1) 32M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 16M x | (1) 16M x | (1) 32M x | (1) 32M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 32M x | (1) 32M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 32M x | (1) 32M x | (1) 32M x | (1) 32M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 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 | JP2 | JP3 | JP12 | JP13 |
|-------+-----------------+----------------+--------+--------|
| 128KB | pins 1 & 2 | pins 2 & 3 | Open | Open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 256KB | pins 2 & 3 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 512KB | pins 2 & 3 | pins 2 & 3 | Closed | Closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP14 | JP15 | JP16 |
|------------+------------+------------+---------------------|
| 80486SX | pins 1 & 2 | Open | pins 2 & 3 closed |
| | closed | | |
|------------+------------+------------+---------------------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 and 3 & |
| | closed | closed | 4 closed |
|------------+------------+------------+---------------------|
| 80487SX | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 and 3 & |
| | closed | closed | 4 closed |
|------------+------------+------------+---------------------|
| ODP486SX | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 and 3 & |
| | closed | closed | 4 closed |
|------------+------------+------------+---------------------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 and 3 & |
| | closed | closed | 4 closed |
|------------+------------+------------+---------------------|
| Pentium | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 and 3 & |
| Overdrive | closed | closed | 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP10 | JP11 |
|-------------+-------------------+-------------+------------|
| 25MHz | pins 1 & 2 closed | Open | Closed |
|-------------+-------------------+-------------+------------|
| 33MHz | pins 2 & 3 closed | Closed | Open |
|-------------+-------------------+-------------+------------|
| 50iMHz | pins 1 & 2 closed | Open | Closed |
|-------------+-------------------+-------------+------------|
| 66iMHz | pins 2 & 3 closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION |
|------------------------------------------------------------|
| Type | JP22 | JP23 | JP24 |
|---------------+------------------+------------+------------|
| IRQ 5 | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|---------------+------------------+------------+------------|
| IRQ 11 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------------+------------------+------------+------------|
| IRQ 15 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|---------------+------------------+------------+------------|
| Not installed | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP27 | JP28 |
|-------------------------------+--------+-------------------|
| ISA IDE controller | Closed | pins 2 & 3 closed |
|-------------------------------+--------+-------------------|
| PCI IDE controller (edge | Open | pins 4 & 5 closed |
| trigger) | | |
|-------------------------------+--------+-------------------|
| PCI IDE controller (level | Open | pins 1 & 2 closed |
| trigger) | | |
+------------------------------------------------------------+