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# FIRST INTERNATIONAL COMPUTER, INC.
486-GVT (REV. A2)
Processor CX486S/80486SX/CX486DX/CX487S/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/50/66(internal)/66MHz
Speed
Chip Set VIA
Max. 96MB
Onboard
DRAM
Cache 64/128/256KB
BIOS AMI/Award
Dimensions 259mm x 218mm
I/O 32-bit VESA local bus slots (2)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Speaker | J12 |
|------------------+----------+-------------------+----------|
| Turbo LED | J9 | Power LED & | J13 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Turbo switch | J10 | 32-bit VESA Local | SL1 |
| | | bus slot | |
|------------------+----------+-------------------+----------|
| Reset switch | J11 | 32-bit VESA Local | SL2 |
| | | bus slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+---------+------------|
| » | Battery select - internal | J2 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | Battery select - external | J2 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Monitor type select | J4 | Open |
| | monochrome/EGA/VGA | | |
|---+---------------------------------+---------+------------|
| | Monitor type select color | J4 | Closed |
|---+---------------------------------+---------+------------|
| » | Password clear - AMI | J7 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | Password clear - Award | J7 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | J8 | pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | 80486SX/P23S/P4S/CX486S PQFP | JC6 | Open |
| | disabled | | |
|---+---------------------------------+---------+------------|
| | 80486SX/P23S/P4S/CX486S PQFP | JC6 | Closed |
| | enabled | | |
|---+---------------------------------+---------+------------|
| » | CPU 2X clock mode | JX1 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+---------+------------|
| | CPU 1X clock mode | JX1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+---------+------------|
| » | Factory configured - do not | JX2 | pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+---------+------------|
| » | Keyboard select - external | JKB1-4, | pins 1 & 2 |
| | | JX3 | closed |
|---+---------------------------------+---------+------------|
| | Keyboard select - internal | JKB1-4, | pins 2 & 3 |
| | | JX3 | closed |
|---+---------------------------------+---------+------------|
| » | Intel S-series CPU | JCX1 | Open |
|---+---------------------------------+---------+------------|
| | CX486S | JCX1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|----------+---------------+----------------+----------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|----------+---------------+----------------+----------------|
| 1MB | NONE | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 1MB | NONE | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 2MB | (4) 256K x 9 | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 2MB | NONE | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 2MB | (4) 256K x 9 | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 3MB | (4) 256K x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|----------+---------------+----------------+----------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 4MB | NONE | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 5MB | (4) 256K x 9 | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 5MB | (4) 1M x 9 | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 5MB | (4) 1M x 9 | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 5MB | NONE | (1) 256KB x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 5MB | NONE | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 6MB | (4) 256K x 9 | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 6MB | (4) 256K x 9 | (1) 256KB x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 6MB | (4) 1M x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 9MB | (4) 256K x 9 | (1) 1M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 9MB | (4) 1M x 9 | (1) 256KB x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 9MB | (4) 1M x 9 | (1) 1M x 36 | (1) 256KB x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|----------+---------------+----------------+----------------|
| 16MB | NONE | (1) 4M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 16MB | NONE | NONE | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 17MB | (4) 256K x 9 | NONE | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 17MB | NONE | (1) 256KB x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 17MB | NONE | (1) 4M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 17MB | (4) 4M x 9 | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 17MB | (4) 4M x 9 | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 18MB | (4) 256K x 9 | (1) 256KB x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 18MB | (4) 256K x 9 | (1) 4M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 18MB | (4) 4M x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 20MB | (4) 1M x 9 | NONE | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 20MB | (4) 4M x 9 | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 20MB | (4) 4M x 9 | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 20MB | NONE | (1) 4M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 256K x 9 | (1) 1M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 256K x 9 | (1) 4M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 1M x 9 | (1) 256KB x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 1M x 9 | (1) 4M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 4M x 9 | (1) 256KB x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 21MB | (4) 4M x 9 | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 24MB | (4) 1M x 9 | (1) 4M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 33MB | (4) 256K x 9 | (1) 4M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 33MB | (4) 4M x 9 | (1) 256KB x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 33MB | (4) 4M x 9 | (1) 4M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 36MB | (4) 1M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 36MB | (4) 4M x 9 | (1) 4M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|----------+---------------+----------------+----------------|
| 65MB | (4) 16M x 9 | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 65MB | (4) 16M x 9 | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 66MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 68MB | (4) 16M x 9 | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 68MB | (4) 16M x 9 | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 69MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 1M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| 69MB | (4) 16M x 9 | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 72MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|----------+---------------+----------------+----------------|
| 65MB | (4) 16M x 9 | (1) 256KB x 36 | NONE |
|----------+---------------+----------------+----------------|
| 65MB | (4) 16M x 9 | NONE | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 66MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 68MB | (4) 16M x 9 | (1) 1M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 68MB | (4) 16M x 9 | NONE | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 69MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 69MB | (4) 16M x 9 | (1) 1M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 72MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 80MB | (4) 16M x 9 | (1) 4M x 36 | NONE |
|----------+---------------+----------------+----------------|
| 80MB | (4) 16M x 9 | NONE | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 81MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 81MB | (4) 16M x 9 | (1) 256KB x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 81MB | (4) 16M x 9 | (1) 4M x 36 | (1) 256KB x 36 |
|----------+---------------+----------------+----------------|
| 84MB | (4) 16M x 9 | (1) 1M x 36 | (1) 4M x 36 |
|----------+---------------+----------------+----------------|
| 84MB | (4) 16M x 9 | (1) 4M x 36 | (1) 1M x 36 |
|----------+---------------+----------------+----------------|
| 96MB | (4) 16M x 9 | (1) 4M x 36 | (1) 4M x 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 | JS3 |
|-------+-----------------+-----------------+----------------|
| 64KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 128KB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU Type | RN9 | RN10 | RN11 |
|---------------------+------------+------------+------------|
| CX486S/CX486DX | Installed | Not | Not |
| (PGA) | | installed | installed |
|---------------------+------------+------------+------------|
| CX486S(PQFP) | Not | Not | Installed |
| | installed | installed | |
|---------------------+------------+------------+------------|
| CX487S | Installed | Not | Not |
| | | installed | installed |
|---------------------+------------+------------+------------|
| 486SX/DX/DX2 | Not | Not | Not |
| | installed | installed | installed |
|---------------------+------------+------------+------------|
| 486 SL-Enhanced | Not | Installed | Not |
| (PGA) | installed | | installed |
|---------------------+------------+------------+------------|
| 486 SL-Enhanced | Not | Not | Installed |
| (PQFP) | installed | installed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU Type | JC1 | JC2 | JC3 | JC4 | JC5 |
|-----------------+-------+-------+--------+--------+--------|
| 486SX/486 SL | 2 & 3 | 2 & 3 | Open | Open | Closed |
| Enhanced | | | | | |
|-----------------+-------+-------+--------+--------+--------|
| CX486S | 2 & 3 | 2 & 3 | Closed | Open | Open |
|-----------------+-------+-------+--------+--------+--------|
| CX487S | 1 & 2 | 1 & 2 | Closed | Open | Open |
|-----------------+-------+-------+--------+--------+--------|
| CX486DX | 1 & 2 | 1 & 2 | Closed | Open | Open |
|-----------------+-------+-------+--------+--------+--------|
| 80486DX/DX2 | 1 & 2 | 1 & 2 | Closed | Open | Closed |
|-----------------+-------+-------+--------+--------+--------|
| 486 SL-Enhanced | 1 & 2 | 1 & 2 | Closed | Open | Closed |
|-----------------+-------+-------+--------+--------+--------|
| Pentium | 1 & 2 | 1 & 2 | Open | Closed | Open |
| Overdrive | | | | | |
|------------------------------------------------------------|
| Note: pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECT - JK1 |
|------------------------------------------------------------|
| Speed | Pins 1 & 2 | Pins3 & 4 | Pins 5 & 6 | Pins 7 & 8 |
|---------+------------+-----------+------------+------------|
| 25MHz | Open | Open | Closed | Open |
|---------+------------+-----------+------------+------------|
| 33MHz | Closed | Open | Open | Open |
|---------+------------+-----------+------------+------------|
| 40MHz | Closed | Closed | Open | Open |
|---------+------------+-----------+------------+------------|
| 40iMHz | Closed | Open | Closed | Closed |
|---------+------------+-----------+------------+------------|
| 50MHz | Open | Open | Closed | Closed |
|---------+------------+-----------+------------+------------|
| 50iMHz | Open | Closed | Open | Open |
|---------+------------+-----------+------------+------------|
| 66MHz | Open | Closed | Open | Closed |
|---------+------------+-----------+------------+------------|
| 66iMHz | Closed | Open | Open | Closed |
|---------+------------+-----------+------------+------------|
| 80MHz | Closed | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE/BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | Wait states | JV1 | JV2 |
|-----------+---------------+-------------------+------------|
| < 33MHz | 0 wait states | pins 2 & 3 closed | pins 2 & 3 |
| | | | closed |
|-----------+---------------+-------------------+------------|
| > 33MHz | 1 wait state | pins 1 & 2 closed | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+