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# FRONTIER INDUSTRIAL, INC.
ISA486GSi
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 25/33/40/50(internal)/66(internal)MHz
Chip Set ALI M1219
Max. Onboard DRAM 32MB
Cache None
BIOS ACER
Dimensions 220mm x 220mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+---------------+------------+--------------|
| External | J3 pins 1 & 4 | Turbo LED | J4 pins 12 & |
| battery | | | 13 |
|----------------+---------------+------------+--------------|
| Power LED & | J4 pins 1 - 5 | Turbo | J4 pins |
| keylock | | switch | 15,16,& 17 |
|----------------+---------------+------------+--------------|
| Speaker | J4 pins 7 - | Reset | J4 pins 19 & |
| | 10 | switch | 20 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+--------+----------------|
| » | CMOS memory normal operation | J1 | Open |
|---+------------------------------+--------+----------------|
| | CMOS memory clear | J1 | Closed |
|---+------------------------------+--------+----------------|
| » | Battery type select internal | J3 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+--------+----------------|
| | Battery type select external | J3 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | J6 | J7 |
|------------------+--------------------+--------------------|
| 80486SX | Open | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| ODP486SX | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 80487SX | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 80486DX | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 80486DX2 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | OSC1 | JP8 | JP9 | JP10 | JP11 |
|----------+----------+----------+---------+--------+--------|
| 20MHz | 40MHz | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 25MHz | 50MHz | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 33MHz | 66MHz | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 50MHz | 50MHz | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 |
|----------+----------+----------+---------+--------+--------|
| 66iMHz | 66MHz | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+