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# AST RESEARCH, INC.
PREMIUM 386SX/16
Processor 80386SX
Processor 16MHz
Speed
Chip Set AST
Max. Onboard None (4MB total on 32-bit external CPU/NPU card)
DRAM
Cache 16KB
BIOS AST
Dimensions 355mm x 251mm
I/O Options 16-bit external expansion card slot, 32-bit
external CPU/NPU card slot, 32-bit external
memory card slot (2), floppy interface, IDE
interface, parallel port, serial ports (2)
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| 32-bit external | CN1 | Auxillary floppy | P4 |
| CPU/NPU card | | drive interface | |
|------------------+----------+-------------------+----------|
| 32-bit external | CN2 | Power LED & reset | P5 |
| memory card | | switch | |
|------------------+----------+-------------------+----------|
| 32-bit external | CN3 | Speaker | P6 |
| memory card | | | |
|------------------+----------+-------------------+----------|
| 16-bit external | CN4 | External battery | P8 |
| expansion card | | | |
|------------------+----------+-------------------+----------|
| Primary floppy | P3 | IDE interface | P11 |
| drive interface | | | |
|------------------------------------------------------------|
| Note:Expansion card slots CN1 through CN4 will accept |
| standard 8 or 16-bit ISA cards. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Password check enabled | E1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Password check disabled | E1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E2 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | E3 | Open |
| | alter | | |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+-----------+-------------|
| » | Parity check enabled | E1 | Closed |
|---+------------------------------+-----------+-------------|
| | Parity check disabled | E1 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+--------------+------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+--------------+------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+--------------+------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+--------------+------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+