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# AST RESEARCH, INC.
PREMMIA SE
Processor 80486SX/80486DX/80486DX2/Pentium
Overdrive/Pentium
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set AST
Max. Onboard 128MB
DRAM
Cache 64/128/256KB (with external cache card installed)
BIOS AST
Dimensions 330mm x 218mm
I/O Options Floppy drive interfaces (2), IDE interface,
parallel port, PS/2 mouse port, serial ports (2),
VGA feature connector, VGA port, SCSI backplane
card
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Chassis fan power | J9 | IDE interface | J22 |
|--------------------+----------+-----------------+----------|
| PS/2 mouse port | J12 | Floppy drive | J24 |
| | | interface | |
| | | (primary) | |
|--------------------+----------+-----------------+----------|
| Parallel port | J13 | Floppy drive | J25 |
| | | interface | |
| | | (secondary) | |
|--------------------+----------+-----------------+----------|
| Serial port 1 | J14 | External | J26 |
| | | battery | |
|--------------------+----------+-----------------+----------|
| Pentium/Cache | J17 | Speaker | J27 |
| upgrade connector | | | |
|--------------------+----------+-----------------+----------|
| VGA port | J18 | Chassis fan | J28 |
| | | power | |
|--------------------+----------+-----------------+----------|
| VGA feature | J19 | Control console | J29 |
| connector | | connector | |
|--------------------+----------+-----------------+----------|
| Serial port 2 | J20 | IDE interface | J35 |
| | | LED | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Flash BIOS type select 5v | E6 | pins 2 & 3 |
| | - 5volt | | closed |
|---+---------------------------+---------------+------------|
| | Flash BIOS type select | E6 | pins 1 & 2 |
| | 12v - 12volt | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E800 | pins 1 & 2 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E801 | pins 2 & 3 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E802 | pins 2 & 3 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E803 | pins 1 & 2 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E804 | pins 1 & 2 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | On board video enabled | SW1/1 | On |
|---+---------------------------+---------------+------------|
| | On board video disabled | SW1/1 | Off |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/2 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | EISA CMOS memory normal | SW1/3 | Off |
| | operation | | |
|---+---------------------------+---------------+------------|
| | EISA CMOS memory clear | SW1/3 | On |
|---+---------------------------+---------------+------------|
| » | Boot type select normal | SW1/4 | Off |
|---+---------------------------+---------------+------------|
| | Boot type select flash | SW1/4 | On |
| | BIOS update | | |
|---+---------------------------+---------------+------------|
| » | Password disabled | SW1/5 | On |
|---+---------------------------+---------------+------------|
| | Password enabled | SW1/5 | Off |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/6 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | System setup type select | SW1/7 | Off |
| | allow access | | |
|---+---------------------------+---------------+------------|
| | System setup type select | SW1/7 | On |
| | deny access | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/8 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | I/O port address select | SW1/9 | On |
| | 0398h | | |
|---+---------------------------+---------------+------------|
| | I/O port address select | SW1/9 | Off |
| | 026Eh | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/10 | Off |
| | not alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+----------------------+---------------------|
| 515KB | (2) 256K x 4 | NONE |
|---------------+----------------------+---------------------|
| 1MB | (2) 256K x 4 | (2) 256K x 4 |
|------------------------------------------------------------|
| Note: Bank 0- is factory installed and is not |
| configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: CPU speed is dependent upon main board model. |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| DC power connector | CN1 | SCSI connector | J4 |
| 1 | | | |
|--------------------+----------+-----------------+----------|
| DC power connector | CN2 | SCSI connector | J7 |
| 2 | | | |
|--------------------+----------+-----------------+----------|
| SCSI connector | J1 | SCSI drive cage | J8 |
| | | connector | |
|--------------------+----------+-----------------+----------|
| SCSI drive cage | J2 | SCSI drive cage | J9 |
| connector | | connector | |
|--------------------+----------+-----------------+----------|
| SCSI drive cage | J3 | SCSI connector | J10 |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| » | Terminator power jumper enabled | E13 | Closed |
|---+-----------------------------------+---------+----------|
| | Terminator power jumper disabled | E13 | Open |
|---+-----------------------------------+---------+----------|
| » | Terminator power jumper enabled | E14 | Closed |
|---+-----------------------------------+---------+----------|
| | Terminator power jumper disabled | E14 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID CONFIGURATION (J1) |
|------------------------------------------------------------|
| Setting | E1 | E2 | E3 |
|---------------+---------------+--------------+-------------|
| ID0 | Open | Open | Open |
|---------------+---------------+--------------+-------------|
| ID1 | Closed | Open | Open |
|---------------+---------------+--------------+-------------|
| ID2 | Open | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID3 | Closed | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID4 | Open | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID5 | Closed | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID6 | Open | Closed | Closed |
|---------------+---------------+--------------+-------------|
| ID7 | N/A | N/A | N/A |
|------------------------------------------------------------|
| Note: ID7 is factory reserved - do not alter. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID CONFIGURATION (J4) |
|------------------------------------------------------------|
| Setting | E4 | E5 | E6 |
|---------------+---------------+--------------+-------------|
| ID0 | Open | Open | Open |
|---------------+---------------+--------------+-------------|
| ID1 | Closed | Open | Open |
|---------------+---------------+--------------+-------------|
| ID2 | Open | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID3 | Closed | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID4 | Open | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID5 | Closed | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID6 | Open | Closed | Closed |
|---------------+---------------+--------------+-------------|
| ID7 | N/A | N/A | N/A |
|------------------------------------------------------------|
| Note: ID7 is factory reserved - do not alter. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID CONFIGURATION (J7) |
|------------------------------------------------------------|
| Setting | E7 | E8 | E9 |
|---------------+---------------+--------------+-------------|
| ID0 | Open | Open | Open |
|---------------+---------------+--------------+-------------|
| ID1 | Closed | Open | Open |
|---------------+---------------+--------------+-------------|
| ID2 | Open | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID3 | Closed | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID4 | Open | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID5 | Closed | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID6 | Open | Closed | Closed |
|---------------+---------------+--------------+-------------|
| ID7 | N/A | N/A | N/A |
|------------------------------------------------------------|
| Note: ID7 is factory reserved - do not alter. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID CONFIGURATION (J10) |
|------------------------------------------------------------|
| Setting | E10 | E11 | E12 |
|---------------+---------------+--------------+-------------|
| ID0 | Open | Open | Open |
|---------------+---------------+--------------+-------------|
| ID1 | Closed | Open | Open |
|---------------+---------------+--------------+-------------|
| ID2 | Open | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID3 | Closed | Closed | Open |
|---------------+---------------+--------------+-------------|
| ID4 | Open | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID5 | Closed | Open | Closed |
|---------------+---------------+--------------+-------------|
| ID6 | Open | Closed | Closed |
|---------------+---------------+--------------+-------------|
| ID7 | N/A | N/A | N/A |
|------------------------------------------------------------|
| Note: ID7 is factory reserved - do not alter. |
+------------------------------------------------------------+