(TXT) View Source
# AST RESEARCH, INC.
PREMMIA 486
(202514-000,202557-000,101,202613-X0X)
Processor 80486SX/80487SX/ODP486SX/80486DX/80486DX2/Pentium
Overdrive/Pentium
Processor 25/33/50(internal)/60/66(internal)MHz
Speed
Chip Set Unidentified
Max. Onboard 128MB
DRAM
Cache 128/256/512KB
BIOS Unidentified
Dimensions 355mm x 305mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports (2),
VGA port, CPU/cache slot, LAN connectors (3)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port | CN1 | Floppy drive | J25 |
| | | interface 2 | |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | External battery | J26 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN3 | Speaker | J27 |
|-------------------+----------+------------------+----------|
| Serial port | CN4 | Chassis fan | J28 |
| | | power | |
|-------------------+----------+------------------+----------|
| VGA port | CN5 | Front panel | J29 |
| | | connector | |
|-------------------+----------+------------------+----------|
| LAN module | J15 | Test connector | J30 |
| connector | | | |
|-------------------+----------+------------------+----------|
| LAN module | J16 | IDE interface | J35 |
| connector | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface | J22 | LAN module | J46 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Test connector | J23 | CPU/cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Floppy drive | J24 | | |
| interface 1 | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Factory configured - do | CN6 | N/A |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E2 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Parity enabled | E3 | Closed |
|---+---------------------------+---------------+------------|
| | Parity disabled | E3 | Open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | E5 | pins 2 & 3 |
| | 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 | | |
|---+---------------------------+---------------+------------|
| » | CMOS memory normal | SW1/3 | Off |
| | operation | | |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | SW1/3 | On |
|---+---------------------------+---------------+------------|
| » | Flash BIOS normal | SW1/4 | Off |
| | operation | | |
|---+---------------------------+---------------+------------|
| | Flash BIOS force update | SW1/4 | On |
| | at boot | | |
|---+---------------------------+---------------+------------|
| » | Password enabled | SW1/5 | Off |
|---+---------------------------+---------------+------------|
| | Password disabled | SW1/5 | On |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/6 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/7 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/8 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | I/O address select 398h | SW1/9 | On |
|---+---------------------------+---------------+------------|
| | I/O address select 26Eh | SW1/9 | Off |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | SW1/10 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | SW1/10 | Off |
| | monochrome | | |
|------------------------------------------------------------|
| Note: E5 may not be present on all revisions. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 512K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 512K x | (1) 512K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 512K x | (1) 512K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 34MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 2M x 36 | (1) 2M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 256K x | (1) 256K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 512K x | (1) 512K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | SL1 |
|---------------------------+--------------------------------|
| 128KB | Installed |
|---------------------------+--------------------------------|
| 256KB | Installed |
|---------------------------+--------------------------------|
| 512KB | Installed |
|------------------------------------------------------------|
| Note: Only one size can be installed at any one time. If |
| CPU card is installed, cache cannot be installed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | E1 | E4 | E6 | E7 |
|------------+-----------+-----------+-----------+-----------|
| 80486SX | pins 2 & | pins 1 & | pins 1 & | pins 1 & |
| (PQFP) | 3 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486SX | pins 1 & | Open | pins 2 & | pins 2 & |
| (PGA) | 2 closed | | 3 closed | 3 closed |
|------------+-----------+-----------+-----------+-----------|
| 80487SX | pins 2 & | pins 1 & | pins 1 & | pins 1 & |
| | 3 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| odp486sx | pins 2 & | pins 1 & | pins 1 & | pins 1 & |
| | 3 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX | pins 1 & | pins 2 & | pins 1 & | pins 1 & |
| | 2 closed | 3 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX2 | pins 1 & | pins 2 & | pins 1 & | pins 1 & |
| | 2 closed | 3 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| Pentium | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| Overdrive | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| Pentium | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------------------------------------------------------|
| Note: If PQFP is used, E1 is open. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+------------------+------------------------|
| 1MB | 1MB | NONE |
|----------------+------------------+------------------------|
| 2MB | 1MB | (2) 256K x 16 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: The location of pin 1 is unidentified. |
+------------------------------------------------------------+