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# ELITEGROUP COMPUTER SYSTEMS, INC.
SA 486P AIO
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Intel
Max. Onboard 128MB
DRAM
Cache 128/256KB
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit PCI local bus slots (3), floppy drive
interface,
IDE interface, parallel port, serial ports (2),
SCSI drive interface
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Reset switch | J1 | Parallel port | J8 |
|-------------------+----------+------------------+----------|
| Speaker | J2 | Serial port 2 | J10 |
|-------------------+----------+------------------+----------|
| Power LED & | J3 | Serial port 1 | J11 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| SCSI drive | J4 | 32-bit PCI Local | S1 |
| interface | | bus slot | |
|-------------------+----------+------------------+----------|
| IDE HDD interface | J5 | 32-bit PCI Local | S2 |
| | | bus slot | |
|-------------------+----------+------------------+----------|
| Floppy drive | J6 | 32-bit PCI Local | S3 |
| interface | | bus slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Parallel port IRQ7 | JP13 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ5 | JP13 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS write protect enabled | JP19 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS write protect | JP19 | pins 2 & 3 |
| | disabled | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP26 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | ODP586SX write back mode enabled | JP27 | Closed |
|---+----------------------------------+--------+------------|
| | ODP586SX write back mode | JP27 | Open |
| | disabled | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP28 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP29 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | On board SCSI termination | JP34 | Closed |
| | enabled | | |
|---+----------------------------------+--------+------------|
| | On board SCSI termination | JP34 | Open |
| | disabled | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP42 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP43 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP44 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP45 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP46 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP47 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP48 | pins 2 & 3 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Max | Bank 0 | Bank 1 | TAG |
| | Cachable | | | |
|-------+-------------+------------+------------+------------|
| 128KB | 16MB | (4) 32K x | NONE | (1) 16K x |
| | | 8 | | 4 |
|-------+-------------+------------+------------+------------|
| 256KB | 32MB | (4) 32K x | (4) 32K x | (1) 16K x |
| | | 8 | 8 | 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 | JP5 | JP6 | JP7 | JP9 |JP10 | JP21 | JP22 |
|------+------+------+------+------+-----+-----+------+------|
|128KB |2 & 3 |1 & 2 |1 & 2 |2 & 3 |2 & 3|2 & 3| Open | Open |
|------+------+------+------+------+-----+-----+------+------|
|256KB |1 & 2 |2 & 3 |1 & 2 |2 & 3 |2 & 3|2 & 3|Closed|Closed|
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU | Socket | JP23 | JP24 | JP25 | JP51 |
|------------+--------+----------+--------+---------+--------|
| 80486SX | PGA | pins 2 & | Closed | pins 2 | Closed |
| | | 3 | | & 3 | |
|------------+--------+----------+--------+---------+--------|
| 80486SX | PQFP | N/A | Open | pins 2 | Closed |
| | | | | & 3 | |
|------------+--------+----------+--------+---------+--------|
| 80487SX | PGA | pins 1 & | Closed | 1 & 2 | Closed |
| | | 2 | | and 3 & | |
| | | | | 4 | |
|------------+--------+----------+--------+---------+--------|
| 80486DX | PGA | pins 3 & | Closed | 1 & 2 | Closed |
| | | 4 | | and 3 & | |
| | | | | 4 | |
|------------+--------+----------+--------+---------+--------|
| 80486DX2 | PGA | pins 3 & | Closed | 1 & 2 | Closed |
| | | 4 | | and 3 & | |
| | | | | 4 | |
|------------+--------+----------+--------+---------+--------|
| Pentium | PGA | pins 1 & | Closed | 1 & 2 | Open |
| Overdrive | | 2 | | and 3 & | |
| | | | | 4 | |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 | JP3 | JP17 | JP18 |
|---------+--------+------+--------+------------+------------|
| 25MHz | Closed | Open | Closed | pins 2 & 3 | pins 2 & 3 |
|---------+--------+------+--------+------------+------------|
| 33MHz | Open | Open | Closed | pins 2 & 3 | pins 1 & 2 |
|---------+--------+------+--------+------------+------------|
| 50i MHz | Closed | Open | Closed | pins 2 & 3 | pins 2 & 3 |
|---------+--------+------+--------+------------+------------|
| 66i MHz | Open | Open | Closed | pins 2 & 3 | pins 1 & 2 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI BUS INTERRUPT SELECT |
|------------------------------------------------------------|
| Setting | JP14 | JP15 | JP16 |
|----------------+---------------+-------------+-------------|
| » | IRQ 15 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed | closed |
|-----+----------+---------------+-------------+-------------|
| | IRQ 10 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed | closed |
|-----+----------+---------------+-------------+-------------|
| | IRQ 11 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed | closed |
|-----+----------+---------------+-------------+-------------|
| | None | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed | closed |
|------------------------------------------------------------|
| Note: IRQ14 is hardwired for IDE interface. |
| |
| If using an interrupt that cannot be shared with other |
| devices, JP14, JP15, and JP16 should be set on pins 2 & 3 |
| closed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EPP/EPC CONFIGURATION |
|------------------------------------------------------------|
| Type | JP11 | JP12 |
|------------------+--------------------+--------------------|
| DRQ1/DACK1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DRQ3/DACK3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 512K x | (1) 512K x | (1) 256K x | (1) 256K 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 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 2M x 36 | (1) 2M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 512K x | (1) 512K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 2M x 36 | (1) 2M x 36 | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CONT.) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 1M x | (1) 1M 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 |
|-------+-------------+------------+------------+------------|
| 34MB | (1) 4M x 36 | (1) 4M x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 2M x 36 | (1) 2M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 256K x | (1) 256K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 8M x 36 | (1) 8M x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 512K x | (1) 512K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 8M x 36 | (1) 8M x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+