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# AXIOM TECHNOLOGY, INC.
AX8158
Processor Pentium
Processor Speed 75/90/100/120/133/166/MHz
Chip Set SIS
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512/1024KB
BIOS AMI
Dimensions 388mm x 122mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, PS/2 mouse
interface, serial ports (2), cache slot
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface LED | CN1 | Serial port 2 | CN9 |
|-------------------+----------+------------------+----------|
| Reset switch | CN2 | Auxiliary | CN10 |
| | | keyboard | |
| | | connector | |
|-------------------+----------+------------------+----------|
| Speaker | CN3 | PS/2 mouse | CN11 |
| | | interface | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN5 | Serial port 1 | CN12 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN6 | PS/2 mouse port | CN14 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN7 | Cache slot | SL1 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN8 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | PCI bus clock select CPUCLK/2 | J7 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | PCI bus clock select 32MHz | J7 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CPU NA# mode disabled | J8 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CPU NA# mode enabled | J8 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CPU cache type select write back | J9 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CPU cache type select write | J9 | Pins 2 & 3 |
| | through | | closed |
|---+-----------------------------------+-------+------------|
| » | Parallel port IRQ select IRQ7 | J12 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Parallel port IRQ select IRQ5 | J12 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | WDT function select NMI | J13 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | WDT function select reset | J13 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | | |
|------+-------------+-------------+------------+------------|
| 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 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 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 36 | None | None |
|------+-------------+-------------+------------+------------|
| 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) 2M x 36 | (1) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 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 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 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 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 2M x 36 | (1) 2M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 66MB | (1) 256K x | (1) 256K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 32 |
| SIMMs. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 | TAG |
|-----------+--------------+-------------------+-------------|
| 256KB (A) | (8) 32K x 8 | Not installed | (1) 32K x 8 |
|-----------+--------------+-------------------+-------------|
| 256KB (B) | None | 256KB module | None |
| | | installed | |
|-----------+--------------+-------------------+-------------|
| 512KB (A) | (8) 64K x 8 | Not installed | (1) 32K x 8 |
|-----------+--------------+-------------------+-------------|
| 512KB (B) | None | 512KB module | None |
| | | installed | |
|-----------+--------------+-------------------+-------------|
| 1MB | (8) 128K x 8 | Not installed | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J2 | J3 |
|------------------+--------------------+--------------------|
| 256KB (A) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB (B) | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB (A) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 512KB (B) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1MB | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | J1 |
|---------------------------------+--------------------------|
| » | Asynchronous | Pins 1 & 2 closed |
|---+-----------------------------+--------------------------|
| | Burst/pipeline burst | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | J5 | J6 | J10 | J11 |
| speed | speed | | | | | |
|--------+----------+------------+-----+-----+-------+-------|
| 75MHz | 50MHz | 1.5x | 1 & | 2 & | 1 & 2 | 1 & 2 |
| | | | 2 | 3 | | |
|--------+----------+------------+-----+-----+-------+-------|
| 90MHz | 60MHz | 1.5x | 2 & | 2 & | 1 & 2 | 1 & 2 |
| | | | 3 | 3 | | |
|--------+----------+------------+-----+-----+-------+-------|
| 100MHz | 66MHz | 1.5x | 1 & | 1 & | 1 & 2 | 1 & 2 |
| | | | 2 | 2 | | |
|--------+----------+------------+-----+-----+-------+-------|
| 120MHz | 60MHz | 2x | 2 & | 2 & | 1 & 2 | 2 & 3 |
| | | | 3 | 3 | | |
|--------+----------+------------+-----+-----+-------+-------|
| 133MHz | 66MHz | 2x | 1 & | 1 & | 1 & 2 | 2 & 3 |
| | | | 2 | 2 | | |
|--------+----------+------------+-----+-----+-------+-------|
| 166MHz | 66MHz | 2.5x | 1 & | 1 & | 2 & 3 | 2 & 3 |
| | | | 2 | 2 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J4 | J14 |
|------------------+--------------------+--------------------|
| » | 3.36v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| | 3.53v | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+