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# AMERICAN MEGATRENDS, INC.
APOLLO
Processor Pentium
Processor Speed 75/90/100/120/133MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS AMI
Dimensions 259mm x 216mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse | CN1 | External battery | J6 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | Chassis fan | J11 |
| | | power | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN3 | Reset switch | J12 |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Speaker | J13 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN5 | Power LED & | J14 |
| interface | | keylock | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | IDE interface | JP1 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN7 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Cache type select write back | J1 | Open |
|---+-----------------------------------+-------+------------|
| | Cache type select write through | J1 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Monitor type select | J2 | Open |
| | monochrome/EGA/VGA | | |
|---+-----------------------------------+-------+------------|
| | Monitor type select CGA | J2 | Closed |
|---+-----------------------------------+-------+------------|
| » | Pipeline mode enabled | J3 | Closed |
|---+-----------------------------------+-------+------------|
| | Pipeline mode disabled | J3 | Open |
|---+-----------------------------------+-------+------------|
| » | Flash BIOS voltage select 5v | J4 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | J4 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CPU bus speed select PCLK/3 | J5 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | CPU bus speed select PCLK/4 | J5 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | PCI/CPU bus speed ratio select | J8 | Closed |
| | 1/2 | | |
|---+-----------------------------------+-------+------------|
| | PCI/CPU bus speed ratio select | J8 | Open |
| | 3/2 | | |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JCP | Open |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JCP | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+--------------------+-----------------------|
| 8MB | (2) 1M x 36 | None |
|---------------+--------------------+-----------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|---------------+--------------------+-----------------------|
| 16MB | (2) 2M x 36 | None |
|---------------+--------------------+-----------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|---------------+--------------------+-----------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|---------------+--------------------+-----------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|---------------+--------------------+-----------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
|---------------+--------------------+-----------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|---------------+--------------------+-----------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|---------------+--------------------+-----------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|---------------+--------------------+-----------------------|
| 64MB | (2) 8M x 36 | None |
|---------------+--------------------+-----------------------|
| 66MB | (2) 8M x 36 | (2) 256K x 36 |
|---------------+--------------------+-----------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|---------------+--------------------+-----------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|---------------+--------------------+-----------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|---------------+--------------------+-----------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. The location of the Banks |
| 0 & 1 are unidentified. Board also accepts x 32 SIMMs. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|-------------------------+-----------------+----------------|
| 256KB (A) mixed voltage | (8) 32K x 8 | (1) 8K x 8 |
|-------------------------+-----------------+----------------|
| 256KB (B) 3.3v | (8) 32K x 8 | (1) 8K x 8 |
|-------------------------+-----------------+----------------|
| 512KB mixed voltage | (8) 64K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J9 | J10 | JC1 | JPW1 | JPW2 | JPW3 | JPW4 |
|--------+-----+------+------+-------+-------+-------+-------|
| 256KB | 1 & | 2 & | 1 & | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
| (A) | 2 | 3 | 2 | | | | |
|--------+-----+------+------+-------+-------+-------+-------|
| 256KB | 1 & | 2 & | 1 & | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
| (B) | 2 | 3 | 2 | | | | |
|--------+-----+------+------+-------+-------+-------+-------|
| 512KB | 2 & | 1 & | 2 & | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
| | 3 | 2 | 3 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JK1 | JK2 | JK3 |
|--------+-----------------+----------------+----------------|
| 75MHz | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 90MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 100MHz | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 120MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|--------+-----------------+----------------+----------------|
| 133MHz | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JVR |
|----------------------------+-------------------------------|
| 3.3v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.45v | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 3.6v | Pins 5 & 6 closed |
+------------------------------------------------------------+