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# AMERICAN MEGATRENDS, INC.
EXCALIBUR PCI-II PENTIUM ISA
Processor Pentium
Processor 60/66MHz
Speed
Chip Set AMI
Max. Onboard 128MB
DRAM
Cache 256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2), parallel
port, PS/2 mouse port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Green PC | J1 | IDE interface LED | J28 |
| connector | | | |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | J13 | Serial port 1 | J4 |
|------------------+----------+-------------------+----------|
| Power LED & | J15 | Serial port 2 | J5 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| Speaker | J17 | Parallel port | J7 |
|------------------+----------+-------------------+----------|
| Reset switch | J18 | Floppy drive | J8 |
| | | interface | |
|------------------+----------+-------------------+----------|
| Turbo switch | J20 | IDE interface | J10 |
| | | (secondary) | |
|------------------+----------+-------------------+----------|
| Turbo LED | J24 | IDE interface | J11 |
| | | (primary) | |
|------------------+----------+-------------------+----------|
| Green PC | J25 | 32-bit PCI slots | SL1 - |
| connector | | | SL4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Cache write mode select write | J29 | Open |
| | back | | |
|---+----------------------------------+--------+------------|
| | Cache write mode select write | J29 | Closed |
| | through | | |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | J37 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | J37 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 2 IRQ select IRQ3 | J38 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 2 IRQ select IRQ4 | J38 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 1 IRQ select IRQ4 | J39 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 IRQ select IRQ3 | J39 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board mouse enabled | J40 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board mouse disabled | J40 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J47 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | J48 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | J48 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J51 | Open |
| | 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 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (8) 32K x 8 |
|----------------------------+-------------------------------|
| 512KB | (8) 64K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J21 | J22 | J23 |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 512KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU OUTPUT SIGNAL BUFFER CONFIGURATION |
|------------------------------------------------------------|
| Type | J30 | J32 |
|-----------------------------+---------------+--------------|
| Normal system | Open | Open |
|-----------------------------+---------------+--------------|
| Loaded system | Closed | Open |
|-----------------------------+---------------+--------------|
| Extra loaded system | Closed | Closed |
|------------------------------------------------------------|
| Note: The location of jumpers J30 & J32 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL CONFIGURATION |
|------------------------------------------------------------|
| DMA channel | J43 | J44 |
|------------------+--------------------+--------------------|
| None | Open | Open |
|------------------+--------------------+--------------------|
| DRQ0 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DRQ1 | pins 3 & 4 closed | pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| DRQ3 | pins 5 & 6 closed | pins 5 & 6 closed |
+------------------------------------------------------------+