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# AMERICAN MEGATRENDS, INC.
PEGASUS
Processor Pentium II
Processor Speed 200/233/266/300MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 768MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB (located on Pentium II CPU)
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 interface, serial
ports (2), IR connector, VRM connector, USB
connectors (2), CPU Slot 1
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J1 | Power LED & | J25 |
| interface | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 2 | J2 | Reset switch | J27 |
|-------------------+----------+------------------+----------|
| Serial port 1 | J3 | Turbo LED | J28 |
|-------------------+----------+------------------+----------|
| Floppy drive | J4 | Green PC | J30 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| Chassis fan power | J5 | IDE interface | J31 |
| | | LED | |
|-------------------+----------+------------------+----------|
| CPU fan power | J6 | Speaker | J32 |
|-------------------+----------+------------------+----------|
| Parallel port | J8 | Chassis fan | J33 |
| | | power | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J9 | IR connector | J34 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J11 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| USB connector 2 | J14 | CPU Slot 1 | SL1 |
|-------------------+----------+------------------+----------|
| USB connector 1 | J15 | VRM connector | VRM |
|-------------------+----------+------------------+----------|
| Chassis door | J23 | | |
| intrusion | | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J20 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J24 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J26 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | J29 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J29 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 8MB | (2) 1M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | (2) 2M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (2) 4M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 56MB | (2) 4M x 36 | (2) 2M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (2) 8M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 88MB | (2) 8M x 36 | (2) 2M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 2M x 36 | (2) 2M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|---------+------------------+---------------+---------------|
| 104MB | (2) 8M x 36 | (2) 4M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 112MB | (2) 8M x 36 | (2) 4M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|---------+------------------+---------------+---------------|
| 128MB | (2) 16M x 36 | None | None |
|---------+------------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 | None |
|---------+------------------+---------------+---------------|
| 136MB | (2) 8M x 36 | (2) 8M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 | None |
|---------+------------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 | None |
|---------+------------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 | None |
|---------+------------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 168MB | (2) 16M x 36 | (2) 4M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 176MB | (2) 16M x 36 | (2) 4M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 | None |
|---------+------------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|---------+------------------+---------------+---------------|
| 200MB | (2) 16M x 36 | (2) 8M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 208MB | (2) 16M x 36 | (2) 8M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 224MB | (2) 16M x 36 | (2) 8M x 36 | (2) 4M x 36 |
|---------+------------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 | None |
|---------+------------------+---------------+---------------|
| 256MB | (2) 16M x 36 | (2) 8M x 36 | (2) 8M x 36 |
|---------+------------------+---------------+---------------|
| 256MB | (2) 32M x 36 | None | None |
|---------+------------------+---------------+---------------|
| 264MB | (2) 16M x 36 | (2) 16M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 272MB | (2) 16M x 36 | (2) 16M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 288MB | (2) 16M x 36 | (2) 16M x 36 | (2) 4M x 36 |
|---------+------------------+---------------+---------------|
| 320MB | (2) 16M x 36 | (2) 16M x 36 | (2) 8M x 36 |
|---------+------------------+---------------+---------------|
| 384MB | (2) 16M x 36 | (2) 16M x 36 | (2) 16M x 36 |
|---------+------------------+---------------+---------------|
| 512MB | (2) 32M x 36 | (2) 32M x 36 | None |
|---------+------------------+---------------+---------------|
| 520MB | (2) 32M x 36 | (2) 32M x 36 | (2) 1M x 36 |
|---------+------------------+---------------+---------------|
| 528MB | (2) 32M x 36 | (2) 32M x 36 | (2) 2M x 36 |
|---------+------------------+---------------+---------------|
| 544MB | (2) 32M x 36 | (2) 32M x 36 | (2) 4M x 36 |
|---------+------------------+---------------+---------------|
| 576MB | (2) 32M x 36 | (2) 32M x 36 | (2) 8M x 36 |
|---------+------------------+---------------+---------------|
| 640MB | (2) 32M x 36 | (2) 32M x 36 | (2) 16M x 36 |
|---------+------------------+---------------+---------------|
| 768MB | (2) 32M x 36 | (2) 32M x 36 | (2) 32M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 32 |
| SIMMs. Do not use 16M x 36 SIMMs that have more than 36 |
| chips per SIMM. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB/512KB cache is located on the Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU speed | Clock | Multiplier | J16 | J17 | J18 |
| | speed | | | | |
|-----------+----------+------------+--------+------+--------|
| 200MHz | 66MHz | 3x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 233MHz | 66MHz | 3.5x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 266MHz | 66MHz | 4x | Closed | Open | Closed |
|-----------+----------+------------+--------+------+--------|
| 300MHz | 66MHz | 4.5x | Closed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CON’T) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | J19 | J21 | J22 |
| speed | speed | | | | |
|---------+--------+------------+------+-------+-------------|
| 200MHz | 66MHz | 3x | Open | 1 & 2 | 1 & 2, 5 & |
| | | | | | 6, 7 & 8 |
|---------+--------+------------+------+-------+-------------|
| 233MHz | 66MHz | 3.5x | Open | 1 & 2 | 5 & 6, 7 & |
| | | | | | 8 |
|---------+--------+------------+------+-------+-------------|
| 266MHz | 66MHz | 4x | Open | 1 & 2 | 1 & 2, 3 & |
| | | | | | 4, 7 & 8 |
|---------+--------+------------+------+-------+-------------|
| 300MHz | 66MHz | 4.5x | Open | 1 & 2 | 3 & 4, 7 & |
| | | | | | 8 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J12 |
|-----------+------------------------------------------------|
| | 1.8v | Pins 1 & 6, 2 & 7, 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 1.85v | Pins 1 & 6, 2 & 7, 4 & 9, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 1.9v | Pins 1 & 6, 2 & 7, 3 & 8 closed |
|---+-------+------------------------------------------------|
| | 1.95v | Pins 1 & 6, 2 & 7, 3 & 8, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 2.0v | Pins 1 & 6, 2 & 7, 3 & 8, 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 2.05v | Pins 1 & 6, 2 & 7, 3 & 8, 4 & 9, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 2.1v | Pins 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 2.2v | Pins 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 2.3v | Pins 4 & 9, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 2.4v | Pins 3 & 8 closed |
|---+-------+------------------------------------------------|
| | 2.5v | Pins 3 & 8, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 2.6v | Pins 3 & 8, 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 2.7v | Pins 3 & 8, 4 & 9, 5 & 10 closed |
|---+-------+------------------------------------------------|
| » | 2.8v | Pins 2 & 7 closed |
|---+-------+------------------------------------------------|
| | 2.9v | Pins 2 & 7, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 3.0v | Pins 2 & 7, 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 3.1v | Pins 2 & 7, 4 & 9, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 3.2v | Pins 2 & 7, 3 & 8 closed |
|---+-------+------------------------------------------------|
| | 3.3v | Pins 2 & 7, 3 & 8, 5 & 10 closed |
|---+-------+------------------------------------------------|
| | 3.4v | Pins 2 & 7, 3 & 8, 4 & 9 closed |
|---+-------+------------------------------------------------|
| | 3.5v | Pins 2 & 7, 3 & 8, 4 & 9, 5 & 10 closed |
+------------------------------------------------------------+