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# AST RESEARCH, INC.
BRAVO MS P75 (202759-111, 202762-15X)
Processor CX M1/Pentium
Processor Speed 60/75/80/90/100/120/133/150/166MHz
Chip Set Unidentified
Maximum Onboard 128MB
Memory
Cache 256KB
BIOS AST
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), 8514 video pass through connector, VGA
port, riser slot, speaker/line out connector,
microphone connector, line in connector,
CD-ROM audio connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-----------------------+-------+--------------------+-------|
| Speaker/line out | CN1 | IDE interface 1 | J22 |
| connector | | | |
|-----------------------+-------+--------------------+-------|
| Microphone connector | CN2 | IDE interface 2 | J23 |
|-----------------------+-------+--------------------+-------|
| Line in connector | CN3 | Floppy drive | J24 |
| | | interface | |
|-----------------------+-------+--------------------+-------|
| PS/2 mouse port | CN4 | Speaker | J27 |
|-----------------------+-------+--------------------+-------|
| Serial port | CN5 | Chassis fan power | J28 |
|-----------------------+-------+--------------------+-------|
| Serial port | CN6 | Front panel LED’s | J29 |
|-----------------------+-------+--------------------+-------|
| Parallel port | CN7 | Chassis fan power | J32 |
|-----------------------+-------+--------------------+-------|
| VGA port | CN8 | IDE interface LED | J40 |
|-----------------------+-------+--------------------+-------|
| CD audio connector | J4 | Riser slot | SL1 |
|-----------------------+-------+--------------------+-------|
| 8514 video pass | J19 | | |
| through connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|---------------------------------------+-------+------------|
| » | Speaker type select on board | E1 | Closed |
|---+-----------------------------------+-------+------------|
| | Speaker type select external | E1 | Open |
|---+-----------------------------------+-------+------------|
| » | Flash BIOS normal operation | E4 | Closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS force update at boot | E4 | Open |
|---+-----------------------------------+-------+------------|
| » | Password enabled | E5 | Closed |
|---+-----------------------------------+-------+------------|
| | Password disabled | E5 | Open |
|---+-----------------------------------+-------+------------|
| » | Setup access enabled | E7 | Closed |
|---+-----------------------------------+-------+------------|
| | Setup access disabled | E7 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | E12 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | E13 | Closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | E14 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | E17 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | E19 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | J6 | Pins 2 & 4 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | J7 | Pins 2 & 4 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 32 | None |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 32 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 32 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 32 | (2) 4M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 66MB | (2) 8M x 32 | (2) 256K x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 32 | (2) 8M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE |
|------------------------------------------------------------|
| Note: 256KB cache is factory installed and is not |
| configurable. |
+------------------------------------------------------------+
+--------------------------------------------------------------+
| CPU SPEED |
|--------------------------------------------------------------|
|Internal|External|E3| E6 | E8 | E10 | E11 | E18 | E20 |
|--------+--------+--+------+------+------+------+------+------|
| 60MHz | 40MHz |2 |Closed|Closed| Open |Closed| Open | Open |
| | |& | | | | | | |
| | |3 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 75MHz | 50MHz |2 |Closed|Closed| Open | Open | Open |Closed|
| | |& | | | | | | |
| | |3 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 80MHz | 40MHz |1 | Open |Closed| Open |Closed|Closed| Open |
| | |& | | | | | | |
| | |2 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 90MHz | 60MHz |2 |Closed|Closed|Closed| Open |Closed|Closed|
| | |& | | | | | | |
| | |3 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 100MHz | 66MHz |1 | Open |Closed| Open | Open |Closed|Closed|
|(Intel) | |& | | | | | | |
| | |2 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 100MHz | 50MHz |2 |Closed|Closed|Closed|Closed|Closed|Closed|
|(Cyrix) | |& | | | | | | |
| | |3 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 120MHz | 60MHz |1 | Open |Closed|Closed| Open |Closed|Closed|
| | |& | | | | | | |
| | |2 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 133MHz | 66MHz |1 | Open |Closed|Closed|Closed|Closed|Closed|
| | |& | | | | | | |
| | |2 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 150MHz | 60MHz |1 |Closed| Open |Closed| Open |Closed|Closed|
| | |& | | | | | | |
| | |2 | | | | | | |
|--------+--------+--+------+------+------+------+------+------|
| 166MHz | 66MHz |1 |Closed| Open |Closed|Closed|Closed|Closed|
| | |& | | | | | | |
| | |2 | | | | | | |
|--------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+--------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE |
|------------------------------------------------------------|
| Setting | E2 |
|-------------------------------+----------------------------|
| 3.3v - 3.4v | Closed |
|-------------------------------+----------------------------|
| 3.4v - 3.6v | Open |
|------------------------------------------------------------|
| Note: E2 may not be present on all boards. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------+----------------------+----------------------|
| 1MB | (4) 256K x 8 | None |
|--------------+----------------------+----------------------|
| 2MB | (4) 256K x 8 | (4) 256K x 8 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SPEAKER/LINE OUT |
|------------------------------------------------------------|
| Setting | E15 | E16 |
|-----------------------+------------------+-----------------|
| » | Output to speaker | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed |
|---+-------------------+------------------+-----------------|
| | Output to line | Pins 2 & 3 | Pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+