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# AST RESEARCH, INC.
BRAVO LC (KING P) P/75 (202766-101)
Processor CX487SX/80486SX/CX486DX/80486DX/CX486DX2/80486DX2/80486DX4/
Pentium Overdrive/CX5X86
Processor 20/25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Max. 128MB
Onboard
DRAM
Cache 128/256KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Floppy drive interface, green PC connector, IDE interfaces (2),
Options parallel port, PS/2 mouse port, serial ports (2), 8514 video
pass through connector, VGA port, riser slot
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | CN2 | Turbo LED (not | J10 |
| | | used) | |
|------------------+----------+-------------------+----------|
| Serial port | CN3 | Turbo switch (not | J12 pins |
| | | used) | 2 & 3 |
|------------------+----------+-------------------+----------|
| Serial port | CN4 | Control console | J14 |
| | | power LED | |
|------------------+----------+-------------------+----------|
| Parallel port | CN5 | Reset switch (not | J15 |
| | | used) | |
|------------------+----------+-------------------+----------|
| VGA port | CN6 | 8514 video pass | J16 |
| | | through connector | |
|------------------+----------+-------------------+----------|
| IDE interface 1 | J3 | Speaker | J18 pins |
| | | | 1 & 2 |
|------------------+----------+-------------------+----------|
| Floppy drive | J5 | Control console | JP15 |
| interface | | hard drive LED | |
|------------------+----------+-------------------+----------|
| IDE interface 2 | J7 | Riser slot | SL1 |
|------------------+----------+-------------------+----------|
| Green PC | J9 | | |
| connector (not | | | |
| used) | | | |
|------------------------------------------------------------|
| Note: The locations of J9 & J10 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| » | Factory configured - do not alter | J11 | N/A |
|---+-----------------------------------+---------+----------|
| » | Password enabled | JP2 | Closed |
|---+-----------------------------------+---------+----------|
| | Password disabled | JP2 | Open |
|---+-----------------------------------+---------+----------|
| » | On board video enabled | JP29 | Closed |
|---+-----------------------------------+---------+----------|
| | On board video disabled | JP29 | Open |
|---+-----------------------------------+---------+----------|
| » | Monitor type select color | JP30 | Closed |
|---+-----------------------------------+---------+----------|
| | Monitor type select monochrome | JP30 | Open |
|---+-----------------------------------+---------+----------|
| » | Flash BIOS normal operation | JP31 | Closed |
|---+-----------------------------------+---------+----------|
| | Flash BIOS force update at boot | JP31 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 32 | (1) 1M x 32 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 32 | (1) 1M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 32 | (1) 1M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 32 | (1) 1M x 32 | (1) 1M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 32 | (1) 1M x 32 | (1) 1M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 2M x 32 | (1) 2M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 2M x 32 | (1) 2M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 2M x 32 | (1) 2M x 32 | (1) 1M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 32 | (1) 2M x 32 | (1) 1M x | (1) 1M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 32 | (1) 2M x 32 | (1) 2M x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 2M x 32 | (1) 2M x 32 | (1) 2M x | (1) 2M x |
| | | | 32 | 32 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 32 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 32 | (1) 4M x 32 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 32 | (1) 4M x 32 | (1) 256K x | NONE |
| | | | 32 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 32 | (1) 4M x 32 | (1) 256K x | (1) 256K x |
| | | | 32 | 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+----------+--------------+------------|
| 36MB | (1) 4M x 32 | (1) 4M x | (1) 1M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 40MB | (1) 4M x 32 | (1) 4M x | (1) 1M x 32 | (1) 1M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 40MB | (1) 4M x 32 | (1) 4M x | (1) 2M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 48MB | (1) 4M x 32 | (1) 4M x | (1) 2M x 32 | (1) 2M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 48MB | (1) 4M x 32 | (1) 4M x | (1) 4M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 64MB | (1) 4M x 32 | (1) 4M x | (1) 4M x 32 | (1) 4M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 64MB | (1) 8M x 32 | (1) 8M x | NONE | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 66MB | (1) 8M x 32 | (1) 8M x | (1) 256K x | (1) 256K x |
| | | 32 | 32 | 32 |
|-------+-------------+----------+--------------+------------|
| 68MB | (1) 8M x 32 | (1) 8M x | (1) 1M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 72MB | (1) 8M x 32 | (1) 8M x | (1) 1M x 32 | (1) 1M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 72MB | (1) 8M x 32 | (1) 8M x | (1) 2M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 80MB | (1) 8M x 32 | (1) 8M x | (1) 2M x 32 | (1) 2M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 80MB | (1) 8M x 32 | (1) 8M x | (1) 4M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 96MB | (1) 8M x 32 | (1) 8M x | (1) 4M x 32 | (1) 4M x |
| | | 32 | | 32 |
|-------+-------------+----------+--------------+------------|
| 96MB | (1) 8M x 32 | (1) 8M x | (1) 8M x 32 | NONE |
| | | 32 | | |
|-------+-------------+----------+--------------+------------|
| 128MB | (1) 8M x 32 | (1) 8M x | (1) 8M x 32 | (1) 8M x |
| | | 32 | | 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (4) 64K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP16 | JP17 |
|------------------+--------------------+--------------------|
| 128KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP3 | JP4 | JP5 | JP6 | JP7 |
|------------+---------+---------+---------+---------+-------|
| Cyrix 486 | Closed | Open | Open | Open | Open |
|------------+---------+---------+---------+---------+-------|
| Intel 486 | Open | Closed | Closed | Closed | Open |
|------------+---------+---------+---------+---------+-------|
| Cyrix 5x86 | Open | Closed | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP8 | JP9 | JP20 | JP21 | JP22 | JP23 |
|----------+--------+--------+--------+------+--------+------|
| Cyrix | Open | Closed | Closed | Open | Closed | Open |
| 486 | | | | | | |
|----------+--------+--------+--------+------+--------+------|
| Intel | Closed | Open | Open | Open | Open | Open |
| 486 | | | | | | |
|----------+--------+--------+--------+------+--------+------|
| Cyrix | Closed | Open | Open | Open | Open | Open |
| 5x86 | | | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP11 |
|----------------------------+-------------------------------|
| SX | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| DX | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP19 |
|------------------+--------------------+--------------------|
| 20MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 25MHz | pins 1 & 2 closed | pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 33MHz | pins 1 & 2 closed | pins 5 & 6 closed |
|------------------+--------------------+--------------------|
| 50iMHz | pins 1 & 2 closed | pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 66iMHz | pins 1 & 2 closed | pins 5 & 6 closed |
|------------------+--------------------+--------------------|
| 75iMHz | pins 1 & 2 closed | pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| 100iMHz | pins 1 & 2 closed | pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | V1 | V2 | V3 | V4 |
|------------+-----------+-----------+-----------+-----------|
| 3.45v | Open | Open | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 5v | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 512K x 8 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (2) 512K x 8 | (2) 512K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: The location of pin 1 on the jumpers is |
| unidentified. |
+------------------------------------------------------------+