TEXT View Source
# BIOSTAR MICROTECH INTERNATIONAL CORPORATION
MB-1433/1440/1450 UCV-A
Processor CX486S/80486SX/80487SX/AMD80486DX/80486DX/ODP486SX/80486DX2/
Pentium Overdrive
Processor 20/25/33/40(internal)/50(internal)/50/66(internal)MHz
Speed
Chip Set VLSI
Max. 64MB
Onboard
DRAM
Cache 32/64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Speaker | J1 | Turbo switch | J5 |
|---------------+----------+----------------------+----------|
| Power LED & | J2 | 5v DC ground | J6 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Turbo LED | J3 | External battery | JP8 |
|---------------+----------+----------------------+----------|
| Reset switch | J4 | 32-bit VESA Local | SL1, |
| | | bus slots | SL2, SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+----------+------------|
| » | CMOS memory normal operation | JP8 | pins 2 & 3 |
| | | | closed |
|----+-------------------------------+----------+------------|
| | CMOS memory clear | JP8 | pins 3 & 4 |
| | | | closed |
|----+-------------------------------+----------+------------|
| » | Power good signal detect from | JP11 | pins 1 & 2 |
| | power supply | | closed |
|----+-------------------------------+----------+------------|
| | Power good signal detect from | JP11 | pins 2 & 3 |
| | board | | closed |
|----+-------------------------------+----------+------------|
| » | CPU type select PGA or PQFP | JP12 | pins 2 & 3 |
| | on board | | closed |
|----+-------------------------------+----------+------------|
| | CPU type select PQFP and PGA | JP12 | pins 1 & 2 |
| | on board - disables PQFP | | closed |
|----+-------------------------------+----------+------------|
| » | Monitor type select | JP14 | pins 1 & 2 |
| | monochrome | | closed |
|----+-------------------------------+----------+------------|
| | Monitor type select color | JP14 | pins 2 & 3 |
| | | | closed |
|----+-------------------------------+----------+------------|
| » | Weitek Power 9000 VGA card | JP28 | pins 1 & 2 |
| | not installed | | closed |
|----+-------------------------------+----------+------------|
| | Weitek Power 9000 VGA card | JP28 | pins 2 & 3 |
| | installed | | closed |
|------------------------------------------------------------|
| Note: External battery and CMOS memory configuration share |
| the same jumper. Pins 2 & 3 on JP8 must be closed in order |
| for system to function This is done with either a jumper |
| or external battery installed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 1M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 4M x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 | JP6 | JP7 | JP9 | JP10 |
|----------+----------+---------+---------+---------+--------|
| 32KB | 2 & 3 | Open | Open | Open | Open |
|----------+----------+---------+---------+---------+--------|
| 64KB | 1 & 2 | Open | Open | Closed | Open |
|----------+----------+---------+---------+---------+--------|
| 128KB | 2 & 3 | 2 & 3 | Closed | Closed | Open |
|----------+----------+---------+---------+---------+--------|
| 256KB | 1 & 2 | 1 & 2 | Closed | Closed | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP16 | JP17 |
|--------------------+-------------------+-------------------|
| 80486SX/CX486S | pins 1 & 2 closed | pins 2 & 3 closed |
|--------------------+-------------------+-------------------|
| 80487SX/ODP80486SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|--------------------+-------------------+-------------------|
| 80486DX/DX2 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|--------------------+-------------------+-------------------|
| Pentium Overdrive | pins 1 & 2 closed | pins 1 & 2, 3 & 4 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP21 | JP22 | JP23 | JP27 |
|------------+-----------+-----------+-----------+-----------|
| 25MHz | Closed | Open | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 33MHz | Closed | Closed | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 40MHz | Open | Open | Closed | Closed |
|------------+-----------+-----------+-----------+-----------|
| 50MHz | Open | Closed | Open | Closed |
|------------+-----------+-----------+-----------+-----------|
| 50iMHz | Closed | Open | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 66iMHz | Closed | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA CLOCK CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP25 | JP26 | JP29 | JP30 |
| | (SL2) | (SL1) | (SL3) | (SL2 & |
| | | | | SL3) |
|--------------+-----------+-----------+----------+----------|
| Synchronous | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|--------------+-----------+-----------+----------+----------|
| Asynchronous | pins 2 & | pins 2 & | pins 2 & | pins 2 & |
| | 3 closed | 3 closed | 3 closed | 3 closed |
|------------------------------------------------------------|
| Note: If pins 1 & 2 are closed on JP30, JP25 must remain |
| open. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP19 | JP20 |
|--------------+------------------------+--------------------|
| Synchronous | pins 2 & 3 closed | pins 1 & 2 closed |
|--------------+------------------------+--------------------|
| Asynchronous | pins 1 & 2 closed | pins 2 & 3 closed |
| | (40MHz/50MHz only) | (50MHz only) |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS CONFIGURATION (CIRRUS LOGIC VER. AB) |
|------------------------------------------------------------|
| Mode | JP19 | JP20 |
|----------+---------------------------+---------------------|
| 25MHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 33MHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 40MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 50MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 50iMHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 66iMHz | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------------------------------------------------|
| Note: These settings are used only if a Cirrus Logic |
| version AB video card is installed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA BUS CONFIGURATION (CIRRUS LOGIC VER. AC) |
|------------------------------------------------------------|
| Mode | JP19 | JP20 |
|----------+---------------------------+---------------------|
| 25MHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 33MHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 40MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|----------+---------------------------+---------------------|
| 50MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|----------+---------------------------+---------------------|
| 50iMHz | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------------------------+---------------------|
| 66iMHz | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------------------------------------------------|
| Note: These settings are used only if a Cirrus Logic |
| version AC video card is installed. |
+------------------------------------------------------------+