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# BIOSTAR MICROTECH INTERNATIONAL, INC.
MB-1425UIV, MB-1433UIV, MB-1440UIV, MB-1450UIV (VER. 01)
Processor CX486SXM6/80486SX/CX486M7/UMC486/AM486DXL/80486DX/
SL80486DX/80486DX/80486DX2/80486DX4/P24D/P24T
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Video Chip None
Set
Maximum 64MB
Onboard
Memory
Maximum None
Video
Memory
Cache 64/128/256KB
BIOS AMI/Award
Dimensions 250mm x 220mm
I/O 32-bit VESA local bus slots (3)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+-------------+-----------------+------------|
| External | JP8 | Turbo switch | JP15 pins |
| battery | | | 14 & 15 |
|---------------+-------------+-----------------+------------|
| Speaker | JP15 pins 1 | +5v ground | JP15 pins |
| | - 4 | | 17 & 18 |
|---------------+-------------+-----------------+------------|
| Power LED & | JP15 pins 5 | Green PC LED | JP24 |
| keylock | - 9 | | |
|---------------+-------------+-----------------+------------|
| Turbo LED | JP15 pins | Green PC | JP25 |
| | 10 & 11 | connector | |
|---------------+-------------+-----------------+------------|
| Reset switch | JP15 pins | 32-bit VESA | SL1 - SL3 |
| | 12 & 13 | local bus slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+-------+---------------|
| | Battery type select external | JP8 | Closed |
|---+--------------------------------+-------+---------------|
| | CMOS memory normal operation | JP8 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | CMOS memory clear | JP8 | Pins 3 & 4 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Jumper information unavailable | JP31 | Unidentified |
|---+--------------------------------+-------+---------------|
| | Jumper information unavailable | JP32 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | None | None | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 1MB | (1) 256K x 36 | None | None |
|------------+---------------+---------------+---------------|
| 1MB | None | (1) 256K x 36 | None |
|------------+---------------+---------------+---------------|
| 2MB | (1) 256K x 36 | None | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 256K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 | None |
|------------+---------------+---------------+---------------|
| 2MB | (1) 512K x 36 | None | None |
|------------+---------------+---------------+---------------|
| 2MB | None | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 3MB | (1) 256K x 36 | (1) 256K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 3MB | None | (1) 512K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 3MB | (1) 256K x 36 | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB | (1) 256K x 36 | (1) 512K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 4MB | None | None | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 4MB | (1) 512K x 36 | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 4MB | (1) 1M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 4MB | None | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 5MB | (1) 1M x 36 | None | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 5MB | None | (1) 1M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 5MB | (1) 256K x 36 | None | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 5MB | None | (1) 256K x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 5MB | (1) 256K x 36 | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 | None |
|------------+---------------+---------------+---------------|
| 6MB | None | (1) 512K x 36 | (4) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 | None |
|------------+---------------+---------------+---------------|
| 6MB | (1) 512K x 36 | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 7MB | (1) 1M x 36 | (1) 512K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 7MB | (1) 256K x 36 | (1) 512K x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 36 | None | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 8MB | None | (1) 1M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 8MB | (1) 2M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 8MB | None | (1) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 9MB | (1) 1M x 36 | (1) 1M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 9MB | (1) 1M x 36 | (1) 256K x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 9MB | (1) 256K x 36 | (1) 1M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 10MB | (1) 1M x 36 | (1) 512K x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 12MB | None | (1) 2M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 12MB | (1) 1M x 36 | (1) 2M x 36 | None |
|------------+---------------+---------------+---------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 | None |
|------------+---------------+---------------+---------------|
| 16MB | None | None | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 16MB | (1) 4M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | None | (1) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 17MB | (1) 4M x 36 | None | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 17MB | None | (1) 4M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 17MB | (1) 256K x 36 | None | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 17MB | None | (1) 256K x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 18MB | (1) 256K x 36 | (1) 4M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 18MB | (1) 4M x 36 | (1) 256K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 19MB | (1) 4M x 36 | (1) 512K x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 20MB | (1) 4M x 36 | None | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 20MB | None | (1) 4M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 20MB | (1) 1M x 36 | None | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 20MB | None | (1) 1M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 21MB | (1) 1M x 36 | (1) 4M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 36 | (1) 4M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 36 | None | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 32MB | None | (1) 4M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 8M x 36 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | None | (1) 8M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 33MB | (1) 8M x 36 | None | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 33MB | None | (1) 8M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (4) 256K x 9 |
|------------+---------------+---------------+---------------|
| 33MB | (1) 4M x 36 | (1) 256K x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 33MB | (1) 256K x 36 | (1) 4M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 34MB | (1) 4M x 36 | (1) 512K x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 36MB | (1) 4M x 36 | (1) 1M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 36MB | None | (1) 8M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (4) 1M x 9 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 48MB | None | (1) 8M x 36 | (4) 4M x 9 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 36 | (1) 8M x 36 | None |
|------------+---------------+---------------+---------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------------+---------------+---------------+--------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|-------------+---------------+---------------+--------------|
| 128KB | (4) 32K x 8 | None | (1) 8K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (B) | (4) 64K x 8 | None | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 | JP9 | JP10 | JP33 |
|-----------+--------+-----------------+------------+--------|
| 64KB | Open | Open | Pins 2 & 3 | Open |
| | | | closed | |
|-----------+--------+-----------------+------------+--------|
| 128KB | Open | Pins 1 & 2 | Pins 1 & 2 | Closed |
| | | closed | closed | |
|-----------+--------+-----------------+------------+--------|
| 256KB (A) | Closed | Pins 2 & 3 | Pins 2 & 3 | Closed |
| | | closed | closed | |
|-----------+--------+-----------------+------------+--------|
| 256KB (B) | Closed | Pins 1 & 2, 3 & | Pins 1 & 2 | Closed |
| | | 4 closed | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP4 | JP5 | JP6 |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP11 | JP12 | JP13 |
|-----------+-----------------+---------------+--------------|
| CX486M6 | 1 & 2, 3 & 4, 5 | 1 & 2, 3 & 4, | 2 & 3 |
| | & 6 | 5 & 6 | |
|-----------+-----------------+---------------+--------------|
| 80486SX | Open | 2 & 3 | 2 & 3 |
|-----------+-----------------+---------------+--------------|
| CX486M7 | 1 & 2, 3 & 4, 5 | 1 & 2, 3 & 4, | 1 & 2, 3 & 4 |
| | & 6 | 5 & 6 | |
|-----------+-----------------+---------------+--------------|
| UMC486 | 2 & 3 | 2 & 3 | 2 & 3 |
|-----------+-----------------+---------------+--------------|
| AM486DXL | 2 & 3 | 2 & 3 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| 80486DX | Open | 2 & 3 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| SL80486DX | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| 80486DX2 | Open | 2 & 3 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| P24D | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 | 1 & 2, 3 & 4 |
|-----------+-----------------+---------------+--------------|
| P24T | 1 & 2 | 1 & 2 | 1 & 2, 3 & 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP17 | JP18 | JP19 | JP35 |
|-----------+-------------+------------+------------+--------|
| CX486M6 | Open | 2 & 3, 4 & | 2 & 3, 4 & | Open |
| | | 5 | 5 | |
|-----------+-------------+------------+------------+--------|
| 80486SX | Open | Open | Open | Closed |
|-----------+-------------+------------+------------+--------|
| CX486M7 | 1 & 2 | 2 & 3, 4 & | 2 & 3 | Open |
| | | 5 | | |
|-----------+-------------+------------+------------+--------|
| UMC486 | 3 & 4 | 1 & 2 | Open | Closed |
|-----------+-------------+------------+------------+--------|
| AM486DXL | 1 & 2, 3 & | 1 & 2 | Open | Closed |
| | 4 | | | |
|-----------+-------------+------------+------------+--------|
| 80486DX | 1 & 2 | Open | Open | Closed |
|-----------+-------------+------------+------------+--------|
| SL80486DX | 1 & 2 | 5 & 6 | 1 & 2, 3 & | Open |
| | | | 4 | |
|-----------+-------------+------------+------------+--------|
| 80486DX2 | 1 & 2 | Open | Open | Closed |
|-----------+-------------+------------+------------+--------|
| 80486DX4 | 1 & 2 | 5 & 6 | 1 & 2, 3 & | Open |
| | | | 4 | |
|-----------+-------------+------------+------------+--------|
| P24D | 1 & 2 | 3 & 4, 5 & | 1 & 2, 3 & | Open |
| | | 6 | 4 | |
|-----------+-------------+------------+------------+--------|
| P24T | 2 & 3 | 5 & 6 | 1 & 2, 3 & | Open |
| | | | 4 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP14 | JP16 | JP27 |
|---------+----------------+----------------+----------------|
| 3.45v | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 5v | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS WAIT STATE SELECTION |
|------------------------------------------------------------|
| Setting | JP22 |
|-------------------------------+----------------------------|
| 0 | Open |
|-------------------------------+----------------------------|
| 1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED SELECTION |
|------------------------------------------------------------|
| Setting | JP21 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| >33 MHz | Closed |
+------------------------------------------------------------+