(TXT) View Source
# VTECH INDUSTRIES, INC.
MB520ND
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 254mm 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), cache slot, IR connector, USB
connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Floppy drive | CN1 | IR connector | J10 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN2 | Speaker | J11 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN3 | Reset switch | J19 |
|-------------------+----------+------------------+----------|
| USB connector | J1 | IDE interface | JP14 |
| | | LED | |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J2 | Green PC | JP15 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| Power LED & | J3 | Chassis fan | JP18 |
| keylock | | power | |
|-------------------+----------+------------------+----------|
| Serial port 1 | J6 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Serial port 2 | J7 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Parallel port | J9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | Flash BIOS type select | JP9 | Pins 1 & 2 |
| | SST/Winbond/ATMEL/MX | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS type select Intel | JP9 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | JP10 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 5v | JP10 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP16 | Open |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP16 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+---------------------+---------------------|
| 8MB | (2) 1M x 36 | None |
|----------------+---------------------+---------------------|
| 16MB | (2) 2M x 36 | None |
|----------------+---------------------+---------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 32MB | (2) 4M x 36 | None |
|----------------+---------------------+---------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 64MB | (2) 8M x 36 | None |
|----------------+---------------------+---------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------------------------------------------------|
| Note: Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|--------------+--------------------+------------------------|
| 256KB | None | 256KB module installed |
|--------------+--------------------+------------------------|
| 256KB | (2) 32K x 32 | Not installed |
|--------------+--------------------+------------------------|
| 512KB | (2) 32K x 32 | 256KB module installed |
|--------------+--------------------+------------------------|
| 512KB | (2) 64K x 32 | Not installed |
|--------------+--------------------+------------------------|
| 512KB | None | 512KB module installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 50MHz | 2x | 1 & 2 | 2 & 3 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 55MHz | 2x | 1 & 2 | 2 & 3 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 180MHz | 60MHz | 3x | 2 & 3 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 2 & 3 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J13 | J14 | J15 | J16 |
|----------+------------+------------+-----------+-----------|
| CX 6X86 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & | Pins 2 & |
| | closed | closed | 3 closed | 3 closed |
|----------+------------+------------+-----------+-----------|
| AM K5 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & | Pins 2 & |
| (B, C, | closed | closed | 3 closed | 3 closed |
| F) | | | | |
|----------+------------+------------+-----------+-----------|
| AM K5 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & | Pins 1 & |
| (H, J, | closed | closed | 2 closed | 2 closed |
| K) | | | | |
|----------+------------+------------+-----------+-----------|
| P54C | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & | Pins 2 & |
| | closed | closed | 3 closed | 3 closed |
|----------+------------+------------+-----------+-----------|
| P55C | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & | Pins 1 & |
| | closed | closed | 2 closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP5 | JP17 |
|------------------+--------------------+--------------------|
| 3.38v | Pins 7 & 8 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 3.52v | Pins 9 & 10 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP5 | JP17 |
|----------+---------+-------------------+-------------------|
| 3.38v | 2.5v | Pins 1 & 2 closed | Pins 2 & 3 closed |
|----------+---------+-------------------+-------------------|
| 3.38v | 2.7v | Pins 3 & 4 closed | Pins 2 & 3 closed |
|----------+---------+-------------------+-------------------|
| 3.38v | 2.93v | Pins 5 & 6 closed | Pins 2 & 3 closed |
|----------+---------+-------------------+-------------------|
| 3.52v | 2.5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| 3.52v | 2.7v | Pins 3 & 4 closed | Pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| 3.52v | 2.93v | Pins 5 & 6 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
-