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# YOUNG MICRO SYSTEMS, INC.
MB-5820
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 250mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| Serial port 2 | CN1 | IR connector | J1 pins 6 |
| | | | - 10 |
|------------------+----------+------------------+-----------|
| Serial port 1 | CN2 | Green PC | J1 pins |
| | | connector | 14 & 15 |
|------------------+----------+------------------+-----------|
| Parallel port | CN3 | Speaker | J2 pins 1 |
| | | | - 4 |
|------------------+----------+------------------+-----------|
| Floppy drive | CN4 | Reset switch | J2 pins 5 |
| interface | | | & 6 |
|------------------+----------+------------------+-----------|
| IDE interface 1 | CN5 | Power LED & | J2 pins 8 |
| | | keylock | - 12 |
|------------------+----------+------------------+-----------|
| IDE interface 2 | CN6 | Turbo LED | J2 pins |
| | | | 14 & 15 |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | CN7 | 32-bit PCI slots | PC1 – PC4 |
|------------------+----------+------------------+-----------|
| IDE interface | J1 pins | USB connector | USB |
| LED | 1 - 4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP6 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP6 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | None | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 2M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 24MB | None | (2) 2M x 36 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 2M x 36 | None | None | (1) 2M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 2M x 36 | None | None | (1) 4M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | None | None | (1) 2M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 8M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | None | None | None | (1) 8M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 4M x 36 | None | None | (1) 4M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | None | None | (1) 4M x | (1) 4M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 72MB | (2) 8M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 80MB | None | (2) 2M x 36 | (1) 8M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 96MB | (2) 4M x 36 | None | None | (1) 8M x |
| | | | | 64 |
|-------+-------------+------------+------------+------------|
| 96MB | (2) 8M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 96MB | None | (2) 8M x | (1) 4M x | None |
| | | 36 | 64 | |
|-------+-------------+------------+------------+------------|
| 128MB | None | None | (1) 8M x | (1) 8M x |
| | | | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 128MB | (2) 8M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (2) 8M x 36 | None | None | (1) 8M x |
| | | | | 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (2) 32K x 32 | Unidentified |
|------------------+--------------------+--------------------|
| 512KB | (2) 64K x 32 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP2|JP3|JP4| JP8 |JP10 |JP11 |
| speed | speed | | | | | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|120MHz | 50MHz | 2x |2 &|2 &|1 &|Closed|2 & 3|1 & 2|
| | | | 3 | 3 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|133MHz | 55MHz | 2x |1 &|2 &|1 &| Open |2 & 3|1 & 2|
| | | | 2 | 3 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|150MHz | 60MHz | 2x |2 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|166MHz | 66MHz | 2x |1 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|200MHz | 75MHz | 2x |1 &|1 &|2 &| Open |2 & 3|1 & 2|
| | | | 2 | 2 | 3 | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP2|JP3|JP4| JP8 |JP10 |JP11 |
| speed | speed | | | | | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
| 75MHz | 50MHz | 1.5x |2 &|2 &|1 &|Closed|1 & 2|1 & 2|
| | | | 3 | 3 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
| 90MHz | 60MHz | 1.5x |2 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|100MHz | 66MHz | 1.5x |1 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|120MHz | 60MHz | 2x |2 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|133MHz | 66MHz | 2x |1 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|150MHz | 60MHz | 2.5x |2 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|166MHz | 66MHz | 2.5x |1 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 2 | 2 | 2 | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP2|JP3|JP4| JP8 |JP10 |JP11 |
| speed | speed | | | | | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
| 75MHz | 50MHz | 1.5x |2 &|2 &|1 &|Closed|1 & 2|1 & 2|
| | | | 3 | 3 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
| 90MHz | 60MHz | 1.5x |2 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|100MHz | 66MHz | 1.5x |1 &|1 &|1 &| Open |1 & 2|1 & 2|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|120MHz | 60MHz | 2x |2 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|133MHz | 66MHz | 2x |1 &|1 &|1 &| Open |2 & 3|1 & 2|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|150MHz | 60MHz | 2.5x |2 &|1 &|1 &| Open |2 & 3|2 & 3|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|166MHz | 66MHz | 2.5x |1 &|1 &|1 &| Open |2 & 3|2 & 3|
| | | | 2 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|180MHz | 60MHz | 3x |2 &|1 &|1 &| Open |1 & 2|2 & 3|
| | | | 3 | 2 | 2 | | | |
|-------+----------+----------+---+---+---+------+-----+-----|
|200MHz | 66MHz | 3x |1 &|1 &|1 &| Open |1 & 2|2 & 3|
| | | | 2 | 2 | 2 | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP7 | JP9 |
|-----------------+--------------+---------------------------|
| 3.38v | 2 & 4 | 1 & 2, 4 & 5, 7 & 8 |
|-----------------+--------------+---------------------------|
| 3.52v | 4 & 6 | 1 & 2, 4 & 5, 7 & 8 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP7 | JP9 |
|-------------+-----------+----------+-----------------------|
| 3.38v | 2.5v | 1 & 3 | 2 & 3, 5 & 6, 7 & 9 |
|-------------+-----------+----------+-----------------------|
| 3.38v | 2.8v | 3 & 5 | 2 & 3, 5 & 6, 7 & 9 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+