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# SHUTTLE COMPUTER INTERNATIONAL, INC.
HOT-541 (REV. 1)
Processor Pentium
Processor Speed 75/90/100/120/133MHz
Chip Set Intel
Maximum Onboard 128MB (EDO supported)
Memory
Cache 256/512KB
BIOS AMI/Award
Dimensions 280mm x 220mm
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), VRM connector, cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|----------------------+-------+--------------------+--------|
| Serial port 1 | CN1 | Turbo switch | JP13 |
|----------------------+-------+--------------------+--------|
| Serial port 2 | CN2 | Turbo LED | JP14 |
|----------------------+-------+--------------------+--------|
| Parallel port | CN3 | Green PC connector | JP19 |
|----------------------+-------+--------------------+--------|
| Floppy drive | CN4 | IDE interface LED | JP20 |
| interface | | | |
|----------------------+-------+--------------------+--------|
| IDE interface 2 | CN5 | PS/2 mouse | JP52 |
| | | interface | |
|----------------------+-------+--------------------+--------|
| IDE interface 1 | CN6 | Green PC LED | JP74 |
|----------------------+-------+--------------------+--------|
| Speaker | JP7 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|----------------------+-------+--------------------+--------|
| Power LED & keylock | JP8 | VRM connector | VRM |
|----------------------+-------+--------------------+--------|
| Reset switch | JP12 | Cache slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|------------------------------------+-------+---------------|
| » | Flash BIOS voltage select 5v | JP9 | Open |
|---+--------------------------------+-------+---------------|
| | Flash BIOS voltage select 12v | JP9 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | CMOS memory normal operation | JP11 | Open |
|---+--------------------------------+-------+---------------|
| | CMOS memory clear | JP11 | Closed |
|---+--------------------------------+-------+---------------|
| » | On board I/O enabled | JP59 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | On board I/O disabled | JP59 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | Monitor type select color | JP71 | Closed |
|---+--------------------------------+-------+---------------|
| | Monitor type select monochrome | JP71 | Open |
|---+--------------------------------+-------+---------------|
| » | Password normal operation | JP72 | Open |
|---+--------------------------------+-------+---------------|
| | Password clear | JP72 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 32 | None |
|------------------+--------------------+--------------------|
| 8MB | None | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 32 | None |
|------------------+--------------------+--------------------|
| 16MB | None | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 32 | None |
|------------------+--------------------+--------------------|
| 32MB | None | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 32 | None |
|------------------+--------------------+--------------------|
| 64MB | None | (2) 8M x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 32 | (2) 1M x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 32 | (2) 2M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 32 | (2) 8M x 32 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 32 | (2) 4M x 32 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 32 | (2) 8M x 32 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | SL1 |
|-----------+-----------+-----------+-----------+------------|
| 256KB (A) | None | (8) 32K x | (1) 32K x | Not |
| | | 8 | 8 | installed |
|-----------+-----------+-----------+-----------+------------|
| 256KB (B) | None | None | None | Installed |
|-----------+-----------+-----------+-----------+------------|
| 256KB (C) | (2) 32K x | None | (1) 32K x | Not |
| | 32 | | 8 | installed |
|-----------+-----------+-----------+-----------+------------|
| 512KB (A) | None | (8) 64K x | (1) 32K x | Not |
| | | 8 | 8 | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER |
|------------------------------------------------------------|
| Size | JP4 |
|----------------------------+-------------------------------|
| 256KB (A) | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 512KB (A) | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE VOLTAGE |
|------------------------------------------------------------|
| Setting | JP32 |
|----------------------------+-------------------------------|
| Mixed mode | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3.3v | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED |
|------------------------------------------------------------|
| Setting | JP15 | JP16 |
|--------------------+-------------------+-------------------|
| 75MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 90MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 100MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 120MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 133MHz | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AT BUS CLOCK SPEED |
|------------------------------------------------------------|
| System clock | AT bus clock | JP18 |
|-------------------+-------------------+--------------------|
| 50MHz | 6.25MHz | Pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| 50MHz | 8.33MHz | Pins 1 & 2 closed |
|-------------------+-------------------+--------------------|
| 60MHz | 7.5MHz | Pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| 60MHz | 10MHz | Pins 1 & 2 closed |
|-------------------+-------------------+--------------------|
| 66MHz | 8.25MHz | Pins 2 & 3 closed |
|-------------------+-------------------+--------------------|
| 66MHz | 11MHz | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU MULTIPLIER |
|------------------------------------------------------------|
| Setting | JP3 | JP58 |
|--------------------+-------------------+-------------------|
| 1.5x | Open | Open |
|--------------------+-------------------+-------------------|
| 2x | Closed | Open |
|--------------------+-------------------+-------------------|
| 2.5x | Closed | Closed |
|--------------------+-------------------+-------------------|
| 3x | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE |
|------------------------------------------------------------|
| Setting | J8 | J9 | J10 |
|---------------+--------------+--------------+--------------|
| 3.3v | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 3.4v | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 3.6v | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRM CONNECTOR |
|------------------------------------------------------------|
| Setting | JP50 | JP51 | JP56 | JP57 |
|------------------------+--------+--------+--------+--------|
| On board regulator | 1 & 3, | Open | Closed | Closed |
| installed | 2 & 4 | | | |
|------------------------+--------+--------+--------+--------|
| Add on VRM installed | Open | 1 & 3, | Open | Open |
| at VRM | | 2 & 4 | | |
|------------------------+--------+--------+--------+--------|
| On board regulator and | Open | Open | Closed | Closed |
| add on VRM installed | | | | |
| at VRM | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL |
|------------------------------------------------------------|
| Setting | JP60 | JP61 |
|------------------+--------------------+--------------------|
| DMA1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DMA3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PS/2 MOUSE |
|------------------------------------------------------------|
| Setting | JP52 |
|---------------+--------------------------------------------|
| 12-pin header | Pins 2, 3, 4, 5, 6, 8, 9, 10, 11, 12 |
| | closed |
|---------------+--------------------------------------------|
| 6-pin mini | Pins 1 - 6 closed |
+------------------------------------------------------------+