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# AMPRO COMPUTERS, INC.
LITTLE BOARD/386SX
Processor 80386SX
Processor 25MHz
Speed
Chip Set Ampro
Max. onboard 16MB
DRAM
Cache None
BIOS Award
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface, parallel
port, SCSI connector, serial ports (2)
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Power connector | J1 | SCSI interface | J7 |
|------------------+----------+-------------------+----------|
| Serial port | J2 | Floppy drive | J8 |
| (COM2) | | interface | |
|------------------+----------+-------------------+----------|
| Serial port | J3 | IDE interface | J11 |
| (COM1) | | | |
|------------------+----------+-------------------+----------|
| Keyboard | J5 | Power J1-1 to | W7 |
| | | +12V BUS | |
|------------------+----------+-------------------+----------|
| Parallel port | J6 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | SCSI controller enabled | W1 | Closed |
|---+-----------------------------+---------------+----------|
| | SCSI controller disabled | W1 | Open |
|---+-----------------------------+---------------+----------|
| » | SCSI controller select IRQ3 | W2 & W3 | Closed |
|---+-----------------------------+---------------+----------|
| | SCSI controller select none | W2 & W3 | Open |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | W4 | Open |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | W5 | Open |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | SCSI termination power | W6 | Closed |
| | enabled | | |
|---+-----------------------------+---------------+----------|
| | SCSI termination power none | W6 | Open |
|---+-----------------------------+---------------+----------|
| » | Floppy clock select 16MHz | W10 | Closed |
|---+-----------------------------+---------------+----------|
| | Floppy clock select none | W10 | Open |
|---+-----------------------------+---------------+----------|
| » | Flash EPROM programming | W16 | Open |
| | power +12V to Byte-wide | | |
|---+-----------------------------+---------------+----------|
| | Flash EPROm programming | W16 | Closed |
| | power disabled | | |
|---+-----------------------------+---------------+----------|
| » | Watchdog timer output | W17 | Open |
| | selection | | |
|---+-----------------------------+---------------+----------|
| | Watchdog timer output none | W17 | Closed |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | W18 | Open |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Floppy PCVAL selection | W19 | Open |
|---+-----------------------------+---------------+----------|
| | Floppy PCVAL none | W19 | Closed |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | W21 | N/A |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | W22 | N/A |
| | alter | | |
|---+-----------------------------+---------------+----------|
| » | Power fail NMI enabled | W23 | Open |
|---+-----------------------------+---------------+----------|
| | Power fail NMI none | W23 | Closed |
|---+-----------------------------+---------------+----------|
| » | Parallel port interrrupt | W24 | Open |
| | option select via setup | | |
|---+-----------------------------+---------------+----------|
| | Parallel port interrrupt | W24 | Closed |
| | option none | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (2) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 2MB | (2) 1M x 9 | (2) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (2) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 9 | (2) 4M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (2) 4M x 9 | (2) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EPROM CONFIGURATION (S0) |
|------------------------------------------------------------|
| EPROM | W8 | W9 | W25 |
|-----------+--------+-------------------------+-------------|
| 27C256 | Open | pins 7 & 8, 10 & 11 | pins 1 & 2 |
|-----------+--------+-------------------------+-------------|
| 27C512 | Open | pins 1 & 4, 7 & 8, 10 & | pins 1 & 2 |
| | | 11 | |
|-----------+--------+-------------------------+-------------|
| 27C010 | Open | pins 1 & 4, 2 & 5, 6 & | pins 1 & 2 |
| | | 9, 7 & 8 | |
|-----------+--------+-------------------------+-------------|
| 27C020 | Open | pins 1 & 4, 2 & 5, 6 & | pins 1 & 2 |
| | | 9, 7 & 8, 11 & 12 | |
|-----------+--------+-------------------------+-------------|
| 27C040 | Open | pins 1 & 4, 2 & 3, 6 & | pins 1 & 2 |
| | | 9, 7 & 8, 11 & 12 | |
|-----------+--------+-------------------------+-------------|
| 27C080 | Closed | pins 1 & 4, 2 & 3, 7 & | pins 1 & 2 |
| | | 8, 11 & 12 | |
|-----------+--------+-------------------------+-------------|
| 62256 | Open | pins 4 & 7, 5 & 8, 10 & | pins 1 & 2 |
| | | 11 | or 2 & 3 |
|-----------+--------+-------------------------+-------------|
| 628128 | Open | pins 1 & 2, 4 & 7, 5 & | pins 1 & 2 |
| | | 8, 10 & 11 | or 2 & 3 |
|-----------+--------+-------------------------+-------------|
| uPD434000 | Open | pins 1 & 2, 3 & 6, 4 & | pins 1 & 2 |
| | | 7, 5 & 8, 11 & 12 | or 2 & 3 |
|-----------+--------+-------------------------+-------------|
| 28F256 | Open | pins 2 & 5, 6 & 9, 7 & | pins 1 & 2 |
| | | 8 | |
|-----------+--------+-------------------------+-------------|
| 28F512 | Open | pins 1 & 4, 2 & 5, 6 & | pins 1 & 2 |
| | | 9, 7 & 8 | |
|-----------+--------+-------------------------+-------------|
| 28F010 | Open | pins 1 & 4, 2 & 5, 6 & | pins 1 & 2 |
| | | 9, 7 & 8 | |
|-----------+--------+-------------------------+-------------|
| 28F020 | Open | pins 1 & 4, 2 & 5, 6 & | pins 1 & 2 |
| | | 9, 7 & 8, 11 & 12 | |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EPROM/FLASH EPROM CONFIGURATION (S1 & S2) |
|------------------------------------------------------------|
| EPROM | W12 | W13 | W14 | W15 |
|-------+-------------+------------+------------+------------|
| 128KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+