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# AMPRO COMPUTERS, INC.
LITTLE BOARD/PC
Processor 8088
Processor Speed 7MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 640KB
Memory
Maximum Video None
Memory
Cache None
BIOS Ampro
Dimensions 203mm x 146mm
I/O Options Floppy drive interface, SCSI connector,
parallel port, serial ports (2), PC bus
interface
NPU Options NEC uPD72191
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port (V40) | J2 | Keyboard | J5 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Serial port | J3 | Parallel port | J6 |
|-------------------+----------+------------------+----------|
| Speaker | J4 pins | SCSI interface | J7 |
| | 1 & 2 | | |
|-------------------+----------+------------------+----------|
| Reset switch | J4 pins | Floppy drive | J8 |
| | 3 & 4 | interface | |
|-------------------+----------+------------------+----------|
| Power LED | J4 pins | PC bus interface | J9 |
| | 5 & 6 | | |
|-------------------+----------+------------------+----------|
| Auxiliary power | J4 pins | | |
| for PC bus | 7 - 10 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | DMA END (TC) signal disabled | W1 | Open |
|---+---------------------------------+-------+--------------|
| | DMA END (TC) signal enabled | W1 | Closed |
|---+---------------------------------+-------+--------------|
| » | 5v termination power to pin 26 | W4 | Open |
| | of SCSI disabled | | |
|---+---------------------------------+-------+--------------|
| | 5v termination power to pin 26 | W4 | Closed |
| | of SCSI enabled | | |
|---+---------------------------------+-------+--------------|
| » | PC bus IRQ5 disabled | W6 | Open |
|---+---------------------------------+-------+--------------|
| | PC bus IRQ5 enabled | W6 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W9 | Open |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Floppy drive IRQ6 enabled | W10 | Closed |
|---+---------------------------------+-------+--------------|
| | Floppy drive IRQ6 disabled | W10 | Open |
|---+---------------------------------+-------+--------------|
| » | Parallel port LPT select LPT1 | W11 | Open |
|---+---------------------------------+-------+--------------|
| | Parallel port LPT select LPT2 | W11 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W21 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W22 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W26 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W27 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W28 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | NPU not installed | W30 | Open |
|---+---------------------------------+-------+--------------|
| | NPU installed | W30 | Closed |
|---+---------------------------------+-------+--------------|
| » | Monitor type select CGA | W31 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | W31 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | W34 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Write precomp speed select | W39 | Open |
| | 125ns | | |
|---+---------------------------------+-------+--------------|
| | Write precomp speed select | W39 | Closed |
| | 187ns | | |
|---+---------------------------------+-------+--------------|
| » | Drive speed select single speed | W40 | Open |
|---+---------------------------------+-------+--------------|
| | Drive speed select dual speed | W40 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|---------+----------------+----------------+----------------|
| 256KB | SIMM installed | None | None |
|---------+----------------+----------------+----------------|
| 512KB | SIMM installed | SIMM installed | None |
|---------+----------------+----------------+----------------|
| 640KB | SIMM installed | SIMM installed | SIMM installed |
|------------------------------------------------------------|
| Note: The size of the DRAM chips are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W19 | W20 |
|-------------------+--------------------+-------------------|
| 256KB | Closed | Closed |
|-------------------+--------------------+-------------------|
| 512KB | Open | Closed |
|-------------------+--------------------+-------------------|
| 640KB | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PROM SOCKET SELECTION (U26) |
|------------------------------------------------------------|
| Type | Address | W35 | W36 | W37 | W38 |
|------------+----------+---------+--------+--------+--------|
| » | Empty | N/A | Open | Open | Open | N/A |
|---+--------+----------+---------+--------+--------+--------|
| | 2764 | E0000h | Open | Open | Closed | Open |
|---+--------+----------+---------+--------+--------+--------|
| | 2764 | E4000h | Closed | Closed | Open | Open |
|---+--------+----------+---------+--------+--------+--------|
| | 2764 | E8000h | Open | Closed | Open | Open |
|---+--------+----------+---------+--------+--------+--------|
| | 2764 | EC000h | Closed | Open | Open | Open |
|---+--------+----------+---------+--------+--------+--------|
| | 27256 | E0000h | Open | Closed | Closed | Closed |
|---+--------+----------+---------+--------+--------+--------|
| | 27256 | E8000h | Closed | Open | Closed | Closed |
|---+--------+----------+---------+--------+--------+--------|
| | 27512 | E0000h | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MEMORY OPTION SELECTION |
|------------------------------------------------------------|
| Type | W8 | W12 | W13 | W14 | W15 | W16 | W41 |
|----------+-------+-------+-----+-------+------+------+-----|
|» | None | Open | Open |Open | Open | Open | Open |Open |
|--+-------+-------+-------+-----+-------+------+------+-----|
| | 2764 |Closed |Closed |Open | Open | Open | Open |2 & 3|
|--+-------+-------+-------+-----+-------+------+------+-----|
| | 27256 | Open |Closed |Open |Closed |Closed| Open |2 & 3|
|--+-------+-------+-------+-----+-------+------+------+-----|
| | 6264 |Closed |Closed |Open | Open | Open |Closed|Open |
|--+-------+-------+-------+-----+-------+------+------+-----|
| | 62256 | Open |Closed |Open |Closed | Open |Closed|1 & 2|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | W5 | W7 |
|------------------+--------------------+--------------------|
| | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| » | 2 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | W2 | W3 |
|------------------+--------------------+--------------------|
| | 1 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|----+-------------+--------------------+--------------------|
| » | 3 | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | Address | IRQ | W17 | W18 | W29 |
|----------------+---------+------+--------+--------+--------|
| » | COM1 | 3F8h - | IRQ4 | Closed | Open | Open |
| | (3F8h) | 3FF | | | | |
|---+------------+---------+------+--------+--------+--------|
| | COM2 | 2F8h - | IRQ3 | Open | Closed | Closed |
| | (2F8h) | 2FF | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE SELECTION |
|------------------------------------------------------------|
| Drives installed | W32 | W33 |
|--------------------+-------------------+-------------------|
| 1 | Closed | Closed |
|--------------------+-------------------+-------------------|
| 2 | Closed | Open |
|--------------------+-------------------+-------------------|
| 3 (not supported) | Open | Closed |
|--------------------+-------------------+-------------------|
| 4 (not supported) | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI BUS ID SELECTION |
|------------------------------------------------------------|
| ID | W23 | W24 | W25 |
|--------------+---------------+--------------+--------------|
| | 0 | Closed | Closed | Closed |
|---+----------+---------------+--------------+--------------|
| | 1 | Open | Closed | Closed |
|---+----------+---------------+--------------+--------------|
| | 2 | Closed | Open | Closed |
|---+----------+---------------+--------------+--------------|
| | 3 | Open | Open | Closed |
|---+----------+---------------+--------------+--------------|
| | 4 | Closed | Closed | Open |
|---+----------+---------------+--------------+--------------|
| | 5 | Open | Closed | Open |
|---+----------+---------------+--------------+--------------|
| | 6 | Closed | Open | Open |
|---+----------+---------------+--------------+--------------|
| » | 7 | Open | Open | Open |
+------------------------------------------------------------+