AMPRO COMPUTERS, INC.
LITTLE BOARD/286
| Device Type | Single board computer |
| Processor | 80286 |
| Processor Speed | 12/16MHz |
| Chip Set | Unidentified |
| Maximum Onboard Memory | 4MB |
| BIOS | Award |
| Dimensions | 203mm x 146mm |
| I/O Options (backplane) | Floppy drive interface, SCSI interface, parallel port, serial interfaces (2) |
| NPU Options | 80287 |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| Power connector | J1 | Parallel port | J6 |
| Serial interface 1 | J2 | SCSI interface | J7 |
| Serial interface 2 | J3 | Floppy drive interface | J8 |
| Speaker | J4/pins 1 & 2 | AT expansion bus | J9 |
| Reset connector | J4/pins 3 & 4 | AT expansion bus | J10 |
| Power LED | J4/pins 5 & 6 | Math coprocessor connector | J11 |
| Power supply | J4/pins 7 & 10 | SIP Resistor network 1 | RP4 |
| Power supply status | J4/pins 11 & 12 | SIP Resistor network 2 | RP5 |
| Keyboard connector | J5 | SIP Resistor network 3 | RP6 |
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
| » | TERMPWR supply disable | W1 |
Open |
| TERMPWR supply enable | W1 |
Closed | |
» |
Factory configured - do not alter | W2 |
Unidentified |
» |
Factory configured - do not alter | W6 |
Unidentified |
| Parallel port IRQ select IRQ7 | W7 | Open | |
| Parallel port IRQ select IRQ5 | W7 | Closed | |
» |
Factory configured - do not alter | W8 |
Open |
» |
Factory configured - do not alter | W9 |
Unidentified |
» |
Factory configured - do not alter | W10 |
Unidentified |
» |
Factory configured - do not alter | W11 |
Unidentified |
» |
Factory configured - do not alter | W14 |
Unidentified |
» |
Factory configured - do not alter | W15 |
Unidentified |
» |
Factory configured - do not alter | W16 |
Unidentified |
» |
Factory configured - do not alter | W17 |
Unidentified |
| Dual-speed operation enabled | W19 | Closed | |
| Dual-speed operation disabled | W19 | Open | |
| Monitor type select color | W22 |
Closed |
|
| Monitor type select monochrome | W22 |
Open |
|
SIMM CONFIGURATION |
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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 |
None |
2.5MB |
(2) 1M x 9 |
(2) 256K x 9 |
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
| 4MB | (2) 2M x 9 | None |
| 4.5MB | (2) 2M x 9 | (2) 256K x 9 |
| 6MB | (2) 2M x 9 | (2) 1M x 9 |
| 8MB | (2) 2M x 9 | (2) 2M x 9 |
CPU TYPE SELECTION |
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| Total Memory | Type |
W3 | W4 | W5 |
| 512KB | 256K | Open | Closed | Closed |
| 640KB | 256K | Closed | Open | Closed |
| 1024KB | 256K | Open | Closed | Closed |
| 512KB | 1M | Closed | Closed | Open |
| 640KB | 1M | Open | Closed | Open |
| 2048KB | 1M | Closed | Open | Open |
| 4096KB | 1M | Open | Open | Open |
ROM DEVICE SELECTION |
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Size |
Type | W12 | W13 | W20 | W21 |
| 8K | Normal EPROM | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
| 16K | Normal EPROM | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
| 32K | Normal EPROM | Pins 1 & 2 closed | Pins 5 & 6 closed | Pins 1 & 2 closed | Pins 5 & 6 closed |
| 128K | Page-addr EPROM | Pins 1 & 2 closed | Pins 3 & 4 closed | Pins 1 & 2 closed | Pins 3 & 4 closed |
RAM DEVICE SELECTION |
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Size |
Type | W12 | W13 | W20 | W21 |
| 32K | 28-pin SRAM | Pins 2 & 3 closed | Pins 3 & 4 closed | Pins 2 & 3 closed | Pins 3 & 4 closed |
| 32K | 28-pin NOVRAM | Pins 2 & 3 closed | Pins 3 & 4 closed | Pins 2 & 3 closed | Pins 3 & 4 closed |
| 32K-512K | NOVRAM cartridge | Pins 2 & 3 closed | Pins 3 & 4 closed | Pins 2 & 3 closed | Pins 3 & 4 closed |
| Note: Memory is located at U32 and U33. | |||||