AT TERMINAL Motherboard Settings and Configuration
SANTA CLARA SYSTEMS, INC.
AT TERMINAL
Processor | 80286 |
Processor Speed | Unidentified |
Chip Set | Unidentified |
Video Chip Set | None |
Maximum Onboard Memory | 1MB |
Maximum Video Memory | None |
Cache | None |
BIOS | Unidentified |
Dimensions | 355mm x 304mm |
I/O Options | Network connectors (2) |
NPU Options | 80287 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Network connector | CN1 | Network connector | CN2 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | W1/3 | Unidentified |
» | Factory configured - do not alter | W1/4 | Unidentified |
Internal Network Data Bus enabled | W12 | Closed | |
Internal Network Data Bus disabled | W12 | Open | |
Note: The number of jumpers that comprise W12 are unidentified. | |||
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
256KB(A) | (18) 4164 | (18) 4164 |
256KB(B) | (18) 41256 | None |
640KB | (18) 41256 | (18) 4164 |
1MB | (18) 41256 | (18) 41256 |
Note: The location of banks 0 & 1 are unidentified. | ||
DRAM SWITCH CONFIGURATION | ||
Size | W1/1 | W1/2 |
256KB(A) | On | On |
256KB(B) | On | Off |
640KB | Off | On |
1MB | Off | Off |
DMA CHANNEL SELECTION | |||
Channel | W6 | W7 | |
0 | Pins 1 & 2 closed | Pins 1 & 2 closed | |
| » | 1 | Pins 3 & 4 closed | Pins 3 & 4 closed |
2 | Pins 5 & 6 closed | Pins 5 & 6 closed | |
3 | Pins 7 & 8 closed | Pins 7 & 8 closed | |
IRQ SELECTION (TXD/RXD) | ||
IRQ | W8 | |
| » | 2 | Pins 1 & 2 closed |
3 | Pins 3 & 4 closed | |
4 | Pins 5 & 6 closed | |
5 | Pins 7 & 8 closed | |
IRQ SELECTION (TIMEOUT) | ||
IRQ | W11 | |
2 | Pins 1 & 2 closed | |
| » | 3 | Pins 3 & 4 closed |
4 | Pins 5 & 6 closed | |
5 | Pins 7 & 8 closed | |
PORT ADDRESS SELECTION | |||
Setting | W9 | W10 | |
2XXh | Pins 2 & 3 closed | N/A | |
| » | 3XXh | Pins 1 & 2 closed | N/A |
| » | X8Fh | N/A | Pins 1 & 2 closed |
X9Fh | N/A | Pins 2 & 3 closed | |
NETWORK ID SELECTION | ||||||||
ID | U189/1 | U189/2 | U189/3 | U189/4 | U189/5 | U189/6 | U189/7 | U189/8 |
0011 | Off | Off | Off | Off | Off | Off | Off | Off |
0012 | Off | Off | Off | Off | Off | Off | Off | Off |
0013 | Off | Off | Off | Off | Off | Off | Off | Off |
0014 | Off | Off | Off | Off | Off | Off | Off | Off |
0015 | Off | Off | Off | Off | Off | Off | Off | Off |
0016 | Off | Off | Off | Off | Off | Off | Off | Off |
0017 | Off | Off | Off | Off | Off | Off | Off | Off |
0018 | Off | Off | Off | Off | Off | Off | Off | Off |
NETWORK ID SELECTION (CON’T) | ||||||||
ID | U192/1 | U192/2 | U192/3 | U192/4 | U192/5 | U192/6 | U192/7 | U192/8 |
0011 | Off | Off | Off | On | Off | Off | Off | On |
0012 | Off | Off | Off | On | Off | Off | On | Off |
0013 | Off | Off | Off | On | Off | Off | On | On |
0014 | Off | Off | Off | On | Off | On | Off | Off |
0015 | Off | Off | Off | On | Off | On | Off | On |
0016 | Off | Off | Off | On | Off | On | On | Off |
0017 | Off | Off | Off | On | Off | On | On | On |
0018 | Off | Off | Off | On | On | Off | Off | Off |
BIOS SELECTION | ||||
Type | W2/1 | W2/2 | W2/3 | W2/4 |
27128 | On | On | Off | Off |
27256 | Off | Off | On | On |
SERIAL PORT INTERRUPT SELECTION | ||||
IRQ | W4/1 | W4/2 | W4/3 | W4/4 |
Serial port 1 IRQ4 | On | On | Off | Off |
Serial port 2 IRQ3 | Off | Off | On | On |
PARALLEL PORT INTERRUPT SELECTION | ||||
IRQ | W4/5 | W4/6 | W4/7 | W4/8 |
Parallel port 1 IRQ7 | On | On | Off | Off |
Parallel port 2 IRQ5 | Off | Off | On | On |
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