UNIDENTIFIED
80386 SX
Processor | 80386SX |
Processor Speed | 16/20MHz |
Chip Set | Unidentified |
Video Chip Set | None |
Maximum Onboard Memory | 4MB |
Maximum Video Memory | None |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 217mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Turbo LED | JP1 | Turbo switch | JP4 |
Speaker | JP2 | Power LED & keylock | JP5 |
Reset switch | JP3 | External battery | JP15 |
Note: JP4 may be a 2-pin jumper. |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
ROM wait state select 2 wait states (16MHz CPU) | J1 | Pins 2 & 3 closed | |
ROM wait state select 3 wait states (20MHz CPU) | J1 | Pins 1 & 2 closed | |
Turbo enabled | JP4 | Pins 2 & 3 closed | |
Turbo disabled | JP4 | Pins 1 & 2 closed | |
NPU not installed | JP6 | Pins 2 & 3 closed | |
NPU installed | JP6 | Pins 1 & 2 closed | |
Parity disabled | JP7 | Open | |
Parity enabled | JP7 | Closed | |
RAM wait state select 0 wait states (only if JP9 is open) | JP8 | Pins 1 & 2 closed | |
RAM wait state select 1 wait state (only if JP9 is open) | JP8 | Pins 2 & 3 closed | |
JP8 enabled | JP9 | Open | |
8042 keyboard controller pin 29 | JP9 | Closed | |
» | Factory configured - do not alter (for AMI BIOS & 8042) | JP10 | Open |
Monitor type select color | JP11 | Pins 2 & 3 closed | |
Monitor type select monochrome | JP11 | Pins 1 & 2 closed | |
Power good signal detect from power supply | JP13 | Pins 2 & 3 closed | |
Power good signal detect from board | JP13 | Pins 1 & 2 closed | |
12v battery charge disabled | JP14 | Pins 1 & 2 closed | |
12v battery charge enabled | JP14 | Pins 2 & 3 closed |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
512KB | (18) 41256 | None |
640KB | (18) 41256 | (18) 4164 |
1MB | (18) 41256 | (18) 41256 |
2MB | (18) 411000 | None |
4MB | (18) 411000 | (18) 411000 |
DRAM JUMPER CONFIGURATION | |
Size | J3 |
512KB | Pins 1 & 2, 3 & 4 closed |
640KB | Pins 2 & 4, 3 & 5 closed |
1MB | Pins 3 & 5, 4 & 6 closed |
2MB | Pins 1 & 3, 4 & 6 closed |
4MB | Pins 1 & 3, 4 & 6 closed |
CPU SPEED SELECTION | |
Speed | J2 |
16MHz | Pins 3 & 4, 7 & 8 closed |
20MHz | Pins 3 & 4, 5 & 6 closed |