SYSTEM 302 Motherboard Settings and Configuration
INTEL CORPORATION
SYSTEM 302
Processor | 80386DX |
Processor Speed | 25MHz |
Chip Set | Intel |
Max. Onboard DRAM | 8MB |
Cache | 64KB |
BIOS | Phoenix |
Dimensions | 355mm x 304mm |
I/O OPTIONS | 32-bit external memory card slot (2), parallel port, serial port (2) |
NPU Options | 80387 |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Parallel port | J10A | Speaker | J19 |
Serial port 9 pin (COM1 & COM2) | J10B | Power LED & Keylock | J20 |
Serial port 25 pin (COM2) | J10C | Memory expansion slot | S1 |
Reset switch (not used) | J18 | Memory expansion slot | S2 |
Note: J10B connects to two DB9 RS-232 connectors, J10C connects to one DB25 RS-232 connector. COM2 is active on both J10B and J10C, but only one may be used at a time for COM2. | |||
USER CONFIGURABLE SETTINGS | ||
Function | Jumpered Pins | |
| » | DRAM speed (100ns) | E1 - E2, E4 - E5 closed |
| » | SIMM size select 256K x 9 | E7 - E8, E10 - E11 closed |
SIMM size select 1M x 9 | E8 - E9, E11 - E12 closed | |
| » | Parallel printer port select LPT1 | E13 - E14, E20 - E21 closed |
Parallel printer port select LPT2 | E14 - E15, E19 - E20 closed | |
| » | Printer acknowledge trailing edge | E17 - E18 closed |
Printer acknowledge leading edge | E16 - E17 closed | |
| » | Serial port, (COM1) enabled | E22 - E23 closed |
Serial port, (COM1) disabled | E23 - E24 closed | |
| » | Serial port, (COM2) enabled | E25 - E26 closed |
Serial port, (COM2) disabled | E26 - E27 closed | |
| » | NPU disabled | E29 - E30 closed |
NPU enabled | E28 - E29 closed | |
| » | Keyboard reset disabled | E35 - E36 closed |
Keyboard reset enabled | E34 - E35 closed | |
| » | UNIX mode disabled | E38 - E39 closed |
UNIX mode enabled | E37 - E38 closed | |
| » | Monitor type select color | E41 - E42 closed |
Monitor type select monochrome | E40 - E41 closed | |
| » | Factory configured - do not alter | E49 - E50 closed |
SIMM type standard RAS/CAS | E53 - E54, E55 - E56 open | |
SIMM type static-column | E53 - E54, E55 - E56 closed | |
SIMM type fast page mode | E53 - E54, E55 - E56 closed | |
| » | BIOS type 27256 | E57 - E58 closed |
BIOS type 27512 | E58 - E59 closed | |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
1MB | (4) 256K x 9 | NONE |
2MB | (4) 256K x 9 | (4) 256K x 9 |
4MB | (4) 1M x 9 | NONE |
8MB | (4) 1M x 9 | (4) 1M x 9 |
DRAM JUMPER CONFIGURATION | |
Size | Jumpers |
1MB | E60 - E62, E61 - E63 open |
2MB | E60 - E62, E61 - E63 closed |
4MB | E60 - E62, E61 - E63 open |
8MB | E60 - E62, E61 - E63 closed |
My Books
