UNIDENTIFIED
NESX
Processor | 80386SX |
Processor Speed | 12/16MHz |
Chip Set | Neat |
Video Chip Set | None |
Maximum Onboard Memory | 8MB |
Maximum Video Memory | None |
Cache | None |
BIOS | AMI |
Dimensions | 330mm x 218mm |
I/O Options | None |
NPU Options | 80387SX |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Auxiliary keyboard connector | J1 | Reset switch | J9 |
External battery | J5 | Speaker | J12 |
Turbo switch | J7 | Power LED & keylock | J13 |
Turbo LED | J8 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
Monitor type select color | J2 | Pins 1 & 2 closed | |
Monitor type select monochrome | J2 | Pins 2 & 3 closed | |
» | CMOS memory normal operation | J6 | Open |
CMOS memory clear | J6 | Closed | |
BIOS type select 27128 | J14 | Pins 1 & 2 closed | |
BIOS type select 27256 | J14 | Pins 2 & 3 closed |
DRAM CONFIGURATION 1 | ||||||
Size | Bank 0 | Bank 1 | Bank 0A | Bank 1A | Bank 2 | Bank 3 |
512KB | (18) 41256 | None | None | None | None | None |
1MB | (18) 41256 | (18) 41256 | None | None | None | None |
1.5MB | (18) 41256 | (18) 41256 | None | None | (4) 44256 | None |
2MB | (18) 41256 | (18) 41256 | None | None | (4) 44256 | (4) 44256 |
2MB | (18) 411000 | None | None | None | None | None |
3MB | (18) 41256 | (18) 41256 | None | (2) 1M x 9 | None | None |
4MB | (18) 411000 | (18) 411000 | None | None | None | None |
5MB | (18) 41256 | (18) 41256 | (2) 1M x 9 | (2) 1M x 9 | None | None |
6MB | (18) 411000 | (18) 411000 | None | (2) 1M x 9 | None | None |
8MB | (18) 411000 | (18) 411000 | (2) 1M x 9 | (2) 1M x 9 | None | None |
Note: In addition to the above configurations, banks 2 & 3 also will accept 41256 chips and banks 0A & 1A will accept 256K x 9. If banks 2 & 3 are used, P2 & P3 must be installed with 41256 chips (see DRAM PARITY CONFIGURATION table). |
DRAM PARITY CONFIGURATION 1 | ||
Size | P 2 | P 3 |
512KB | None | None |
1MB | None | None |
1.5MB | (4) 41256 | None |
2MB | (4) 41256 | (4) 41256 |
2MB | None | None |
3MB | None | None |
4MB | None | None |
5MB | None | None |
6MB | None | None |
8MB | None | None |
DRAM CONFIGURATION 2 | ||||||
Size | Bank 0 | Bank 1 | Bank 0A | Bank 1A | Bank 2 | Bank 3 |
512KB | None | None | None | None | None | (4) 44256 |
1MB | None | None | None | None | (4) 44256 | (4) 44256 |
1.5MB | None | (18) 41256 | None | None | (4) 44256 | (4) 44256 |
2MB | (18) 41256 | (18) 41256 | None | None | (4) 44256 | (4) 44256 |
2MB | None | None | (2) 1M x 9 | None | None | None |
3MB | None | (18) 411000 | None | None | (4) 44256 | (4) 44256 |
4MB | None | None | (2) 1M x 9 | (2) 1M x 9 | None | None |
5MB | (18) 411000 | (18) 411000 | None | None | (4) 44256 | (4) 44256 |
6MB | None | (18) 411000 | (2) 1M x 9 | (2) 1M x 9 | None | None |
8MB | (18) 411000 | (18) 411000 | (2) 1M x 9 | (2) 1M x 9 | None | None |
DRAM PARITY CONFIGURATION 2 | ||
Size | P 2 | P 3 |
512KB | None | (4) 41256 |
1MB | (4) 41256 | (4) 41256 |
1.5MB | (4) 41256 | (4) 41256 |
2MB | (4) 41256 | (4) 41256 |
2MB | None | None |
3MB | (4) 41256 | (4) 41256 |
4MB | None | None |
5MB | (4) 41256 | (4) 41256 |
6MB | None | None |
8MB | None | None |
DRAM JUMPER CONFIGURATION | |
Configuration | J11 |
1 | Closed |
2 | Open |