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 |