UNIDENTIFIED
NEAT-286 (VER. 2)
Processor |
80286 |
Processor Speed |
16/20MHz |
Chip Set |
Neat |
Video Chip Set |
None |
Maximum Onboard Memory |
8MB |
Maximum Video Memory |
None |
Cache |
None |
BIOS |
Unidentified |
Dimensions |
330mm x 218mm |
I/O Options |
External memory card |
NPU Options |
80287 |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Power LED & keylock |
J1 |
Turbo switch |
JP7 |
Speaker |
J2 |
Turbo LED |
LF1 |
External battery |
J3 |
External memory card |
SL1 |
Reset switch |
JP1 |
USER CONFIGURABLE SETTINGS | |||
Function |
Label |
Position | |
NPU asynchronous with CPU |
JP2 |
Pins 1 & 2 closed | |
NPU synchronous with CPU |
JP2 |
Pins 2 & 3 closed | |
BIOS type select 27128 |
JP4 |
Pins 1 & 2 closed | |
BIOS type select 27256 |
JP4 |
Pins 2 & 3 closed | |
CPU = CPU speed |
JP5 |
Pins 1 & 2 closed | |
CPU = NPU OSC speed |
JP5 |
Pins 2 & 3 closed | |
Monitor type select color |
JP6 |
Closed | |
Monitor type select monochrome |
JP6 |
Open |
DRAM CONFIGURATION | ||||
Size |
Bank A |
Bank B |
Bank C |
Bank D |
512KB |
(18) 41256 |
None |
None |
None |
640KB |
(18) 41256 |
(18) 4164 |
None |
None |
1MB |
(18) 41256 |
(18) 41256 |
None |
None |
1.5MB |
(18) 41256 |
(18) 41256 |
(2) 256K x 9 |
None |
1.64MB |
(18) 41256 |
(18) 4164 |
(2) 256K x 9 |
(2) 256K x 9 |
2MB |
(18) 411000 |
None |
None |
None |
2MB |
(18) 41256 |
(18) 41256 |
(2) 256K x 9 |
(2) 256K x 9 |
3MB |
(18) 41256 |
(18) 41256 |
(2) 1M x 9 |
None |
4MB |
(18) 411000 |
(18) 411000 |
None |
None |
4.64MB |
(18) 41256 |
(18) 4164 |
(2) 1M x 9 |
(2) 1M x 9 |
5MB |
(18) 41256 |
(18) 41256 |
(2) 1M x 9 |
(2) 1M x 9 |
6MB |
(18) 411000 |
(18) 411000 |
(2) 1M x 9 |
None |
8MB |
(18) 411000 |
(18) 411000 |
(2) 1M x 9 |
(2) 1M x 9 |
DRAM JUMPER CONFIGURATION | |
Setting |
JP3 |
Banks C & D = Bank 0 Banks A & B = Bank 1 |
1 & 2, 3 & 4, 6 & 7, 11 & 12, 13 & 14, 16 & 17, 18 & 19, 23 & 24, 28 & 29 |
Banks A & B = Bank 0 Banks C & D = Bank 1 |
2 & 3, 4 & 5, 7 & 8, 9 & 10, 12 & 13, 14 & 15, 17 & 18, 19 & 20, 22 & 23, 24 & 25, 27 & 28, 29 & 30 |
Note: Pins designated should be in the closed position. |