UNIDENTIFIED
YL-A09
|
Processor |
80286 |
|
Processor Speed |
16MHz |
|
Chip Set |
C & T Neat |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 259mm |
|
I/O Options |
None |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J3 |
Turbo LED |
JP13 |
|
Speaker |
JP11 |
Turbo Switch |
JP14 |
|
Reset switch |
JP12 |
Power LED & keylock |
JP16 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP2 |
closed | |
|
NPU mode select synchronous with CPU |
JP3 |
pins 1 & 2 closed | |
|
NPU mode select synchronous with oscillator installed at Y1 |
JP3 |
pins 2 & 3 closed | |
|
CPU speed select fast |
JP14 |
closed | |
|
CPU speed select slow |
JP14 |
open | |
|
BIOS type select 27256 |
JP15 |
pins 2 & 3 closed | |
|
BIOS type select 27128 |
JP15 |
pins 1 & 2 closed | |
|
Parity check enabled |
JP17 |
pins 1 & 2 closed | |
|
Parity check disabled |
JP17 |
pins 2 & 3 closed | |
|
Quiet bus enabled |
JP20 |
pins 1 & 2 closed | |
|
Quiet bus disabled (Use for high speed I/O cards) |
JP20 |
pins 2 & 3 closed | |
|
Same type of memory is used in all four banks |
JP23 |
pins 1 & 2 closed | |
|
First two banks are different than last two banks of memory |
JP23 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(18) 41256 |
NONE |
NONE |
NONE |
|
1MB |
(18) 41256 |
(18) 41256 |
NONE |
NONE |
|
1.5MB |
(18) 41256 |
(18) 41256 |
(2) 256K x 9 |
NONE |
|
2MB |
(18) 41256 |
(18) 41256 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(18) 411000 |
NONE |
NONE |
NONE |
|
4MB |
(18) 411000 |
(18) 411000 |
NONE |
NONE |
|
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 | ||||||
|
Size |
JP7 |
JP8 |
JP9 |
JP10 |
JP17 |
JP23 |
|
512KB |
Open |
2 & 3 |
Open |
Open |
1 & 2 |
1 & 2 |
|
1MB |
Open |
2 & 3 |
Open |
2-3 |
1 & 2 |
1 & 2 |
|
1.5MB |
1 & 2 |
2 & 3 |
Open |
2-3 |
1 & 2 |
1 & 2 |
|
2MB |
1 & 2 |
2 & 3 |
1 & 2 |
2-3 |
1 & 2 |
1 & 2 |
|
2MB |
Open |
2 & 3 |
Open |
Open |
1 & 2 |
1 & 2 |
|
4MB |
Open |
2 & 3 |
Open |
2-3 |
1 & 2 |
1 & 2 |
|
6MB |
1 & 2 |
2 & 3 |
Open |
2-3 |
1 & 2 |
1 & 2 |
|
8MB |
1 & 2 |
2 & 3 |
1 & 2 |
2-3 |
1 & 2 |
1 & 2 |
|
Note:Pins designated should be in the closed position. | ||||||
|
DRAM SWITCH CONFIGURATION | |||
|
Size |
SW1/3 |
SW1/4 |
SW1/5 |
|
512KB |
Off |
Off |
Off |
|
1MB |
On |
Off |
Off |
|
1.5MB |
Off |
On |
Off |
|
2MB |
On |
On |
Off |
|
2MB |
Off |
Off |
On |
|
4MB |
On |
Off |
On |
|
6MB |
Off |
On |
On |
|
8MB |
On |
On |
On |
|
I/O CONFIGURATION | |||
|
Setting |
JP1A |
JP1B |
JP1C |
|
I/O at full speed during memory refresh cycle |
Open |
Closed |
Open |
|
I/O at full speed during memory refresh cycle and DMA |
Closed |
Open |
Open |
|
I/O at full speed |
Closed |
Closed |
Closed |