(TXT) View Source
# UNIDENTIFIED
JS-168A
Processor 80286 (exact location unidentified)
Processor Speed 12MHz
Chip Set Unidentified
Max. Onboard DRAM 4MB
Cache None
BIOS AMI/Award/ERSO/Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287 (exact location unidentified)
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J20 | Turbo LED | JP8 |
|---------------------+----------+----------------+----------|
| Reset switch | JP6 | Speaker | JP10 |
|---------------------+----------+----------------+----------|
| Turbo switch | JP7 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| | Wait state select 0 wait | JP5 | Closed |
| | states | | |
|---+---------------------------+---------------+------------|
| | Wait state select 1 wait | JP5 | Open |
| | state | | |
|---+---------------------------+---------------+------------|
| | Turbo select keyboard | JP9 | pins 1 & 2 |
| | control | | closed |
|---+---------------------------+---------------+------------|
| | Turbo select controlled | JP9 | pins 2 & 3 |
| | by SW1/1 | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select low | SW1/1 | On |
|---+---------------------------+---------------+------------|
| | CPU speed select high | SW1/1 | Off |
|---+---------------------------+---------------+------------|
| | Monitor type select color | SW1/2 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | SW1/2 | Off |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| | Parity enabled | SW1/3 | On |
|---+---------------------------+---------------+------------|
| | Parity disabled | SW1/3 | Off |
|---+---------------------------+---------------+------------|
| | EMS port address select | SW1/4 | On |
| | 0E8H | | |
|---+---------------------------+---------------+------------|
| | EMS port address select | SW1/4 | Off |
| | 098H | | |
|---+---------------------------+---------------+------------|
| | BIOS type select 27128 | SW1/5 | On |
|---+---------------------------+---------------+------------|
| | BIOS type select 27256 | SW1/5 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank A | Bank B | Bank B/0 |
|----------+-------------+--------+--------------------------|
| 512KB | (18) 41256 | NONE | NONE |
| (A) | | | |
|----------+-------------+--------+--------------------------|
| 512KB | NONE | NONE | (4) 44256 & (2) 41256 |
| (B) | | | |
|----------+-------------+--------+--------------------------|
| 512KB | NONE | NONE | NONE |
| (C) | | | |
|----------+-------------+--------+--------------------------|
| 640KB(A) | (18) 4164 | NONE | (4) 44256 & (2) 41256 |
|----------+-------------+--------+--------------------------|
| 640KB(B) | (18) 4164 | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 640KB | NONE | NONE | (4) 44256 & (2) 41256 & |
| (C) | | | (4) 4464 & (2) 4164 |
|----------+-------------+--------+--------------------------|
| 1MB (A) | NONE | NONE | (8) 44256 & (4) 41256 |
|----------+-------------+--------+--------------------------|
| 1MB (B) | NONE | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 1MB (C) | (18) 41256 | NONE | (4) 44256 & (2) 41256 |
|----------+-------------+--------+--------------------------|
| 1MB (D) | (18) 41256 | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 1MB (E) | (18) 41256 | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 1MB (F) | (18) 41256 | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 2MB (A) | (18) IBM | NONE | NONE |
| | DRAM | | |
|----------+-------------+--------+--------------------------|
| 2MB (B) | NONE | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 4MB (A) | NONE | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 4MB (B) | (18) 41256 | NONE | NONE |
|----------+-------------+--------+--------------------------|
| 4MB (C) | (18) 41256 | NONE | NONE |
|------------------------------------------------------------|
| Note: The orientation of the DRAM banks is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank B/1 | Bank C | Bank | Bank |
| | | | C/SIM 0 | C/SIM 1 |
|------------+----------------+--------+----------+----------|
| 512KB (A) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 512KB (B) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 512KB (C) | NONE | NONE | (2) 256K | NONE |
| | | | x 9 | |
|------------+----------------+--------+----------+----------|
| 640KB(A) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 640KB(B) | NONE | NONE | (2) 256K | NONE |
| | | | x 9 | |
|------------+----------------+--------+----------+----------|
| 640KB (C) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 1MB (A) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 1MB (B) | NONE | NONE | (2) 256K | (2) 256K |
| | | | x 9 | x 9 |
|------------+----------------+--------+----------+----------|
| 1MB (C) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 1MB (D) | (4) 44256 & | NONE | NONE | NONE |
| | (2) 41256 | | | |
|------------+----------------+--------+----------+----------|
| 1MB (E) | NONE | NONE | (2) 256K | NONE |
| | | | x 9 | |
|------------+----------------+--------+----------+----------|
| 1MB (F) | NONE | NONE | NONE | (2) 256K |
| | | | | x 9 |
|------------+----------------+--------+----------+----------|
| 2MB (A) | NONE | NONE | NONE | NONE |
|------------+----------------+--------+----------+----------|
| 2MB (B) | NONE | NONE | (2) 1M x | NONE |
| | | | 9 | |
|------------+----------------+--------+----------+----------|
| 4MB (A) | NONE | NONE | (2) 1M x | (2) 1M x |
| | | | 9 | 9 |
|------------+----------------+--------+----------+----------|
| 4MB (B) | NONE | NONE | (2) 1M x | NONE |
| | | | 9 | |
|------------+----------------+--------+----------+----------|
| 4MB (C) | NONE | NONE | NONE | (2) 1M x |
| | | | | 9 |
|------------------------------------------------------------|
| Note: The orientation of the DRAM banks is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP21 | JP22 | JP23 |
|-----------+----------------+---------------+---------------|
| 512KB (A) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 512KB (B) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 512KB (C) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 640KB (A) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 640KB (B) | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 640KB (C) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 1MB (A) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 1MB (B) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 1MB (C) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 1MB (D) | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 1MB (E) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 1MB (F) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 2MB (A) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 2MB (B) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 4MB (A) | N/A | N/A | N/A |
|-----------+----------------+---------------+---------------|
| 4MB (B) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 4MB (C) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/6 | SW1/7 | SW1/8 |
|----------------------+------------+------------+-----------|
| 512KB | On | On | On |
|----------------------+------------+------------+-----------|
| 640KB | On | On | Off |
|----------------------+------------+------------+-----------|
| 640KB + 384KB | On | Off | On |
|----------------------+------------+------------+-----------|
| 640KB + 384KB (EMS) | On | Off | Off |
|----------------------+------------+------------+-----------|
| 640KB + 1408KB | Off | On | On |
|----------------------+------------+------------+-----------|
| 640KB + 1408KB (EMS) | Off | On | Off |
|----------------------+------------+------------+-----------|
| 640KB + 3456KB | Off | Off | On |
|----------------------+------------+------------+-----------|
| 640KB + 3456KB (EMS) | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| KEYBOARD BIOS PIN CONFIGURATION |
|------------------------------------------------------------|
| Pin | JP1 | JP2 | JP3 | JP4 |
|---------+------------+------------+------------+-----------|
| 23 | Open | Open | Closed | Open |
|---------+------------+------------+------------+-----------|
| 27 | Open | Closed | Open | Open |
|---------+------------+------------+------------+-----------|
| 30 | Open | Open | Open | Closed |
|---------+------------+------------+------------+-----------|
| 32 | Closed | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| Note: The location of pin 1 is unidentified. |
+------------------------------------------------------------+