TEXT View Source
# UPDATE TECHNOLOGY, INC.
VL-BUS MAINBOARD
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/50(internal)/50/66(internal)MHz
Chip Set UNI
Max. Onboard DRAM 32MB
SRAM Cache 32/64/128/256KB
BIOS AMI
Dimensions 254mm x 218mm
I/O Options 32-bit VESA local-bus card slots (3)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+----------+-----------------------+----------|
| Turbo switch | J4 | External battery | J8 |
|--------------+----------+-----------------------+----------|
| Turbo LED | J5 | Reset switch | J10 |
|--------------+----------+-----------------------+----------|
| Speaker | J6 | 32-bit VESA local-bus | S1 - S3 |
| | | cards (3) | |
|--------------+----------+-----------------------+----------|
| Power LED & | J7 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | J11 | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | J11 | open |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | (internal battery) | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory normal operation | JP2 | open |
| | (external battery) | | |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | VESA local bus speed select (CPU | JP19 | closed |
| | £ 33MHz) | | |
|---+----------------------------------+--------+------------|
| | VESA local bus speed select (CPU | JP19 | open |
| | > 33MHz) | | |
|---+----------------------------------+--------+------------|
| » | VESA local bus wait states | JP20 | closed |
| | select 0 (CPU >33MHz) | | |
|---+----------------------------------+--------+------------|
| | VESA local bus wait state select | JP20 | open |
| | 1 (CPU £ 33MHz) | | |
|---+----------------------------------+--------+------------|
| » | VESA local bus speed select | JP43 | pins 1 & 2 |
| | CPU/1 | | closed |
|---+----------------------------------+--------+------------|
| | VESA local bus speed select | JP43 | pins 2 & 3 |
| | CPU/2 | | closed |
|---+----------------------------------+--------+------------|
| » | CPU speed select £ 33MHz | JP44 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU speed select > 33MHz | JP44 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU | J4 |
|----------------------+-------------------------------------|
| 80486DX2 | pins 1 & 2, 4 & 5, and 6 & 7 closed |
|----------------------+-------------------------------------|
| ODP487SX | pins 2 & 3, 4 & 5, and 6 & 7 closed |
|----------------------+-------------------------------------|
| 80486DX | pins 1 & 2, 4 & 5, and 6 & 7 closed |
|----------------------+-------------------------------------|
| 80487SX | pins 5 & 6 closed |
|----------------------+-------------------------------------|
| 80486SX | pins 2 & 3, 4 & 5, and 6 & 7 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-----------+------------------------+-----------------------|
| 1MB | (4) 256K x 9 | NONE |
|-----------+------------------------+-----------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|-----------+------------------------+-----------------------|
| 4MB | (4) 1M x 9 | NONE |
|-----------+------------------------+-----------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|-----------+------------------------+-----------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|-----------+------------------------+-----------------------|
| 16MB | (4) 4M x 9 | NONE |
|-----------+------------------------+-----------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|-----------+------------------------+-----------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K x 8 | Bank 0 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J17 | J18 | J19 | J20 |
|-------+--------+--------+--------+-------------------------|
| 32KB | open | open | open | pins 2 & 3 closed |
|-------+--------+--------+--------+-------------------------|
| 64KB | open | closed | open | pins 1 & 2 closed |
|-------+--------+--------+--------+-------------------------|
| 128KB | open | closed | closed | pins 1 & 2 and 3 & 4 |
| | | | | closed |
|-------+--------+--------+--------+-------------------------|
| 256KB | closed | closed | closed | pins 1 & 2 and 4 & 5 |
| | | | | closed |
+------------------------------------------------------------+