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# JC INFORMATION SYSTEMS CORPORATION
MODEL 2030
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set C & T
Max. Onboard DRAM 64MB
Cache 64/256KB
BIOS C & T
Dimensions 330mm x 218mm
I/O Options 32-bit VESA card slot
Multi-mode type local bus card slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| External | J1 | Speaker | J5 |
| battery | | | |
|---------------+----------+----------------------+----------|
| Turbo LED | J2 | Reset switch | S9 |
|---------------+----------+----------------------+----------|
| Turbo switch | J3 | Multi-mode/local bus | L1 |
| | | card | |
|---------------+----------+----------------------+----------|
| Power LED & | J4 | 32-bit VESA card | V1 |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | BIOS type select Flash ROM | W5 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | BIOS type select EPROM | W5 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select monochrome | W9 | open |
|---+--------------------------------+--------+--------------|
| | Monitor type select color | W9 | closed |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | W11 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | W11 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W12 | W13 | W14 |
|-----------+-------------------+--------+-------------------|
| 80486DX2 | pins 2 & 3 closed | closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486DX | pins 2 & 3 closed | closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80487SX | pins 1 & 2 closed | closed | pins 1 & 2 closed |
|-----------+-------------------+--------+-------------------|
| 80486SX | N/A | N/A | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CONFIGURATION |
|------------------------------------------------------------|
| Speed |OSCI | S0 | S1 | S2 | W7 | W8 |
|---------------+-----+------+------+------+--------+--------|
| 20MHz |40MHz|closed| open |closed|pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|---------------+-----+------+------+------+--------+--------|
| 25MHz |50MHz| open | open |closed|pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|---------------+-----+------+------+------+--------+--------|
| 33MHz |66MHz|closed|closed| open |pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|---------------+-----+------+------+------+--------+--------|
| 40MHz |80MHz| open |closed| open |pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|---------------+-----+------+------+------+--------+--------|
|50(internal)MHz|50MHz| open | open |closed|pins 2 &|pins 2 &|
| | | | | | 3 | 3 |
|---------------+-----+------+------+------+--------+--------|
| 50MHz |50MHz| open | open |closed|pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|---------------+-----+------+------+------+--------+--------|
|66(internal)MHz|66MHz|closed|closed| open |pins 1 &|pins 1 &|
| | | | | | 2 | 2 |
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W10 | W15 | W16 |
|-------+-----------------+-----------------+----------------|
| 64KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note:The location of Jumper W15 and W16 may vary. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache CACHE | Location | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (8) 8K x 8 | CACHE | (2) 16K x 1 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 32K x 8 | CACHE | (2) 16K x 1 |
+------------------------------------------------------------+