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# AUVA COMPUTER INC.
CAM 25-P9, CAM 33-P9, CAM 33-F
J-MARK COMPUTER CORPORATION
OPTI-495SX 3/486WB
SEE-THRU DATA SYSTEMS, LTD.
STO 98-5VL
Processor 80386DX/CX486DLC/80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor 25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set OPTI
Max. 32MB
Onboard
DRAM
SRAM Cache 64/128/256KB
BIOS MR
Dimensions 235mm x 220mm
I/O VESA local bus slots (3)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J1 | Turbo LED | JP32 |
|-------------------+----------+------------------+----------|
| Power LED & | J19 | Reset switch | RST |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J20 | 32-bit VESA | S2 & S3 |
| | | Local bus slots | |
| | | (Slave) | |
|-------------------+----------+------------------+----------|
| Turbo switch | JP31 | 32-bit VESA | S2 & S3 |
| | | Local bus slots | |
| | | (Master) | |
|------------------------------------------------------------|
| Note:VESA Local bus slot S1 should only be used for a VGA |
| video card. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP2 | open |
| | alter | | |
|---+----------------------------------+--------+------------|
| | Bus clock speed select iOSC/4 | JP3 | closed |
|---+----------------------------------+--------+------------|
| | Bus clock speed select iOSC/5 | JP3 | open |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP4 | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP4 | open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP16 | open |
| | alter | | |
|---+----------------------------------+--------+------------|
| | 80486 PQFP enabled | JP17 | open |
|---+----------------------------------+--------+------------|
| | 80486 PQFP disabled | JP17 | closed |
|---+----------------------------------+--------+------------|
| | 80386 PQFP enabled | JP18 | open |
|---+----------------------------------+--------+------------|
| | 80386 PQFP disabled | JP18 | closed |
|---+----------------------------------+--------+------------|
| » | VESA bus speed select <=33MHz | JP22 | open |
|---+----------------------------------+--------+------------|
| | VESA bus speed select > 33MHz | JP22 | closed |
|---+----------------------------------+--------+------------|
| » | VESA bus wait states select 0 | JP26 | open |
| | (CPU <=33MHz) | | |
|---+----------------------------------+--------+------------|
| | VESA bus wait state select 1 | JP26 | closed |
| | (CPU > 33MHz) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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(U39) | TAG(U40) |
|-------+-------------+------------+------------+------------|
| 64KB | (8) 8K x 8 | Banks 0 & | (1) 8K x 8 | NONE |
| | | 1 | | |
|-------+-------------+------------+------------+------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | NONE |
|-------+-------------+------------+------------+------------|
| 256KB | (8) 32K x 8 | Banks 0 & | (1) 32K x | NONE |
| | | 1 | 8 | |
|-------+-------------+------------+------------+------------|
| 256KB | (8) 32K x 8 | Banks 0 & | (1) 8K x 8 | (1) 8K x 8 |
| | | 1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP13 | JP15 |
|---------+-------------------+----------+---------+---------|
| 64KB | pins 2 & 3 closed | open | open | open |
|---------+-------------------+----------+---------+---------|
| 128KB | pins 1 & 2 closed | closed | closed | open |
|---------+-------------------+----------+---------+---------|
| 256KB | pins 2 & 3 closed | closed | closed | closed |
+------------------------------------------------------------+
+----------------------------------------------------------------+
| CPU CONFIGURATION |
|----------------------------------------------------------------|
| CPU |JP5| JP6 | JP7 | JP12 | JP30 | JP34 |JP35| JP36 |JP37|
|--------+---+------+------+------+------+------+----+------+----|
|80386DX |2&3| open | open | open |closed| open |N/A | N/A |N/A |
|--------+---+------+------+------+------+------+----+------+----|
|CX486DLC|2&3|closed|closed| open |closed| open |N/A | N/A |N/A |
|--------+---+------+------+------+------+------+----+------+----|
|80486SX |1&2| open | open |closed| open |closed|open| open |2&3 |
|--------+---+------+------+------+------+------+----+------+----|
|80487SX |1&2| open | open |closed| open |closed|2&3 |closed|1&2 |
|--------+---+------+------+------+------+------+----+------+----|
|80486DX |1&2| open | open |closed| open |closed|1&2 |closed|1&2 |
|--------+---+------+------+------+------+------+----+------+----|
|ODP487SX|1&2| open | open |closed| open |closed|2&3 |closed|1&2 |
|--------+---+------+------+------+------+------+----+------+----|
|80486DX2|1&2| open | open |closed| open |closed|1&2 |closed|1&2 |
|----------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+----------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SPEED SELECT |
|------------------------------------------------------------|
| Speed | JP25 | JP28 | JP29 | JP33 |
|-------------------+-----------+--------+--------+----------|
| 25MHz | pins 1 & | closed | open | pins 1 & |
| | 2 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 33MHz(386/486DLC) | pins 2 & | closed | open | pins 1 & |
| | 3 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 33MHz(486) | pins 1 & | open | closed | pins 1 & |
| | 2 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 40MHz(486) | pins 1 & | open | open | pins 1 & |
| | 2 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 40MHz(386/486DLC) | pins 2 & | open | closed | pins 1 & |
| | 3 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 50iMHz | pins 2 & | closed | open | pins 2 & |
| | 3 closed | | | 3 closed |
|-------------------+-----------+--------+--------+----------|
| 50MHz | pins 1 & | closed | open | pins 1 & |
| | 2 closed | | | 2 closed |
|-------------------+-----------+--------+--------+----------|
| 66iMHz | pins 2 & | open | closed | pins 2 & |
| | 3 closed | | | 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA SLOT (S2 & S3) MASTER/SLAVE CONFIGURATION |
|------------------------------------------------------------|
| Jumper | Master/Slave | Slave only |
|---------------------+-----------------------+--------------|
| JP8 | open | closed |
|---------------------+-----------------------+--------------|
| JP9 | open | closed |
|---------------------+-----------------------+--------------|
| JP14 | open | closed |
|---------------------+-----------------------+--------------|
| JP19 | open | closed |
|---------------------+-----------------------+--------------|
| JP21 | open | closed |
|---------------------+-----------------------+--------------|
| JP23 | pins 1 & 2 closed | pins 2 & 3 |
| | | closed |
|---------------------+-----------------------+--------------|
| JP24 | open | closed |
|---------------------+-----------------------+--------------|
| JP27 | pins 1 & 2 closed | pins 2 & 3 |
| | | closed |
|---------------------+-----------------------+--------------|
| U29 (PAL socket) | Installed | N/A |
|---------------------+-----------------------+--------------|
| U38 (PAL socket) | Installed | N/A |
|------------------------------------------------------------|
| Note:When the Master/Slave setting is used slots S2 & S3 |
| can use Bus-master cards or slave cards. |
| |
| When the Slave only setting is used non-Bus-master cards |
| can be used. |
+------------------------------------------------------------+