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# MAGITRONICS
A-B341/A-B341Q
Processor 80386DX
Processor Speed 33/40MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
SRAM Cache 32/64/128/256KB
BIOS AMI
Dimensions 330.2mm x 218.4mm
I/O Options 32-bit proprietary expansion slot
NPU Options 80387DX/3167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------+----------+------------------------+----------|
| External | J10 | 32-bit proprietary | S1 |
| battery | | expansion slot | |
|-------------+----------+------------------------+----------|
| Power LED & | J23 | Reset switch | SW1 |
| keylock | | | |
|-------------+----------+------------------------+----------|
| Speaker | J24 | Turbo switch | SW2 |
|-------------+----------+------------------------+----------|
| Turbo LED | JP4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | JP1 | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP1 | open |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 2 & 3 |
| | (Internal battery) | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory normal operation | JP2 | open |
| | (external battery) | | |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus speed select iOSC/8 | JP3 | closed |
| | (CPU=40MHz) | | |
|---+----------------------------------+--------+------------|
| | Bus speed select iOSC/6 | JP3 | open |
| | (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) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 32KB | (4) 8K x 8 | NONE |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 | JP6 | JP7 | JP8 | JP9 | JP10 |
|-------+--------+--------+-------+---------+-------+--------|
| 32KB | 1 & 2 | 1 & 2 | 1 & 2 | open | 2 & 3 | 2 & 3 |
|-------+--------+--------+-------+---------+-------+--------|
| 64KB | 2 & 3 | 1 & 2 | 1 & 2 | open | 2 & 3 | 1 & 2 |
|-------+--------+--------+-------+---------+-------+--------|
| 128KB | 2 & 3 | 1 & 2 | 2 & 3 | closed | 2 & 3 | 1 & 2 |
|-------+--------+--------+-------+---------+-------+--------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | closed | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Notes:Pins designated should be in the closed position. |
| |
| Jumper J3 is present only on earlier versions of the main |
| board |
+------------------------------------------------------------+