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# MAGITRONICS
A-B345G/A-B345H
Processor 80386DX
Processor Speed 40MHz
Chip Set OPTi
Max. Onboard DRAM 32MB
SRAM Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | J1 | Turbo LED | JP12 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J18 | Turbo switch | JP11 |
|---------------------+----------+----------------+----------|
| Speaker | J19 | Reset switch | SW1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | ISA bus clock iOSC/4 (10MHz) | JP2 | closed |
|---+--------------------------------+--------+--------------|
| | ISA bus clock iOSC/5 (8MHz) | JP2 | open |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | J3 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | J3 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | J4 | closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | J4 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP6 | JP8 | JP9 | JP10 | JP17 | JP18 |
|-------+--------+--------+--------+-------+--------+--------|
| 64KB | open | open | open | pins | open | open |
| | | | | 2 & 3 | | |
|-------+--------+--------+--------+-------+--------+--------|
| 128KB | closed | closed | open | pins | open | closed |
| | | | | 1 & 2 | | |
|-------+--------+--------+--------+-------+--------+--------|
| 256KB | closed | closed | closed | pins | closed | closed |
| | | | | 2 & 3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+