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# APPARAT, INC.
256K MEMORY BOARD (REV. A)
Card Type Memory
Maximum Onboard Memory 256KB DRAM
I/O Options N/A
Data Bus 8-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| Parity enabled | SW1/1 | Off |
|----------------------------------------+-------+-----------|
| Parity disabled | SW1/1 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 64KB | (9) 64K x 1 | None | None | None |
|-------+-------------+------------+------------+------------|
| 128KB | (9) 64K x 1 | (9) 64K x | None | None |
| | | 1 | | |
|-------+-------------+------------+------------+------------|
| 192KB | (9) 64K x 1 | (9) 64K x | (9) 64K x | None |
| | | 1 | 1 | |
|-------+-------------+------------+------------+------------|
| 256KB | (9) 64K x 1 | (9) 64K x | (9) 64K x | (9) 64K x |
| | | 1 | 1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/2 | SW1/7 | SW1/8 |
|---------------+--------------+--------------+--------------|
| 64KB | Off | Off | Off |
|---------------+--------------+--------------+--------------|
| 128KB | Off | On | On |
|---------------+--------------+--------------+--------------|
| 192KB | Off | On | On |
|---------------+--------------+--------------+--------------|
| 256KB | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STARTING MEMORY ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
|------------+-----------+-----------+-----------+-----------|
| 0KB | Off | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 64KB | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 128KB | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 192KB | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 256KB | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 320KB | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 384KB | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 448KB | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 512KB | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 576KB | Off | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 640KB | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 704KB | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 768KB | On | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 832KB | On | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 896KB | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 960KB | On | On | On | On |
+------------------------------------------------------------+