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# TANDON CORPORATION
2MB MEMORY OPTION BOARD
Card Type Memory card
Chipset/Controller N/A
I/O Options N/A
Maximum DRAM 2MB
IMG IMG 1
+------------------------------------------------------------+
| DRAM SIZE SELECTION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+---------------+-----------+-----------+-----------|
| 512KB | (18) 256K x 1 | NONE | NONE | NONE |
|--------+---------------+-----------+-----------+-----------|
| 1024KB | (18) 256K x 1 | (18) 256K | NONE | NONE |
| | | x 1 | | |
|--------+---------------+-----------+-----------+-----------|
| 1536KB | (18) 256K x 1 | (18) 256K | (18) 256K | NONE |
| | | x 1 | x 1 | |
|--------+---------------+-----------+-----------+-----------|
| 2048KB | (18) 256K x 1 | (18) 256K | (18) 256K | (18) 256K |
| | | x 1 | x 1 | x 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM ADDRESS SELECTION |
|------------------------------------------------------------|
| System RAM | Address |SW1/1 |SW1/2 |SW1/3|SW1/4|SW1/5|
|-------------+--------------+------+------+-----+-----+-----|
| 512-640KB |100000-2FFFFFh| Off | Off | Off | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 1024KB |180000-37FFFFh| Off | Off | Off | On | On |
|-------------+--------------+------+------+-----+-----+-----|
| 2560-2688KB |300000-4FFFFFh| Off | Off | On | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 3072KB |380000-57FFFFh| Off | Off | On | On | On |
|-------------+--------------+------+------+-----+-----+-----|
| 4608-4736KB |500000-6FFFFFh| Off | On | Off | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 5120KB |580000-77FFFFh| Off | On | Off | On | On |
|-------------+--------------+------+------+-----+-----+-----|
| 6656-6784KB |700000-8FFFFFh| Off | On | On | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 7168KB |780000-97FFFFh| Off | On | On | On | On |
|-------------+--------------+------+------+-----+-----+-----|
| 8704-8832KB |900000-AFFFFFh| On | Off | Off | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 9216KB |980000-B7FFFFh| On | Off | Off | On | On |
|-------------+--------------+------+------+-----+-----+-----|
|10752-10880KB|B00000-CFFFFFh| On | Off | On | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 11264KB |B80000-D7FFFFh| On | On | On | On | On |
|-------------+--------------+------+------+-----+-----+-----|
|12800-12928KB|D00000-EFFFFFh| On | On | Off | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 13312KB |D80000-F7FFFFh| On | On | Off | On | On |
|-------------+--------------+------+------+-----+-----+-----|
|14848-14976KB|F00000-FDFFFFh| On | On | On | On | Off |
|-------------+--------------+------+------+-----+-----+-----|
| 15360KB |F80000-FDFFFFh| On | On | On | On | On |
+------------------------------------------------------------+