TANDON CORPORATION
2MB MEMORY OPTION BOARD
Card Type | Memory card |
Chipset/Controller | N/A |
I/O Options | N/A |
Maximum DRAM | 2MB |

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 x 1 | NONE | NONE |
1536KB | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | NONE |
2048KB | (18) 256K x 1 | (18) 256K x 1 | (18) 256K x 1 | (18) 256K 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 |