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