DTK COMPUTER, INC.
AT-RAMBANK
|
Card Type |
Memory |
|
Chipset/Controller |
N/A |
|
I/O Options |
N/A |
|
Maximum DRAM |
2048KB |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(18) 41256 |
None |
None |
None |
|
1MB |
(18) 41256 |
(18) 41256 |
None |
None |
|
1.5MB |
(18) 41256 |
(18) 41256 |
(18) 41256 |
None |
|
2MB |
(18) 41256 |
(18) 41256 |
(18) 41256 |
(18) 41256 |
|
STARTING MEMORY ADDRESS SELECTION | |||||||||
|
Memory |
Address |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW1/8 |
|
512KB |
080000h |
Off |
Off |
On |
Off |
Off |
Off |
Off |
Off |
|
1MB |
100000h |
Off |
Off |
Off |
On |
Off |
Off |
Off |
On |
|
1.25MB |
120000h |
On |
Off |
Off |
On |
Off |
Off |
Off |
On |
|
1.25MB |
140000h |
Off |
On |
Off |
On |
Off |
Off |
Off |
On |
|
1.375MB |
160000h |
On |
On |
Off |
On |
Off |
Off |
Off |
On |
|
1.5MB |
180000h |
Off |
Off |
On |
On |
Off |
Off |
Off |
On |
|
1.625MB |
1A0000h |
On |
Off |
On |
On |
Off |
Off |
Off |
On |
|
1.75MB |
1C0000h |
Off |
On |
On |
On |
Off |
Off |
Off |
On |
|
1.875MB |
1E0000h |
On |
On |
On |
On |
Off |
Off |
Off |
On |
|
2MB |
200000h |
Off |
Off |
Off |
Off |
On |
Off |
Off |
On |
|
2.125MB |
220000h |
On |
Off |
Off |
Off |
On |
Off |
Off |
On |
|
2.25MB |
240000h |
Off |
On |
Off |
Off |
On |
Off |
Off |
On |
|
2.375MB |
260000h |
On |
On |
Off |
Off |
On |
Off |
Off |
On |
|
2.5MB |
280000h |
Off |
Off |
On |
Off |
On |
Off |
Off |
On |
|
2.625MB |
2A0000h |
On |
Off |
On |
Off |
On |
Off |
Off |
On |
|
2.75MB |
2C0000h |
Off |
On |
On |
Off |
On |
Off |
Off |
On |
|
2.875MB |
2E0000h |
On |
On |
On |
Off |
On |
Off |
Off |
On |
|
3MB |
300000h |
Off |
Off |
Off |
On |
On |
Off |
Off |
On |
|
3.125MB |
320000h |
On |
Off |
Off |
On |
On |
Off |
Off |
On |
|
3.25MB |
340000h |
Off |
On |
Off |
On |
On |
Off |
Off |
On |
|
3.375MB |
360000h |
On |
On |
Off |
On |
On |
Off |
Off |
On |
|
3.5MB |
380000h |
Off |
Off |
On |
On |
On |
Off |
Off |
On |
|
3.625MB |
3A0000h |
On |
Off |
On |
On |
On |
Off |
Off |
On |
|
3.75MB |
3C0000h |
Off |
On |
On |
On |
On |
Off |
Off |
On |
|
3.875MB |
3E0000h |
On |
On |
On |
On |
On |
Off |
Off |
On |
|
4MB |
400000h |
Off |
Off |
Off |
Off |
Off |
On |
Off |
On |
|
4.125MB |
420000h |
On |
Off |
Off |
Off |
Off |
On |
Off |
On |
|
4.25MB |
440000h |
Off |
On |
On |
On |
On |
On |
Off |
On |
|
4.375MB |
460000h |
On |
On |
Off |
Off |
Off |
On |
Off |
On |
|
4.5MB |
480000h |
Off |
Off |
On |
Off |
Off |
On |
Off |
On |
|
4.625MB |
4A0000h |
On |
Off |
On |
Off |
Off |
On |
Off |
On |
|
4.75MB |
4C0000h |
Off |
On |
On |
Off |
Off |
On |
Off |
On |
|
4.875MB |
4E0000h |
On |
On |
On |
Off |
Off |
On |
Off |
On |
|
5.0MB |
500000h |
Off |
Off |
Off |
On |
Off |
On |
Off |
On |
|
5.125MB |
520000h |
On |
Off |
Off |
On |
Off |
On |
Off |
On |
|
5.25MB |
540000h |
Off |
On |
Off |
On |
Off |
On |
Off |
On |
|
5.375MB |
560000h |
On |
On |
Off |
On |
Off |
On |
Off |
On |
|
5.5MB |
580000h |
Off |
Off |
On |
On |
Off |
On |
Off |
On |
|
5.625MB |
5A0000h |
On |
Off |
On |
On |
Off |
On |
Off |
On |
|
5.75MB |
5C0000h |
Off |
On |
On |
On |
Off |
On |
Off |
On |
|
5.875MB |
5E0000h |
On |
On |
On |
On |
Off |
On |
Off |
On |
|
STARTING MEMORY ADDRESS SELECTION | |||||||||
|
Memory |
Address |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW1/8 |
|
6MB |
600000h |
Off |
Off |
Off |
Off |
On |
On |
Off |
On |
|
6.125MB |
620000h |
On |
Off |
Off |
Off |
On |
On |
Off |
On |
|
6.25MB |
640000h |
Off |
On |
Off |
Off |
On |
On |
Off |
On |
|
6.375MB |
660000h |
On |
On |
Off |
Off |
On |
On |
Off |
On |
|
6.5MB |
680000h |
Off |
Off |
On |
Off |
On |
On |
Off |
On |
|
6.625MB |
6A0000h |
On |
Off |
On |
Off |
On |
On |
Off |
On |
|
6.75MB |
6C0000h |
Off |
On |
On |
Off |
On |
On |
Off |
On |
|
6.875MB |
6E0000h |
On |
On |
On |
Off |
On |
On |
Off |
On |
|
7MB |
700000h |
Off |
Off |
Off |
On |
On |
On |
Off |
On |
|
7.125MB |
720000h |
On |
Off |
Off |
On |
On |
On |
Off |
On |
|
7.25MB |
740000h |
Off |
On |
Off |
On |
On |
On |
Off |
On |
|
7.375MB |
760000h |
On |
On |
Off |
On |
On |
On |
Off |
On |
|
7.5MB |
780000h |
Off |
Off |
On |
On |
On |
On |
Off |
On |
|
7.625MB |
7A0000h |
On |
Off |
On |
On |
On |
On |
Off |
On |
|
7.75MB |
7C0000h |
Off |
On |
On |
On |
On |
On |
Off |
On |
|
7.87MB |
7E0000h |
On |
On |
On |
On |
On |
On |
Off |
On |
|
8MB |
800000h |
Off |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
8.125MB |
820000h |
On |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
8.25MB |
840000h |
Off |
On |
Off |
Off |
Off |
Off |
On |
On |
|
8.375MB |
860000h |
On |
On |
Off |
Off |
Off |
Off |
On |
On |
|
8.5MB |
880000h |
Off |
Off |
On |
Off |
Off |
Off |
On |
On |
|
8.625MB |
8A0000h |
On |
Off |
On |
Off |
Off |
Off |
On |
On |
|
8.75MB |
8C0000h |
Off |
On |
On |
Off |
Off |
Off |
On |
On |
|
8.87MB |
8E0000h |
On |
On |
On |
Off |
Off |
Off |
On |
On |
|
9MB |
900000h |
Off |
Off |
Off |
On |
Off |
Off |
On |
On |
|
9.125MB |
920000h |
On |
Off |
Off |
On |
Off |
Off |
On |
On |
|
9.25MB |
940000h |
Off |
On |
Off |
On |
Off |
Off |
On |
On |
|
9.375MB |
960000h |
On |
On |
Off |
On |
Off |
Off |
On |
On |
|
9.5MB |
980000h |
Off |
Off |
On |
On |
Off |
Off |
On |
On |
|
9.625MB |
9A0000h |
On |
Off |
On |
On |
Off |
Off |
On |
On |
|
9.75MB |
9C0000h |
Off |
On |
On |
On |
Off |
Off |
On |
On |
|
9.87MB |
9E0000h |
On |
On |
On |
On |
Off |
Off |
On |
On |
|
10MB |
A00000h |
Off |
Off |
Off |
Off |
On |
Off |
On |
On |
|
10.125MB |
A20000h |
On |
Off |
Off |
Off |
On |
Off |
On |
On |
|
10.25MB |
A40000h |
Off |
On |
Off |
Off |
On |
Off |
On |
On |
|
10.375MB |
A60000h |
On |
On |
Off |
Off |
On |
Off |
On |
On |
|
10.5MB |
A80000h |
Off |
Off |
On |
Off |
On |
Off |
On |
On |
|
10.625MB |
AA0000h |
On |
Off |
On |
Off |
On |
Off |
On |
On |
|
10.75MB |
AC0000h |
Off |
On |
On |
Off |
On |
Off |
On |
On |
|
10.87MB |
AE0000h |
On |
On |
On |
Off |
On |
Off |
On |
On |
|
STARTING MEMORY ADDRESS SELECTION | |||||||||
|
Memory |
Address |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW1/8 |
|
11MB |
B00000h |
Off |
Off |
Off |
On |
On |
Off |
On |
On |
|
11.125MB |
B20000h |
On |
Off |
Off |
On |
On |
Off |
On |
On |
|
11.25MB |
B40000h |
Off |
On |
Off |
On |
On |
Off |
On |
On |
|
11.375MB |
B60000h |
On |
On |
Off |
On |
On |
Off |
On |
On |
|
11.5MB |
B80000h |
Off |
Off |
On |
On |
On |
Off |
On |
On |
|
11.625MB |
BA0000h |
On |
Off |
On |
On |
On |
Off |
On |
On |
|
11.75MB |
BC0000h |
Off |
On |
On |
On |
On |
Off |
On |
On |
|
11.87MB |
BE0000h |
On |
On |
On |
On |
On |
Off |
On |
On |
|
12MB |
C00000h |
Off |
Off |
Off |
Off |
Off |
On |
On |
On |
|
12.125MB |
C20000h |
On |
Off |
Off |
Off |
Off |
On |
On |
On |
|
12.25MB |
C40000h |
Off |
On |
Off |
Off |
Off |
On |
On |
On |
|
12.375MB |
C60000h |
On |
On |
Off |
Off |
Off |
On |
On |
On |
|
12.5MB |
C80000h |
Off |
Off |
On |
Off |
Off |
On |
On |
On |
|
12.625MB |
CA0000h |
On |
Off |
On |
Off |
Off |
On |
On |
On |
|
12.75MB |
CC0000h |
Off |
On |
On |
Off |
Off |
On |
On |
On |
|
12.87MB |
CE0000h |
On |
On |
On |
Off |
Off |
On |
On |
On |
|
13MB |
C00000h |
Off |
Off |
Off |
On |
Off |
On |
On |
On |
|
13.125MB |
D20000h |
On |
Off |
Off |
On |
Off |
On |
On |
On |
|
13.25MB |
D40000h |
Off |
On |
Off |
On |
Off |
On |
On |
On |
|
13.375MB |
D60000h |
On |
On |
Off |
On |
Off |
On |
On |
On |
|
13.5MB |
D80000h |
Off |
Off |
On |
On |
Off |
On |
On |
On |
|
13.625MB |
DA0000h |
On |
Off |
On |
On |
Off |
On |
On |
On |
|
13.75MB |
DC0000h |
Off |
On |
On |
On |
Off |
On |
On |
On |
|
13.87MB |
DE0000h |
On |
On |
On |
On |
Off |
On |
On |
On |
|
14MB |
C00000h |
Off |
Off |
Off |
Off |
On |
On |
On |
On |
|
14.125MB |
E20000h |
On |
Off |
Off |
Off |
On |
On |
On |
On |
|
14.25MB |
E40000h |
Off |
On |
Off |
Off |
On |
On |
On |
On |
|
14.375MB |
E60000h |
On |
On |
Off |
Off |
On |
On |
On |
On |
|
14.5MB |
E80000h |
Off |
Off |
On |
Off |
On |
On |
On |
On |
|
14.625MB |
EA0000h |
On |
Off |
On |
Off |
On |
On |
On |
On |
|
14.75MB |
EC0000h |
Off |
On |
On |
Off |
On |
On |
On |
On |
|
14.87MB |
EE0000h |
On |
On |
On |
Off |
On |
On |
On |
On |
|
15MB |
F00000h |
Off |
Off |
Off |
On |
On |
On |
On |
On |
|
15.125MB |
F20000h |
On |
Off |
Off |
On |
On |
On |
On |
On |
|
15.25MB |
F40000h |
Off |
On |
Off |
On |
On |
On |
On |
On |
|
15.375MB |
F60000h |
On |
On |
Off |
On |
On |
On |
On |
On |
|
15.5MB |
F80000h |
Off |
Off |
On |
On |
On |
On |
On |
On |
|
15.625MB |
FA0000h |
On |
Off |
On |
On |
On |
On |
On |
On |
|
15.75MB |
FC0000h |
Off |
On |
On |
On |
On |
On |
On |
On |
|
15.87MB |
FE0000h |
On |
On |
On |
On |
On |
On |
On |
On |
|
I/O PORT ADDRESS CONFIGURATION | |||||
|
Address |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 | |
|
258h - 259h |
Off |
On |
Off |
Off | |
|
268h - 269h |
Off |
Off |
Off |
Off | |
|
208h - 209h |
On |
On |
On |
On | |
|
218h - 219h |
On |
Off |
On |
On | |
|
228h - 229h |
On |
Off |
On |
On | |
|
238h - 239h |
Off |
Off |
On |
On | |
|
248h - 249h |
On |
On |
Off |
On | |
|
278h - 279h |
Off |
Off |
Off |
On | |
|
288h - 289h |
On |
On |
On |
Off | |
|
298h - 299h |
Off |
On |
On |
Off | |
|
2A8h - 2A9h |
On |
Off |
On |
Off | |
|
2B8h - 2B9h |
Off |
Off |
On |
Off | |
|
2C8h - 2C9h |
On |
On |
Off |
Off | |
|
2D8h - 2D9h |
Off |
On |
Off |
Off | |
|
2E8h - 2E9h |
On |
Off |
Off |
Off | |
|
2F8h - 2F9h |
Off |
Off |
Off |
Off | |
|
MEMORY CARD CONFIGURATION | |||
|
Expanded |
Conventional/Extended memory |
SW1/5 |
SW1/6 |
|
0KB |
2MB |
On |
On |
|
0KB |
1.5MB |
On |
Off |
|
0KB |
1MB |
Off |
On |
|
0KB |
512KB |
Off |
Off |
|
2MB |
0KB |
Off |
Off |
|
1.5MB |
0KB |
Off |
Off |
|
1MB |
0KB |
Off |
Off |
|
512KB |
0KB |
Off |
Off |
|
PARITY CONFIGURATION | ||
|
Parity |
SW1/8 | |
|
Enabled |
On | |
|
Disabled |
Off | |
|
FACTORY CONFIGURED - DO NOT ALTER | |
|
Switch |
Position |
|
SW1/7 |
N/A |