AT-RAMBANK Memory card Settings and Configuration

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

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AT-RAMBANK Memory card Settings and Configuration

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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

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