IBM CORPORATION
ENHANCED MEMORY EXPANSION ADAPTER
|
Card Type |
Multi I/O card |
|
Maximum Onboard Memory |
15.5MB DRAM |
|
I/O Options |
Serial port, parallel port, 32-pin SIMM memory slots (12) |
|
Data Bus |
16-bit ISA |
|
CONNECTIONS | |||
|
Function |
Location |
Function |
Location |
|
Serial port |
CN1 |
Parallel port |
CN2 |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
512KB |
(2) 256KB x 9 |
None |
None |
|
1MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
None |
|
1MB |
(2) 512KB x 9 |
None |
None |
|
1.5MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 256KB x 9 |
|
2MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 256KB x 9 |
|
2MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
None |
|
2MB |
(2) 1MB x 9 |
None |
None |
|
2.5MB |
(2) 256KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
3MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 256KB x 9 |
|
3MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
3.5MB |
(2) 256KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
4MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 256KB x 9 |
|
4MB |
(2) 1MB x 9 |
(2) 1MB x 9 |
None |
|
4.5MB |
(2) 256KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
6MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 512KB x 9 |
|
6.5MB |
(2) 256KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
7MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
2) 512KB x 9 |
|
14MB |
(2) 1MB x 9 |
(2) 1MB x 9 |
(2) 1MB x 9 |
|
DRAM CONFIGURATION (CONT’D) | ||||
|
Size |
Bank 3 |
Bank 4 |
Bank 5 |
Bank 6 |
|
512KB |
None |
None |
None |
None |
|
1MB |
None |
None |
None |
None |
|
1MB |
None |
None |
None |
None |
|
1.5MB |
None |
None |
None |
None |
|
2MB |
(2) 256KBx9 |
None |
None |
None |
|
2MB |
None |
None |
None |
None |
|
2MB |
None |
None |
None |
None |
|
2.5MB |
None |
None |
None |
None |
|
3MB |
(2) 256KB x 9 |
256KB x 9 |
256KB x 9 |
None |
|
3MB |
None |
None |
None |
None |
|
3.5MB |
(2) 512KB x 9 |
None |
None |
None |
|
4MB |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 256KB x 9 |
(2) 512KB x 9 |
|
4MB |
None |
None |
None |
None |
|
4.5MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
None |
None |
|
6MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
6.5MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
7MB |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
(2) 512KB x 9 |
|
14MB |
(2) 1MB x 9 |
(2) 1MB x 9 |
(2) 1MB x 9 |
(2) 1MB x 9 |
|
Note: If you are installing a mix of 256KB and 512KB SIMM’s, then you must install the 256KB SIMM’s first, starting at BANK 0. When you install 1MB SIMM modules on the board, you must only use 1MB SIMM modules throughout the board. | ||||
|
EXPANSION MEMORY CONFIGURATION | |||||
|
Size |
SW 1 |
SW 2 |
SW 3 |
SW 4 |
SW 5 |
|
1MB |
Off |
Off |
Off |
On |
Off |
|
1.5MB |
Off |
Off |
Off |
On |
On |
|
2MB |
Off |
Off |
On |
Off |
Off |
|
2.5MB |
Off |
Off |
On |
Off |
On |
|
3MB |
Off |
Off |
On |
On |
Off |
|
3.5MB |
Off |
Off |
On |
On |
On |
|
4MB |
Off |
On |
Off |
Off |
Off |
|
4.5MB |
Off |
On |
Off |
Off |
On |
|
5MB |
Off |
On |
Off |
On |
Off |
|
5.5MB |
Off |
On |
Off |
On |
On |
|
6MB |
Off |
On |
On |
Off |
Off |
|
6.5MB |
Off |
On |
On |
Off |
On |
|
7MB |
Off |
On |
On |
On |
Off |
|
7.5MB |
Off |
On |
On |
On |
On |
|
8MB |
On |
Off |
Off |
Off |
Off |
|
8.5MB |
On |
Off |
Off |
Off |
On |
|
9MB |
On |
Off |
Off |
On |
Off |
|
9.5MB |
On |
Off |
Off |
On |
On |
|
EXPANSION MEMORY CONFIGURATION (CONT’D) | |||||
|
Size |
SW1 |
SW2 |
SW3 |
SW4 |
SW5 |
|
10MB |
On |
Off |
On |
Off |
Off |
|
10.5MB |
On |
Off |
On |
Off |
On |
|
11MB |
On |
Off |
On |
On |
Off |
|
11.5MB |
On |
Off |
On |
On |
On |
|
12MB |
On |
On |
Off |
Off |
Off |
|
12.5MB |
On |
On |
Off |
Off |
On |
|
13MB |
On |
On |
Off |
On |
Off |
|
13.5MB |
On |
On |
Off |
On |
On |
|
14MB |
On |
On |
On |
Off |
Off |
|
14.5MB |
On |
On |
On |
Off |
On |
|
15MB |
On |
On |
On |
On |
Off |
|
15.5MB |
On |
On |
On |
On |
On |
|
Note: If you are adding base memory, then switches 1-5 should specify a 1MB starting address. If there is already expansion memory installed, the starting address of the adapter must follow the last address of the existing memory. | |||||
|
BASE MEMORY CONFIGURATION | ||
|
Function |
SW1/6 |
SW1/7 |
|
Base memory address selection (256KB) |
On |
Off |
|
Base memory address selection (512KB) |
Off |
On |
|
Base memory address selection (640KB) |
Off |
Off |
|
Note: If you have 640KB of base memory, the switch settings depend on the amount of expansion memory you have installed. | ||
|
PARALLEL PORT ADDRESS SELECTION | ||
|
Setting |
Label |
Position |
|
LPT1 (378h) |
JN2 |
Pins 1 & 2, 3 & 4 closed |
|
LPT2 (278h) |
JN2 |
Pins 5 & 6, 7 & 8 closed |
|
Note: 4-pin jumper module needs to be rotated 180 degrees to set either LPT1 or LPT2. | ||
|
SERIAL PORT 1 ADDRESS SELECTION | ||
|
Setting |
Label |
Position |
|
COM1 (3F8h) |
JN1 |
Pins 1 & 2, 3 & 4 closed |
|
COM2 (2F8h) |
JN1 |
Pins 5 & 6, 7 & 8 closed |
|
Note: 4-pin jumper module needs to be rotated 180 degrees to set either COM1 or COM2. | ||