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 [Image] 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 (2) 256KB x (2) 512KB x 9 9 9 4MB None None None None 4.5MB (2) 512KB x 9 (2) 512KB x None None 9 6MB (2) 512KB x 9 (2) 512KB x (2) 512KB x (2) 512KB x 9 9 9 6.5MB (2) 512KB x 9 (2) 512KB x (2) 512KB x (2) 512KB x 9 9 9 7MB (2) 512KB x 9 (2) 512KB x (2) 512KB x (2) 512KB x 9 9 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 On Off (256KB) Base memory address selection Off On (512KB) Base memory address selection Off Off (640KB) 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.