MONOLITHIC SYSTEMS, INC. (COLORADO MSI) JUSTRAM/ATZ Card Type Memory Maximum Onboard Memory 8MB DRAM Data Bus 16-bit ISA [Image] CONNECTIONS Function Label Function Label Daughterboard header CN1A Header to main board (on CN2B back) Header to main board (on CN1B Daughterboard header CN3A back) Daughterboard header CN2A Header to main board (on CN3B back) USER CONFIGURABLE SETTINGS Setting Label Position » Factory configured - do not alter E1 Unidentified » Normal address timing JP5 Pins 1 & 2 closed 20ns delay for non-compatible JP5 Pins 2 & 3 closed machines » Factory configured - do not alter JP8 Pins 2 & 3 closed » Zero wait states enabled JP13 Closed Zero wait states disabled JP13 Open DRAM Setting Bank 0 P0 Bank 1 P1 2MB (16) 1M x 1 (2) 1M x 1 None None 4MB (16) 1M x 1 (2) 1M x 1 (16) 1M x 1 (2) 1M x 1 6MB (16) 1M x 1 (2) 1M x 1 (16) 1M x 1 (2) 1M x 1 8MB (16) 1M x 1 (2) 1M x 1 (16) 1M x 1 (2) 1M x 1 DRAM (CON’T) Setting Bank 2 P2 Bank 3 P3 2MB None None None None 4MB None None None None 6MB (16) 1M x 1 (2) 1M x 1 None None 8MB (16) 1M x 1 (2) 1M x 1 (16) 1M x 1 (2) 1M x 1 CONVENTIONAL MEMORY Setting SW1/7 SW1/8 » All memory on board used for extended Off Off or expanded memory First 128KB on board used for On On conventional memory above 512KB EXPANDED MEMORY BASE I/O ADDRESSES Main Board Daughter Board SW1/1 SW1/2 SW1/3 208h 218h On On On 228h 238h On On Off 248h 258h On Off On 268h 278h On Off Off 288h 298h Off On On 2A8h 2B8h Off On Off 2C8h 2D8h Off Off On 2E8h 2F8h Off Off Off EXTENDED MEMORY SIZE Setting SW1/5 SW1/6 0MB N/A N/A 2MB On On 4MB On Off 6MB Off Off 8MB Off Off EXTENDED MEMORY STARTING ADDRESS Setting SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 SW2/6 SW2/7 SW2/8 1024KB On On On Off On On On On 1152KB On On On Off On On Off On 1280KB On On On Off On Off On On 1408KB On On On Off On Off Off On 1536KB On On On Off Off On On On 15744KB Off Off Off Off On Off Off On 15872KB Off Off Off Off Off On On On 16000KB Off Off Off Off Off On Off On 16128KB Off Off Off Off Off Off On On 16256KB Off Off Off Off Off Off Off On Disabled Off Off Off Off Off Off Off Off Note: A total of 112 memory address settings are available. The switches are a binary representation of the decimal memory addresses. SW2/1 is the Most Significant Bit and switch SW2/7 is the Least Significant Bit. The switches have the following decimal values: SW2/1=8192, SW2/2=4096, SW2/3=2048, SW2/4=1024, SW2/5=512, SW2/6=256, SW2/7=128. Turn off the switches and add the values of the switches that are off obtain the correct starting memory address. (Off=1, On=0). SW2/8 does not affect the address, but enables or disabled extended memory. If SW2 is set to Disabled, SW3 should also be set to Disabled. EXTENDED MEMORY ENDING ADDRESS Setting SW3/1 SW3/2 SW3/3 SW3/4 SW3/5 SW3/6 SW3/7 SW3/8 1152KB On On On Off On On On Off 1280KB On On On Off On On Off Off 1408KB On On On Off On Off On Off 1536KB On On On Off On Off Off Off 1664KB On On On Off Off On On Off 15872KB Off Off Off Off On Off Off Off 16000KB Off Off Off Off Off On On Off 16128KB Off Off Off Off Off On Off Off 16256KB Off Off Off Off Off Off On Off 16384KB Off Off Off Off Off Off Off Off Disabled On On On On On On On On Note: A total of 112 memory address settings are available. The switches are a binary representation of the decimal memory addresses. SW3/1 is the Most Significant Bit and switch SW3/7 is the Least Significant Bit. The switches have the following decimal values: SW3/1=8192, SW3/2=4096, SW3/3=2048, SW3/4=1024, SW3/5=512, SW3/6=256, SW3/7=128. Turn off the switches and add the values of the switches that are off to 128KB obtain the correct starting memory address. (Off=1, On=0). SW3/8 does not affect the address, but enables or disabled extended memory. If SW3 is set to Disabled, SW2 should also be set to Disabled. MISCELLANEOUS TECHNICAL NOTE The board may be configured for any combination of conventional, expanded, and extended memory. When conventional memory is enabled, be sure to subtract 128KB from the remaining memory. When configured for both extended and expanded memory, the memory on the main board will act as the extended memory, and the memory on the daughter board will be the expanded memory.