MONOLITHIC SYSTEMS, INC. (COLORADO MSI) JUSTRAM/AT16 Card Type Memory Maximum Onboard Memory 16MB DRAM Data Bus 16-bit ISA [Image] USER CONFIGURABLE SETTINGS Setting Label Position » Normal address timing E3 Pins 2 & 3 closed 20ns delay for non-compatible machines E3 Pins 1 & 2 closed » All memory on board used for extended SW3/4 Off or expanded memory First 128KB on board used for SW3/4 On conventional memory above 512KB » Zero wait states enabled SW3/5 On Zero wait states disabled SW3/5 Off DRAM Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (2) 256K x None None None 9 1MB (2) 256K x (2) 256K x None None 9 9 1.5MB (2) 256K x (2) 256K x (2) 256K x None 9 9 9 2MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 2MB (2) 1M x 9 None None None 2.5MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 3MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 3.5MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 4MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 4MB (2) 1M x 9 (2) 1M x 9 None None 6MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 None 8MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 10MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 12MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 14MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 16MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 DRAM (CON’T) Size Bank 4 Bank 5 Bank 6 Bank 7 512KB None None None None 1MB None None None None 1.5MB None None None None 2MB None None None None 2MB None None None None 2.5MB (2) 256K x None None None 9 3MB (2) 256K x (2) 256K x None None 9 9 3.5MB (2) 256K x (2) 256K x (2) 256K x None 9 9 9 4MB (2) 256K x (2) 256K x (2) 256K x (2) 256K x 9 9 9 9 4MB None None None None 6MB None None None None 8MB None None None None 10MB (2) 1M x 9 None None None 12MB (2) 1M x 9 (2) 1M x 9 None None 14MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 None 16MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 DRAM JUMPERS Setting E1 256K x 9 SIPs used Open 1M x 9 SIPs used Closed EXPANDED MEMORY BASE I/O ADDRESSES Setting SW4/1 SW4/2 SW4/3 208h On On Off 248h On Off Off 288h Off On Off 2C8h Off Off Off Disabled N/A N/A On EXTENDED MEMORY SIZE 256KB SIP 1MB SIP Size SW3/1 SW3/2 SW3/3 Size 512KB 2MB On On On 1MB 4MB On On Off 1.5MB 6MB On Off On 2MB 8MB On Off Off 2.5MB 10MB Off On On 3MB 12MB Off On Off 3.5MB 14MB Off Off On 4MB 16MB Off Off Off EXTENDED MEMORY STARTING ADDRESS Setting SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 SW2/6 SW2/7 1024KB On On On Off On On On 1152KB On On On Off On On Off 1280KB On On On Off On Off On 1408KB On On On Off On Off Off 1536KB On On On Off Off On On 15744KB Off Off Off Off On Off Off 15872KB Off Off Off Off Off On On 16000KB Off Off Off Off Off On Off 16128KB Off Off Off Off Off Off On 16256KB Off Off Off Off Off Off Off Disabled 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) If SW2 is set to Disabled, SW1 should also be set to Disabled. EXTENDED MEMORY ENDING ADDRESS Setting SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 1152KB On On On Off On On On 1280KB On On On Off On On Off 1408KB On On On Off On Off On 1536KB On On On Off On Off Off 1664KB On On On Off Off On On 15872KB Off Off Off Off On Off Off 16000KB Off Off Off Off Off On On 16128KB Off Off Off Off Off On Off 16256KB Off Off Off Off Off Off On 16384KB Off Off Off Off Off Off Off Disabled 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. SW1/1 is the Most Significant Bit and switch SW1/7 is the Least Significant Bit. The switches have the following decimal values: SW1/1=8192, SW1/2=4096, SW1/3=2048, SW1/4=1024, SW1/5=512, SW1/6=256, SW1/7=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) If SW1 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, be sure that the amount of extended memory is a multiple of 4MB.