QUADBOARD MEMORY BANK ENABLING TOTAL QUADBOARD QUADBOARD SWITCH 1 POSITIONS MEMORY 5 6 7 8 64K OFF OFF OFF ON 128K OFF OFF ON ON 192K OFF ON ON ON 256K ON ON ON ON See PC DIP switch settings for how to set the system motherboard. QUADBOARD MEMORY QUADBOARD SWITCH 1 SETTINGS STARTING ADDRESS 1 2 3 4 64K ON ON ON OFF 128K ON ON OFF ON 192K ON ON OFF OFF 256K ON OFF ON ON 320K ON OFF ON OFF 384K ON OFF OFF ON 448K ON OFF OFF OFF 512K OFF ON ON ON 576K OFF ON ON OFF 640K OFF ON OFF ON 704K OFF ON OFF OFF 768K OFF OFF ON ON 832K OFF OFF ON OFF 896K OFF OFF OFF ON 960K OFF OFF OFF OFF QUADBOARD SWITCH 2 SETTINGS 1 ON - MEMORY PARITY ENABLED 1 OFF - MEMORY PARITY DISABLED 2 ON - CLOCK ENABLED 2 OFF - CLOCK DISABLED 3 NOT USED 4 ON - PARALLEL PORT ENABLED 4 OFF - PARALLEL PORT DISABLED 5 OFF, 6 OFF - PARALLEL PORT DISABLED 5 OFF, 6 ON - LPT1 5 ON, 6 OFF - LPT2 5 ON, 6 ON - NOT USED 7 OFF, 8 OFF - SERIAL PORT DISABLED 7 OFF, 8 ON - COM 2 7 ON, 8 OFF - COM 1 7 ON, 8 ON - NOT USED AST SIX-PACK PLUS Partial listing Assumes 384K on adapter and 256K on system board (640K total) Switch 1 (starting address 256K) S1-1 OFF S1-2 ON S1-2 ON PARITY CHECK ENABLE S1-8 ON 384K ON ADAPTER S1-4 ON S1-5 ON S1-6 OFF PIN 6 CLOCK ENABLE ON PIN 1 & PIN 2 COM SELECT PIN 3 & PIN 4 INTERRUPT SELECT