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

 



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