/* GAL 1 (Address decoder) for SYS-Check V2.2      08/2015 by tfhh         */

CHIP   ADDRESS   GAL22V10

CLK    HIAD  A9   A8    A7  A6  A5  A4     A3      A2    RESET  GND
A10    A1    A0   D301  D0  D1  D2  OSSEL  MEMSEL  RO14  TOCLK  VCC
 
AR      = /RESET;	/* When RESET on computer was initiated, also reset latches of GAL */

MEMSEL := D0;
OSSEL  := D1;
/RO14  := D2;
 
/TOCLK = /HIAD * A10 * /A9 * /A8 * /A7 * /A6 * /A5 * /A4 * /A3 * A2 * A1 * /A0;         /* Load internal register when write to $D406 */

/D301 =  /HIAD * /A10 * A9 * A8 * /A7 * /A6 * /A5 * /A4 * /A3 * /A2 * /A1 * A0;         /* Generate clock pulse for 74LS74 when write to $D301 */




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