CHIP   ADDRESS   GAL22V10

/* Left GAL (Address decoder) for SYS-Check V2.1      12/2014 by tfhh      */
/*                                                                         */
/* 3rd place ABBUC hardware contest 2014                                   */

CLK    HIAD  A9   A8    A7  A6  A5  A4     A3      A2    RESET  GND
A10    A1    A0   D301  D0  D1  D2  OSSEL  MEMSEL  RA14  TOCLK  VCC
 
AR      = /RESET;	/* When RESET on computer was initiated, also reset latches of GAL */

MEMSEL := D0;
OSSEL  := D1;
/RA14  := 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 */




  