RCA RMB-167 manual Default GAL Equations, 1 U1 Equations

6 GAL EQUATIONS

Two PALCE16V8 are used. The first (U1) is responsible for the reset logic and auxiliary options, and the second (U2), for the memory decode logic. Refer to the circuit diagrams for more information.

6.1Default GAL Equations

6.1.1 U1 Equations

;U1 Bootstrap Loader Logic
;-----------------			PIN Declarations ---------------
; --- inputs ---
PIN	1		A18	COMBINATORIAL ;
PIN	2		A19	COMBINATORIAL ;
PIN	3		A20	COMBINATORIAL ;
PIN	4		A21	COMBINATORIAL ;
PIN	5		A22	COMBINATORIAL ;
PIN	6		A23	COMBINATORIAL ;
PIN	7		RSTIN_	COMBINATORIAL ;
PIN	8		RSTOUT_	COMBINATORIAL ;
PIN	9		CFG0	COMBINATORIAL ;
PIN 11			CFG1	COMBINATORIAL ;
; --- outputs ---
PIN	12		HISEG	COMBINATORIAL ;
PIN	13		RSTCYC	COMBINATORIAL ;
PIN	14		RSTCYC_	COMBINATORIAL ;
PIN	15		AUX0	COMBINATORIAL ;
PIN	16		AUX1	COMBINATORIAL ;
PIN	17		DUMMY	COMBINATORIAL ;
PIN	18		LEDRST_	COMBINATORIAL ;
PIN	19		LEDAUX_	COMBINATORIAL ;
;----------------- Boolean Equation Segment ------
EQUATIONS
RSTCYC		=	/( RSTIN_ * RSTCYC_ )
RSTCYC_		=	/( /RSTOUT_ * RSTCYC	)

HISEG	= A18 * A19 * A20 * A21 * A22 * A23
AUX0	=	1
AUX1	=	1
DUMMY	=	1
LEDRST_	=	RSTCYC
LEDAUX_	=	RSTCYC_

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