TITLE           State Machine #x
PATTERN         lab6.pds
REVISION        1
AUTHOR          duber
COMPANY         ertw
DATE            11/6/00

CHIP lab6 PAL16V8

CP NC NC NC NC CE MR NC X GND
/OE Y2 Y1 Y0 NC NC NC NC NC VCC

STATE
MOORE_MACHINE

;state assignments
S0 = /Y2 * /Y1 * /Y0            ;000
S1 = /Y2 * /Y1 * Y0             ;001
S2 = /Y2 * Y1 * /Y0             ;010
S3 = /Y2 * Y1 * Y0              ;011
S4 = Y2 * /Y1 * /Y0             ;100
S5 = Y2 * /Y1 * Y0              ;101
S6 = Y2 * Y1 * /Y0              ;110
S7 = Y2 * Y1 * Y0               ;111

;state transitions
S0:=     XZERO -> S5
	+XONE -> S6
	+RESET -> S0
	+STOP -> S0
S1:=     XZERO -> S4
	+XONE -> S2
	+RESET -> S0
	+STOP -> S1
S2:=     XZERO -> S2
	+XONE -> S7
	+RESET -> S0
	+STOP -> S2
S3:=     XZERO -> S0
	+XONE -> S7
	+RESET -> S0
	+STOP -> S3
S4:=     XZERO -> S7
	+XONE -> S4
	+RESET -> S0
	+STOP -> S4
S5:=     XZERO -> S4
	+XONE -> S3
	+RESET -> S0
	+STOP -> S5
S6:=     XZERO -> S3
	+XONE -> S7
	+RESET -> S0
	+STOP -> S6
S7:=     XZERO -> S1
	+XONE -> S7
	+RESET -> S0
	+STOP -> S7

CONDITIONS

XZERO = CE*/X*/MR                ;clock enable high, X=0, RESET low
XONE  = CE*X*/MR                 ;clock enable high, X=1, RESET low
RESET = CE*MR                    ;RESET is high
STOP  = /CE                      ;clock enable low
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