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Infomagic - Games of Daze (Summer 1995) (Disc 1 of 2).iso
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counter.pds
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1994-10-05
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1KB
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33 lines
;---------------------------------------------------------
; Now we'll use the combinational incrementer module to
; build a resetable counter.
;---------------------------------------------------------
CHIP cntr NFX780_84
PIN 47 clock ;* the clock for the entire circuit
PIN 48 reset ;* resets the counter to 0
PIN cnt[0:2] ;* the output of the counter
PIN nxt[0:2] ;* the next state of the counter
PIN [34:37] s[0:3] ;* LED segment drivers
PIN [39:41] s[4:6] ;* LED segment drivers
MODULE incrmntr( rst=reset, cur[0:2]=cnt[0:2],
nxt[0:2]=nxt[0:2] )
MODULE leddigit( d[0:2]=cnt[0:2], d3=GND, s[0:6]=s[0:6] )
EQUATIONS
cnt[0:2] := nxt[0:2] ;* next state becomes
cnt[0:2].ACLK = clock ;* curr. state on pos. clk
SIMULATION
VECTOR cnt := [cnt2,cnt1,cnt0]
TRACE_ON clock cnt
SETF /clock ;* set the clock low to start
SETF reset ;* activate the reset input
CLOCKF clock ;* clock the counter to reset it
SETF /reset ;* deactivate the reset
for i:=0 TO 20 DO
BEGIN
CLOCKF clock
END