INPUT/OUTPUT PORTS

2)Two machine cycle instruction output timing

 

 

M2

 

 

 

 

 

 

M1

 

 

 

S1

S2

S3

S4

S5

S6

S1

S2

S3

S4

S5

S6

S1

1

 

 

 

 

 

 

 

 

 

 

 

 

XTAL1

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

ALE

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

2M CYCLE OP

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

W-PORT

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

1

PORT OLD DATA

 

 

PORT NEW DATA

 

 

PORT-OUT

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

MOV data address, # data ORL data address, # data ANL data address, # data XRL data address, # data JBC bit address, code address POP data address

MOV data address, @Rr MOV data address, Rr

MOV data address 1, data address 2 MOV bit address, C

Figure 5-16 Two machine cycle instruction port output time chart

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Sonic Alert msm85c154hvs Two machine cycle instruction output timing, Two machine cycle instruction port output time chart