Chapter 12 Instruction list Manual VIPA CPU 21x
Command
Operand
Parameter
Status word
Function
Length
in
BR CC1 CC0 OV OS OR STA RLO /FC
words
: Instruction depends on
: Instruction influences
12-34 HB103E - Rev. 05/45
Counter instructions
Counter instructions
Status word The counter value is in ACCU1-L res. in the
address transferred as parameter.
S C f
0 to 255
BR CC1 CC0 OV OS OR STA RLO /FC
Presetting of counter on edge change from "0" to "1". 1/2
Counter p.
- - - - - - - Y - 2
R C f
0 to 255
- - - - - 0 - - 0 Reset counter to "0". 1/2
Counter p.
2
CU C f
0 to 255
Increment counter by 1 on edge change from "0" to "1". 1/2
Counter p.
2
CD C f
0 to 255
Decrement counter by 1 on edge change from "0" to "1". 1/2
Counter p.
2
FR C f
0 to 255
Enable counter on edge change from "0" to "1". 1/2
Counter p.
(reset the edge bit memory for up and down counting) 2
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