
41
3.2 Functions
Chapter 3 Functions
Add carry flag
ADdition Carry Flag
[ Selectable dest
]
dest
R0L/R0 R0H/R1 R1L/R2 R1H/R3
A0/A0 A1/A1 [A0] [A1]
dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB]
dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16
dsp:20[A0] dsp:20[A1] abs20
R2R0 R3R1 A1A0
ADCF ADCF
[ Function ]
[ Flag Change ]
Conditions
O : The flag is set when a signed operation resulted in exceeding +32767 (.W) or –32768 (.W) or
+127 (.B) or –128 (.B); otherwise cleared.
S : The flag is set when the operation resulted in MSB = 1; otherwise cleared.
Z : The flag is set when the operation resulted in 0; otherwise cleared.
C : The flag is set when an unsigned operation resulted in exceeding +65535 (.W) or +255 (.B);
otherwise cleared.
[ Description Example ]
ADCF.B R0L
ADCF.W Ram:16[A0]
[ Related Instructions ] ADC,ADD,SBB,SUB
B , W
[ Syntax ]
ADCF.size dest
[ Operation ]
dest dest + C
UIOBSZDC
This instruction adds
dest
and C flag together and stores the result in
dest
.
142
[ Instruction Code/Number of Cycles ]
Page=
Change
Flag
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