PIC16HV540 Datasheet, PDF (11/36 Pages) Microchip Technology – Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller With On-Chip Voltage Regulator

BSF
Bit Set f
Syntax:
[ label ] BSF f,b
Operands:
0 ≤ f ≤ 31
0≤b≤7
Operation:
1 → (f<b>)
Status Affected: None
Encoding:
0101 bbbf ffff
Description:
Bit 'b' in register 'f' is set.
Words:
1
Cycles:
1
Example:
BSF
FLAG_REG, 7
Before Instruction
FLAG_REG = 0x0A
After Instruction
FLAG_REG = 0x8A
BTFSC
Bit Test f, Skip if Clear
Syntax:
[ label ] BTFSC f,b
Operands:
0 ≤ f ≤ 31
0≤b≤7
Operation:
skip if (f<b>) = 0
Status Affected: None
Encoding:
0110 bbbf ffff
Description:
If bit 'b' in register 'f' is 0 then the next
instruction is skipped.
If bit 'b' is 0 then the next instruction
fetched during the current instruction
execution is discarded, and an NOP is
executed instead, making this a 2 cycle
instruction.
Words:
1
Cycles:
1(2)
Example:
HERE
FALSE
TRUE
BTFSC
GOTO
•
•
•
FLAG,1
PROCESS_CODE
Before Instruction
PC
= address (HERE)
After Instruction
if FLAG<1> =
PC
=
if FLAG<1> =
PC
=
0,
address (TRUE);
1,
address(FALSE)
PIC16HV540
BTFSS
Bit Test f, Skip if Set
Syntax:
[ label ] BTFSS f,b
Operands:
0 ≤ f ≤ 31
0≤b<7
Operation:
skip if (f<b>) = 1
Status Affected: None
Encoding:
0111 bbbf ffff
Description:
If bit 'b' in register 'f' is '1' then the next
instruction is skipped.
If bit 'b' is '1', then the next instruction
fetched during the current instruction
execution, is discarded and an NOP is
executed instead, making this a 2 cycle
instruction.
Words:
1
Cycles:
1(2)
Example:
HERE BTFSS
FALSE GOTO
TRUE •
•
•
FLAG,1
PROCESS_CODE
Before Instruction
PC
= address (HERE)
After Instruction
If FLAG<1> =
PC
=
if FLAG<1> =
PC
=
0,
address (FALSE);
1,
address (TRUE)
© 1998 Microchip Technology Inc.
Preliminary
DS40197A-page 11