Bits Bit Set - Samsung S3C84I8 User Manual

S3C84I8/F84I8/C84I9/F84I9
BITS
— Bit Set
dst.b
BITS
dst(b) ← 1
Operation:
The BITS instruction sets the specified bit within the destination without affecting any other bit in
the destination.
No flags are affected.
Flags:
Format:
opc
NOTE: In the second byte of the instruction format, the destination address is four bits, the bit
Given: R1 = 07H:
Example:
BITS
If the working register R1 contains the value 07H (00000111B), the statement "BITS R1.3" sets
bit three of the destination register R1 to "1", leaving the value 0FH (00001111B).
dst | b | 1
address "b" is three bits, and the LSB address value is one bit in length.
→
R1.3
Bytes Cycles
2
R1 = 0FH
INSTRUCTION SET
Opcode Addr Mode
(Hex)
4 77
dst
rb
6-21