Samsung S3C8275X - Manual (Page 155)

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X INSTRUCTION SET
6-21
BITS
— Bit Set
BITS dst.b
Operation: dst(b)
← 1
The BITS instruction sets the specified bit within the destination without affecting any other bits in
the destination.
Flags: No flags are affected.
Format:
Bytes Cycles Opcode
(Hex)
Addr Mode
dst
opc dst | b | 1 2 4 77 rb
NOTE: In the second byte of the instruction format, the destination address is four bits, the bit address 'b'
is three bits, and the LSB address value is one bit in length.
Example: Given: R1 = 07H:
BITS R1.3
→
R1 = 0FH
If 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).