Bit Manipulations - Renesas H8/38024 Hardware Manual

2.5.5

Bit Manipulations

Table 2.8 describes the bit-manipulation instructions. Figure 2.7 shows their object code formats.
Table 2.8 Bit-Manipulation Instructions
Size *
Instruction
BSET B
BCLR B
BNOT B
BTST B
BAND B
BIAND B
BOR B
BIOR B
Notes: * Size: Operand size
B: Byte
Function
1 → (<bit-No.> of <EAd>)
Sets a specified bit in a general register or memory to 1. The bit
number is specified by 3-bit immediate data or the lower three bits
of a general register.
0 → (<bit-No.> of <EAd>)
Clears a specified bit in a general register or memory to 0. The bit
number is specified by 3-bit immediate data or the lower three bits
of a general register.
~ (<bit-No.> of <EAd>) → (<bit-No.> of <EAd>)
Inverts a specified bit in a general register or memory. The bit
number is specified by 3-bit immediate data or the lower three bits
of a general register.
~ (<bit-No.> of <EAd>) → Z
Tests a specified bit in a general register or memory and sets or
clears the Z flag accordingly. The bit number is specified by 3-bit
immediate data or the lower three bits of a general register.
C ∧ (<bit-No.> of <EAd>) → C
ANDs the C flag with a specified bit in a general register or
memory, and stores the result in the C flag.
C ∧ [~ (<bit-No.> of <EAd>)] → C
ANDs the C flag with the inverse of a specified bit in a general
register or memory, and stores the result in the C flag.
The bit number is specified by 3-bit immediate data.
C ∨ (<bit-No.> of <EAd>) → C
ORs the C flag with a specified bit in a general register or memory,
and stores the result in the C flag.
C ∨ [~ (<bit-No.> of <EAd>)] → C
ORs the C flag with the inverse of a specified bit in a general
register or memory, and stores the result in the C flag.
The bit number is specified by 3-bit immediate data.
Rev. 6.00, 08/04, page 45 of 628