Datasheet

Section 2 CPU

Rev. 8.00 Mar. 09, 2010 Page 46 of 658

REJ09B0042-0800

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

Instruction Size

Function

BSET B 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.

BCLR B 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.

BNOT B ~ (<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.

BTST B ~ (<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.

BAND B 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.

BIAND B C ∧ [~ (<bit-No.> of <EAd>)] → C

ANDs the C flag with the inverse of a specified bit in a general

The bit number is specified by 3-bit immediate data.

BOR B 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.

BIOR B C ∨ [~ (<bit-No.> of <EAd>)] → C

ORs the C flag with the inverse of a specified bit in a general

The bit number is specified by 3-bit immediate data.

Note: * Size: Operand size

B: Byte