Hitachi H8/3692 Benutzerhandbuch
Rev. 1.0, 07/01, page 20 of 372
Table 2-3
Arithmetic Operations Instructions (2)
Instruction
Size
*
Function
DIVXS
B/W
Rd ÷ Rs
→
Rd
Performs signed division on data in two general registers: either 16 bits ÷
8 bits
8 bits
→
8-bit quotient and 8-bit remainder or 32 bits ÷ 16 bits
→
16-bit
quotient and 16-bit remainder.
CMP
B/W/L
Rd – Rs, Rd – #IMM
Compares data in a general register with data in another general register
or with immediate data, and sets CCR bits according to the result.
Compares data in a general register with data in another general register
or with immediate data, and sets CCR bits according to the result.
NEG
B/W/L
0 – Rd
→
Rd
Takes the two's complement (arithmetic complement) of data in a
general register.
general register.
EXTU
W/L
Rd (zero extension)
→
Rd
Extends the lower 8 bits of a 16-bit register to word size, or the lower 16
bits of a 32-bit register to longword size, by padding with zeros on the
left.
bits of a 32-bit register to longword size, by padding with zeros on the
left.
EXTS
W/L
Rd (sign extension)
→
Rd
Extends the lower 8 bits of a 16-bit register to word size, or the lower 16
bits of a 32-bit register to longword size, by extending the sign bit.
bits of a 32-bit register to longword size, by extending the sign bit.
Note:
*
Refers to the operand size.
B: Byte
W: Word
L: Longword