Rev. 5.00, 12/03, page 44 of 1088
Type
Instruction
Size
*
1
Function
Arithmetic
operations
DIVXS
B/W
Rd ÷ Rs
→
Rd
Performs signed division on data in two general
registers: either 16 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.
NEG
B/W/L
0 – Rd
→
Rd
Takes the two's complement (arithmetic complement) of
data in a 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.
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.
TAS
B
@ERd – 0, 1
→
(<bit 7> of @Erd)
*
2
Tests memory contents, and sets the most significant bit
(bit 7) to 1.
Содержание H8S/2318 series
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