Rev. 1.0, 02/00, page 38 of 1141
Instruction
Size
*
Function
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)
Tests memory contents, and sets the most significant bit (bit 7)
to 1
Note:
*
Size refers to the operand size.
B:
Byte
W: Word
L:
Longword