Renesas Hitachi H8S/2194 Series Hardware Manual page 63

Instruction Size
DIVXS B/W
CMP B/W/L
NEG B/W/L
EXTU W/L
EXTS W/L
TAS B
Note: *1 Size refers to the operand size.
B: Byte
W: Word
L: Longword
*2 Only register ER0, ER1, ER4, or ER5 should be used when using the TAS instruction.
Rev. 2.0, 11/00, page 36 of 1037
*
1
Function
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
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
0 - Rd → Rd
Takes the two's complement (arithmetic complement) of data in
a general register
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
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
@ERd - 0, 1 → (<bit 7> of @ERd)
Tests memory contents, and sets the most significant bit (bit 7)
to 1
* 2