MC68EC000EI20 Freescale Semiconductor, MC68EC000EI20 Datasheet - Page 239
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MC68EC000EI20
Manufacturer Part Number
MC68EC000EI20
Description
IC MPU 32BIT 20MHZ 68-PLCC
Manufacturer
Freescale Semiconductor
Specifications of MC68EC000EI20
Processor Type
M680x0 32-Bit
Speed
20MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
68-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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MULS
Operation:
Assembler
Syntax:
Attributes:
Description: Multiplies two signed operands yielding a signed result. This instruction has a
Condition Codes:
MOTOROLA
word operand form and a long operand form.
In the word form, the multiplier and multiplicand are both word operands, and the result
is a long-word operand. A register operand is the low-order word; the upper word of the
register is ignored. All 32 bits of the product are saved in the destination data register.
In the long form, the multiplier and multiplicand are both long- word operands, and the
result is either a long word or a quad word. The long-word result is the low-order 32 bits
of the quad- word result; the high-order 32 bits of the product are discarded.
X — Not affected.
N — Set if the result is negative; cleared otherwise.
Z — Set if the result is zero; cleared otherwise.
V — Set if overflow; cleared otherwise.
C — Always cleared.
—
X
Overflow (V = 1) can occur only when multiplying 32-bit
operands to yield a 32-bit result. Overflow occurs if the high-
order 32 bits of the quad-word product are not the sign extension
of the low- order 32 bits.
N
M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL
Source x Destination
MULS.W < ea > ,Dn16 x 16
*MULS.L < ea > ,Dl
*MULS.L < ea > ,Dh – Dl 32 x 32
Size = (Word, Long)
*Applies to MC68020, MC68030, MC68040, CPU32
Z
V
C
0
Signed Multiply
(M68000 Family)
NOTE
Destination
32 x 32
32
32
64
Integer Instructions
MULS
4-135
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