A-29
Appendices
CP2E CPU Unit Software User’s Manual(W614)
A-1 Instruction Functions
App
A-1-12 Special Math Instructions
COMPLE-
MENT
COM @ Turns OFF all ON bits and turns ON all OFF bits in Wd.
DOUBLE
COMPLE-
MENT
COML @ Turns OFF all ON bits and turns ON all OFF bits in Wd and Wd+1.
A-1-12 Special Math Instructions
Instruction Mnemonic Variations Symbol/Operand Function
ARITHMETIC
PROCESS
APR @ Calculates the sine, cosine, or a linear extrapolation of the source
data.
The linear extrapolation function allows any relationship between
X and Y to be approximated with line segments.
BIT COUNTER BCNT @ Counts the total number of ON bits in the specified word(s).
N: Number of words
The number of words must be 0001 to FFFF (1 to 65,535 words).
A-1-13 Floating-point Math Instructions
Instruction Mnemonic Variations Symbol/Operand Function
FLOATING TO
16-BIT
FIX @ Converts a 32-bit floating-point value to 16-bit signed binary data
and places the result in the specified result word.
FLOATING TO
32-BIT
FIXL @ Converts a 32-bit floating-point value to 32-bit signed binary data
and places the result in the specified result words.
16-BIT TO
FLOATING
FLT @ Converts a 16-bit signed binary value to 32-bit floating-point data
and places the result in the specified result words.
Instruction Mnemonic Variations Symbol/Operand Function
COM(029)
Wd
Wd: Word
Wd → Wd: 1 → 0 and 0 → 1
COML(614)
Wd
Wd: Word
(Wd+1, Wd) → (Wd+1, Wd)
APR(069)
C
S
R
C: Control word
S: Source data
R: Result word
BCNT(067)
N
S
R
N: Number of words
S: 1st source word
R: Result word
S+(N 1)−
to
R
N words
Counts the number of
ON bits.
Binary
result
FIX(450)
S
R
S: 1st source word
R: Result word
S+1 S
R
Signed binary data
(16 bits)
Floating-point data
(32 bits)
FIXL(451)
S
R
S: 1st source word
R: 1st result word
S+1 S
R+1 R
Signed binary data
(32 bits)
Floating-point data
(32 bits)
S
R
FLT(452)
S: Source word
R: 1st result word
R+1 R
S
Signed binary data
(16 bits)
Floating-point data
(32 bits)
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