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Floating decimal point addition
Function
Floating decimal point subtraction
Data linking
Floating decimal point multiplication
QCPU
AnACPU/AnUCPU
E+
E-
NUNI
E*
ADD
SUB
UNI
MUL
Data dissociation
NDIS
DIS
Floating decimal point division
E/
DIV
Changing check pattern
CHKCIR, CHKEND
CHK, CHKEND
AnACPU/AnUCPU
QCPU
S, D, n indicate the data used in the instructions.
n
S D
Instruction name
Command
LEDA(B)
Instruction name
Command
LEDC/SUB
S
LEDC/SUB
D
LEDC/SUB
n
LEDR
Several AnACPU/AnUCPU dedicated instructions were used in the program. However,
converting the program to QCPU format reduced them to just one instruction. Can this
program be executed as it is?
Frequently asked questions regarding the conversion of ACPU to QCPU program
(Inquiry example)
Replacing AnACPU/AnUCPU dedicated instructions with QCPU instructions changes and
simplifies the instruction format.
Further modification of the program is not necessary.
(Answer)
Can the AnACPU/AnUCPU dedicated instructions for special function modules also be
replaced?
(Inquiry example)
AnACPU/AnUCPU special function modules and QCPU intelligent function modules have
different functions, specifications, number of occupied points, etc.
The AnACPU/AnUCPU special function module instructions cannot access the QCPU,
therefore, they are replaced with "SM1255" as unconvertible instructions.
Modify the program according to the functions and specifications of QCPU intelligent
function modules.
Instructions for extended file registers and data link are also replaced with "SM1255."
Please modify the instructions in accordance with QCPU functions and specifications.
(Answer)
AnACPU/AnUCPU dedicated instructions can be converted into QCPU instruction format. This section explains
the replacement of AnACPU/AnUCPU dedicated instructions.
7.2 Replace AnACPU/AnUCPU dedicated instructions
(1) Representations of dedicated instruction
The QCPU unifies AnACPU/AnUCPU dedicated instructions- LEDA, LEDB, LEDC, SUB, and LEDR- into one
single instruction, which has the same format as the basic and application instructions.
Instructions that do not have a corresponding QCPU instruction are replaced with "OUT SM1255". Replace or
delete the instructions that have been converted to "OUT SM1255".
(2) Dedicated instructions with changed instruction names
In AnACPU/AnUCPU, dedicated instructions share the same name as basic and application instructions.
In QCPU, instruction names have been changed.
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7.2 Replace AnACPU/AnUCPU dedicated instructions
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