2 Instructions
2-164 CP1E CPU Unit Instructions Reference Manual(W483)
+BC/+BCL
Applicable Program Areas
Operands
Operand Specifications
Flags

Instruction Mnemonic Variations Function

code Function

BCD ADD WITH CARRY +BC @+BC 406 Adds 4-digit (single-word) BCD data and/or con-

stants with the Carry Flag (CY).

DOUBLE BCD ADD WITH

CARRY +BCL @+BCL 407 Adds 8-digit (double-word) BCD data and/or con-

stants with the Carry Flag (CY).

Symbol
+BC +BCL
Area Step program areas Subroutines Interrupt tasks
Usage OK OK OK
Operand Description Data type Size
+BC +BCL +BC +BCL
Au +BC: Augend word
+BCL:First augend word WORD DWORD 1 2
Ad +BC: Addend word
+BCL:First addend word WORD DWORD 1 2
R+BC: Result word
+BCL:First result word WORD DWORD 1 2
Area Word addresses Indirect DM addresses Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *D M
Au, Ad OK OK OK OK OK OK OK OK OK OK --- --- ---
R---
Name Label Operation
+BC +BCL
Error Flag P_ER ON when Au is not BCD.
ON when Ad is not BCD.
OFF in all other cases.
ON when Au, Au +1 is not BCD.
ON when Ad, Ad +1 is not BCD.
OFF in all other cases.
Equals Flag P_EQ ON when the result is 0.
OFF in all other cases.
ON when the result is 0.
OFF in all other cases.
Carry Flag P_CY ON when the addition results in a carry.
OFF in all other cases.
ON when the addition results in a carry.
OFF in all other cases.
+BC(406)
R
Au
Ad
Au: Augend word
Ad: Addend word
R: Result word
+BCL(407)
R
Au
Ad
Au: 1st augend word
Ad: 1st addend word
R: 1st result word