Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 481

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BCD Calculation Instructions

When the execution condition is OFF, ADDL(54) is not executed. When the

execution condition is ON, ADDL(54) adds the contents of CY to the 8-digit val-

ue in Au and Au+1 to the 8-digit value in Ad and Ad+1, and places the result in R

and R+1. CY will be set if the result is greater than 99999999.

Au and/or Ad is not BCD.

Indirectly addressed DM word is non-existent. (Content of *DM word is

not BCD, or the DM area boundary has been exceeded.)

ON when there is a carry in the result.

ON when the result is 0.

When 00000 is ON, the following program section adds two 12-digit numbers,

the first contained in LR 00 through LR 02 and the second in DM 0010 through

DM 0012. The result is placed in HR 10 through HR 13.

The rightmost 8 digits of the two numbers are added using ADDL(54), i.e., the

contents of LR 00 and LR 01 are added to DM 0010 and DM 0011 and the results

is placed in HR 10 and HR 11. The second addition adds the leftmost 4 digits of

each number using ADD(30), and includes any carry from the first addition. The

last instruction, ADB(50) (see 7-22-1 BINARY ADD – ADB(50)) adds two all-

zero constants to place any carry from the second addition into HR 13.

Address Instruction

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