Bcdaddc Bcd Addition (With Carry - Panasonic MN101L Series User Manual

2.4.6

BCDADDC BCD addition (with carry)

BCDADDC (MOV 0x20, (0x03F07))
Operation
Bit Changes
VF: 0
NF: 0
CF: Set if the result is bigger than "99", otherwise set to "0".
ZF: Set if the result is "0", otherwise set to "0".
Execution of BCD addition (without carry)
1. Store the 8-bit value of the two-digit BCD to add to the D0 register and D1 register. Store the carry in the
PSW.
2. Execute MOV 0x20, (0x03F07) (Extended calculation macro instruction BCDADDC).
3. Adds the D0 register (8-bit) and the D1 register (8-bit) as the value of each two-digit BCD and PSW.CF, and
stores the result (8-bit) after the BCD correction to the D0 register.
When this extended calculation instruction is executed, the handy address (HA) is updated in
"0x03F07"
.. ..
In this instruction, do not enter the value that can not be represented in BCD. If you enter it,
the result is not guaranteed.
.. ..
D0 (BCD) + D1 (BCD) + PSW.CF → D0 (BCD)
Adds the D0 register (8-bit) and the D1 register (8-bit) as the value of each two-digit
BCD and PSW.CF, and stores the result (8-bit) after the BCD correction to the D0 reg-
ister.
VF NF CF
0 0
Size, Cycles, Codes
6 nibbles
4 cycles
0000 0010 0111 0000 0000 0010
Extended Calculation Instruction
Chapter 2
CPU
ZF
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