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CPU

User Manual

UM001604-0108 Instruction Description

162

Example 1

If Working Register R3 contains 16h, the C Flag is set to 1, and Working Register R11

contains

20h, the statement:

ADC R3, R11

Op Code: 12 3B

leaves the value 37h in Working Register R3. The C, Z, S, V, D, and H Flags are all

cleared.

Example 2

If Working Register R16 contains 16h, the C Flag is not set, Working Register R10 con-

tains

20h, and Register 20h contains 11h, the statement:

ADC R16, @R10

Op Code: 13 FA

leaves the value 27h in Working Register R16. The C, Z, S, V, D, and H Flags are all

cleared.

Example 3

If Register 34h contains 2Eh, the C Flag is set, and Register 12h contains 1Bh, the state-

ment:

ADC 34h, 12h

Op Code: 14 12 34

leaves the value 4Ah in Register 34h. The H Flag is set, and the C, Z, S, V, and D Flags are

cleared.

Example 4

If Register 4Bh contains 82h, the C Flag is set, Working Register R3 contains 10h, and

10h contains 01h, the statement:

ADC 4Bh, @R3

Op Code: 15 E3 4B

leaves the value 84h in Register 4Bh. The S Flag is set, and the C, Z, V, D, and H Flags are

cleared.

Example 5

If Register 6Ch contains 2Ah, and the C Flag is not set, the statement:

ADC 6Ch, #03h

Op Code: 16 6C 03

leaves the value 2Dh in Register 6Ch. The C, Z, S, V, D, and H Flags are all cleared.

Esrcor Edst

ZiLOG Z8 Series User Manual

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