Zilog Z86193 - Manual (Page 245)

Z8
®
CPU
User Manual
UM001604-0108 Instruction Description
238
Example 1
If Working Register R3 contains
16h
, the C Flag is set to 1, and Working Register R11
contains
20h
, the statement:
SBC R3, R11
Op Code: 32 3B
leaves the value
F5h
in Working Register R3. The C, S, and D Flags are set, and the Z, V,
and H Flags are all cleared.
Example 2
If Working Register R15 contains
16h
, the C Flag is not set, Working Register R10 con-
tains
20h
, and Register
20h
contains
11h
, the statement:
SBC R16, @R10
Op Code: 33 FA
leaves the value
05h
in Working Register R15. The D Flag is set, and the C, Z, S, V, and H
Flags are cleared.
Example 3
If Register
34h
contains
2Eh
, the C Flag is set, and Register
12h
contains
1Bh
, the state-
ment:
SBC 34h, 12h
Op Code: 34 12 34
leaves the value
13h
in Register
34h
. The D Flag is set, and the C, Z, S, V, and H Flags are
cleared.
Example 4
If Register
4Bh
contains
82h
, the C Flag is set, Working Register R3 contains
10h
, and
Register
10h
contains
01h
, the statement:
SBC 4Bh, @R3
Op Code: 35 E3 4B
leaves the value
80h
in Register
4Bh
. The D Flag is set, and the C, Z, S, V, and H flags are
cleared.
Example 5
If Register
6Ch
contains
2Ah
, and the C Flag is not set, the statement:
SBC 6Ch, #03h
Op Code: 36 6C 03
E src or E dst