Zilog Z8F0130 - Manual (Page 249)

eZ8
™
CPU Core
User Manual
UM012820-0810 SUB Instruction
234
SUB R15, @R10

Object Code: 23 FA
The D flag is set, and the C, Z, S, V, and H flags are cleared.
If Register 34h contains the value 2Eh , and Register 12h contains the
value 1bh , the following statement leaves the value 13h in Register 34h ,
sets the D flag, and clears the C, Z, S, V, and H flags are cleared:
SUB 34h, 12h

Object Code: 24 12 34
If Register 4Bh contains the value 82h , Working Register R3 contains the
value 10h , and Register 10h contains the value 01h , the following state-
ment leaves the value 81h in Register 4Bh , sets the D and S flags and
clears the C, Z, V, and H flags are cleared:
SUB 4Bh, @R3

Object Code: 25 E3 4B
If Register 6Ch contains the value 2Ah , the following statement leaves the
value 27h in Register 6Ch , sets the D flag, and clears the C, Z, S, V, and H
flags are cleared:
SUB 6Ch, #03h

Object Code: 26 6C 03
If Register D4h contains the value 5Fh , Register 5Fh contains the value
4Ch , the following statement leaves the value 4Ah in Register 5Fh , sets
the D flag, and clears the C, Z, S, V, and H flags:
SUB @D4h, #02h

Object Code: 27 D4 02