Zilog Z86193 - Manual (Page 250)

Z8
®
CPU
User Manual
UM001604-0108 Instruction Description
243
Example 1
If Working Register R3 contains
45h
(
01000101b
) and Working Register R7 contains the
value
01h
(
00000001b
) (bit 0 is being tested if it is 1), the statement:
TCM R3, R7
Op Code: 62 37
sets the Z Flag indicating bit 0 in the destination operand is 1. The V and S Flags are
cleared.
Example 2
If Working Register R14 contains the value
F3h
(
11110011b
), Working Register R5 con-
tains
CBh
, and Register
CBh
contains
88h
(
10001000b
) (bit 7 and bit 3 are being tested if
they are 1), the statement:
TCM R14, @R5
Op Code: 63 E5
resets the Z Flag, because bit 3 in the destination operand is not a 1. The V and S Flags are
also cleared.
Example 3
If Register
D4h
contains the value
04h
(
000001000b
), and Working Register R0 contains
the value
80h
(
10000000b
) (bit 7 is being tested if it is 1), the statement:
TCM D4h, R0
Op Code: 64 E0 D4
resets the Z Flag, because bit 7 in the destination operand is not a 1. The S Flag is set, and
the V Flag is cleared.
Example 4
If Register
DFh
contains the value
FFh
(
11111111b
), Register
07h
contains the value
1Fh
, and Register
1Fh
contains the value
BDh
(
10111101b
) (bit 7, bit 5, bit 4, bit 3, bit 2,
and bit 0 are being tested if they are 1), the statement:
TCM DFh, @07h
Op Code: 65 07 DF
sets the Z Flag indicating the tested bits in the destination operand are 1. The S and V
Flags are cleared.
Example 5
If Working Register R13 contains the value
F2h
(
11110010b
), the statement:
TCM R13, #02h
Op Code: 66 ED, 02