Zilog Z86193 Manual de usuario descargar pdf (Pagina 250)

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

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Zilog Z86193 Manual de usuario Pagina 250