Zilog Z86193 Manual do Utilizador descarregar pdf (Página 174)

CPU

User Manual

UM001604-0108 Instruction Description

167

Clear

Syntax

CLR dst

Instruction Format

Operation

dst ← 0

The destination operand is cleared to 00h.

Address modes R or IR can be used to specify a 4-bit Working Register. In this format, the

destination Working Register operand is specified by adding

1110b (Eh) to the high nibble

of the operand. For example, if Working Register R12 (CH) is the destination operand, then

ECh is used as the destination operand in the Op Code.

Example

If Working Register R6 contains AFh, the statement:

CLR R6

Op Code: B0 E6

leaves the value 00h in Working Register R6.

If Register

A5h contains the value 23h, and Register 23h contains the value FCh, the state-

ment:

CLR @A5h

Op Code: B1 A5

leaves the value 00h in Register 23h.

Cycles

OPC

(Hex)

Address

dst

OPC dst

6B0R

6B1IR

Flag Description

C Unaffected

Z Unaffected

S Unaffected

V Unaffected

D Unaffected

H Unaffected

Edst

Note:

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 259 260

Comentários a estes Manuais

Sem comentários

Zilog Z86193 Manual do Utilizador Página 174

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Zilog Z86193