Zilog Z08470 Uživatelský manuál stáhnout pdf (Strana 293)

100

101

UM008007-0715 Z80 Instruction Description

Z80 CPU

User Manual

281

If cc is true:

If cc is false:

Condition Bits Affected

None.

Example

The C Flag in the F Register is reset, the Program Counter contains 1A47h, the Stack

Pointer contains

3002h, and memory locations contain the following data.

If an instruction fetch sequence begins, the 3-byte instruction

D43521h is fetched to the

CPU for execution. The mnemonic equivalent of this instruction is CALL NC,

2135h.

Upon the execution of this instruction, memory address

3001h contains 1Ah, address

3000h contains 4Ah, the Stack Pointer contains 3000h, and the Program Counter contains

2135h, thereby pointing to the address of the first op code of the next subroutine to be

executed.

cc Condition

Relevant

Flag

000 Non-Zero (NZ) Z

001 Zero (Z) Z

010 Non Carry (NC) C

011 Carry (C) Z

100 Parity Odd (PO) P/V

101 Parity Even (PE) P/V

110 Sign Positive (P) S

111 Sign Negative (M) S

M Cycles T States 4 MHz E.T.

5 17 (4, 3, 4, 3, 3) 4.25

M Cycles T States 4 MHz E.T.

3 10 (4, 3, 3) 2.50

Location Contents

1A47h D4h

1448h 35h

1A49h 21h

1 2 ... 288 289 290 291 292 293 294 295 296 297 298 ... 325 326

Komentáře k této Příručce

Žádné komentáře

Zilog Z08470 Uživatelský manuál Strana 293

Komentáře k této Příručce

Související produkty a manuály pro Senzory Zilog Z08470