Zilog Z08470 - Manual (Page 293)

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