Computadoras
Páginas: 40 (9776 palabras)
Publicado: 10 de mayo de 2012
Z80 Family CPU User Manual
User Manual
UM008005-0205
ZiLOG Worldwide Headquarters • 532 Race Street • San Jose, CA 95126-3432 Telephone: 408.558.8500 • Fax: 408.558.8300 • www.ZiLOG.com
Z80 CPU User’s Manual
This publication is subject to replacement by a later edition. To determine whether a later edition exists, or to request copies of publications, contact:
ZiLOG WorldwideHeadquarters 532 Race Street San Jose, CA 95126-3432 Telephone: 408.558.8500 Fax: 408.558.8300 www.ZiLOG.com
Document Disclaimer
ZiLOG is a registered trademark of ZiLOG Inc. in the United States and in other countries. All other products and/or service names mentioned herein may be trademarks of the companies with which they are associated. ©2004 by ZiLOG, Inc. All rights reserved. Information inthis publication concerning the devices, applications, or technology described is intended to suggest possible uses and may be superseded. ZiLOG, INC. DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZiLOG ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY INFRINGEMENT RELATED IN ANY MANNER TO USE OFINFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Except with the express written approval of ZiLOG, use of information, devices, or technology as critical components of life support systems is not authorized. No licenses are conveyed, implicitly or otherwise, by this document under any intellectual property rights.
UM008005-0205
Z80 CPU User’s Manual
iii
RevisionHistory
Each instance in Table 1 reflects a change to this document from its previous revision. To see more detail, click the appropriate link in the table.
Table 1. Revision History of this Document Revision Level Section
Date
Description
Page # 176,177, 178
December 04 2004
Z80 Instruction Corrected discrepancies in the bit Set patterns for IM 0, IM 1 and IM 2 instructions. Z80Instruction Set, CPU Instruction Description Corrected illustration for the Rotate and Shift Group RLCA instruction. Also corrected the hex code for the RLCA instruction on page 63.
February 2005
05
190, 63
Chapter Title
UM008005-0205
Z80 CPU User’s Manual iv
UM008005-0205
PRELIMINARY DRAFT v1.0
Chapter Title
Z80 CPU User’s Manual
v
Table of Contents
RevisionHistory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Arithmetic LogicUnit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Instruction Register and CPU Control . . . . . . . . . . . . . . . . . . . . . . 6 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin Functions . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .7 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Instruction Fetch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Memory Read Or Write . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .13 Input or Output Cycles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Bus Request/Acknowledge Cycle . . . . . . . . . . . . . . . . . . . . . . . . .15 Interrupt Request/Acknowledge Cycle . . . . . . . . . . . . . . . . . . . . .16 Non-Maskable Interrupt Response . . . . . . . . . . . . . . . . . . . . . . . .17 HALT Exit . . . . . ....
User Manual
UM008005-0205
ZiLOG Worldwide Headquarters • 532 Race Street • San Jose, CA 95126-3432 Telephone: 408.558.8500 • Fax: 408.558.8300 • www.ZiLOG.com
Z80 CPU User’s Manual
This publication is subject to replacement by a later edition. To determine whether a later edition exists, or to request copies of publications, contact:
ZiLOG WorldwideHeadquarters 532 Race Street San Jose, CA 95126-3432 Telephone: 408.558.8500 Fax: 408.558.8300 www.ZiLOG.com
Document Disclaimer
ZiLOG is a registered trademark of ZiLOG Inc. in the United States and in other countries. All other products and/or service names mentioned herein may be trademarks of the companies with which they are associated. ©2004 by ZiLOG, Inc. All rights reserved. Information inthis publication concerning the devices, applications, or technology described is intended to suggest possible uses and may be superseded. ZiLOG, INC. DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY OF THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS DOCUMENT. ZiLOG ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY INFRINGEMENT RELATED IN ANY MANNER TO USE OFINFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Except with the express written approval of ZiLOG, use of information, devices, or technology as critical components of life support systems is not authorized. No licenses are conveyed, implicitly or otherwise, by this document under any intellectual property rights.
UM008005-0205
Z80 CPU User’s Manual
iii
RevisionHistory
Each instance in Table 1 reflects a change to this document from its previous revision. To see more detail, click the appropriate link in the table.
Table 1. Revision History of this Document Revision Level Section
Date
Description
Page # 176,177, 178
December 04 2004
Z80 Instruction Corrected discrepancies in the bit Set patterns for IM 0, IM 1 and IM 2 instructions. Z80Instruction Set, CPU Instruction Description Corrected illustration for the Rotate and Shift Group RLCA instruction. Also corrected the hex code for the RLCA instruction on page 63.
February 2005
05
190, 63
Chapter Title
UM008005-0205
Z80 CPU User’s Manual iv
UM008005-0205
PRELIMINARY DRAFT v1.0
Chapter Title
Z80 CPU User’s Manual
v
Table of Contents
RevisionHistory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 CPU Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Arithmetic LogicUnit (ALU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Instruction Register and CPU Control . . . . . . . . . . . . . . . . . . . . . . 6 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin Functions . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .7 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Instruction Fetch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Memory Read Or Write . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .13 Input or Output Cycles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Bus Request/Acknowledge Cycle . . . . . . . . . . . . . . . . . . . . . . . . .15 Interrupt Request/Acknowledge Cycle . . . . . . . . . . . . . . . . . . . . .16 Non-Maskable Interrupt Response . . . . . . . . . . . . . . . . . . . . . . . .17 HALT Exit . . . . . ....
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