Sharp MZ-80B User manual

Personal Computer
IIIZ·OOrnJU
OWNER'S MANUAL
SHARP

The MZ-808 Personal Computer supplied in the U.K. and Republic of Ireland
have 64k of RAM and optional graphic RAM-1 (MZ-80GM) fitted as standard.
Page 7 of the Owner's Manual shows various peripherals which can be connected
to the MZ- 808. The Mark Card Reader, Hard Disk, Colour Intelligent Terminal and
Colour Display are planned for future development.

SHARP
I
Personal Computer
MZ-808
Owner's Manual
january 1981
080211-150281
Printed in Japan
©SHARP CORPORATION

~---------------------IMPORTANT----------------------~
For users in the United Kingdom:
The wires in the power cable of this device are colored in accordance with the follow-
ing code:
BLUE Neutral
BROWN: Live
As the.colors
of the wires in the power cable of this device may not correspond with
the colored markings identifying
the terminals in your plug, proceed as follows:
• The blue colored wire must be connected to the terminal which is marked with the
letter N or colored black.
• The brown colored wire must be connected to the terminal which is marked with the
letter L or colored red.
ii

Preface
This manual describes the Sharp MZ-80B personal computer. Read this manual thoroughly to be-
come familiar with
the operating procedures and precautions before operating your MZ-80B. This
manual is one
of a series of publications describing the MZ-80B and associated software.
• Owner's Manual . .. This publication
• BASIC Language Manual
• MONITOR SB-1510 Reference Manual
Chapters 1 and 2 describe
the features of the MZ-80B and general operating procedures; read these
chapters first. Chapter 3 and 4 describe
the hardware. This information will be helpful to you if you
intend to expand system.
All software
is supplied in the form of files. A cassette tape which contains the SB-5 510 BASIC
interpreter and MONITOR SB-1510 (which support the standard BASIC programming language) is
included with the MZ-80B.
Refer
to the BASIC Language Manual for details on the BASIC language.
For details on MONITOR SB-151 0, refer to the MONITOR SB-151 0 Reference Manual.
Keep
the warranty card and list of service centers as well as this manual and the other two man-
uals.
iii

Precautions
The MZ-80B is one of the finest personal computers in the world; its design incorporates all the
technical knowledge accumulated by Sharp in its many years of experience in the electronics field. All
units are thoroughly inspected prior to shipment so
that each will operate normally when it is un-
packed. However, be sure to check visually
for any damage caused during transportation. If any
damage
is found or any parts are missing, contact your dealer immediately.
Observe
the following guidelines to keep your set in optimum operating condition:
• Do not place the MZ-80B in locations where the temperature is extremely high or low or where it
varies
to a great extent. Avoid exposing the unit to direct sunlight, vibration or dust.
• Handle the power cable carefully to prevent it from being damaged. When removing it from the
AC outlet, tum the power off first, then pull the plug (do not pull on the cable).
• If the power switch is turned off then immediately turned on again, initialization may not be per-
formed correctly. Allow a few moments
after turning the power off before turning it on.
For more detailed information, see Appendix 4.
iv

Contents
Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Chapter 1 The World of the MZ-808 Personal Computer ................ . 1
1.1 Features ................................................. . 2
1.1.1 Memory configuration
... . ............................ . 3
1.1.2 Superb operability
................................... . 4
1.2 Expansion equipments
......... . ...................... . .. . .. . 6
Chapter 2 Using the MZ-808 ....... ' ............................. . 9
2.1 Initial program loading ...................................... . 11
2.1.1 Activating system software contained in a cassette tape file .... . 11
2.1.2 Activating system software stored in a diskette file ........ .. . 12
2.1.3 Flow chart
oflnitial Program Loader .......... . .......... . 13
2.2 Keyboard .................. . .... .. ....................... . 15
2.2.1 Main keyboard ............................. .... ..... . 16
2.2.2 Numeric pad
.............. . ......................... . 21
2.2.3 Special function keys ... . . ....... ..................... . 22
2
.. 2.4 Cursor control keys ......... . ................. . ...... . 24
2.2.5 Cassette tape deck control keys
......................... . 25
2.3 Display
...... ..... ... ............ . ............... .. ...... . 26
2.3.1 Character display control system
.... ................... . . 26
2.3.2 Graphic display control system .
....... .... ............. . 29
Chapter 3 Option Device Installation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
31
3.1 Installation of optional devices in the main cabinet of MZ-80B ....... . 32
3.1.1
Im lling the Expansion RAM ..... . . ............ ... .... .
34
3.1.2 Installing the Graphic Memory 1 Card ................. .. .-. 35
3.1.3 Installing
the Expansion I/0 Port ......... .. ......... .. .. .
36
v
.!

3.2 Setting option device interface cards in the expansion 1/0 port . . . . . . . . 37
3.2.1 Setting
the Graphic Memory 2 Card . . . . . . . . . . . . . . . . . . . . . . . 37
3.2.2 Other interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Chapter 4 Hardware Configuration of the MZ-808 ..................... . 39
4.1 The MZ-80B system diagram . . .. . . ... . ......... . ........ . .... . 40
4.2 Memory configurations .......... .. ..... . .............. ... .. . 42
4.2.1 Memory map for initial program loading state
... . ...... . ... . 42
4.2.2 Memory map for normal state
............... . .......... . 43
4.2.3 Memory map for
V-RAM accessing state .... . ..... .. . . . . .. . 44
4.3 Signal system for the 8255 block, the 8253 block and the IPO block . . . 48
4.3.1 Signal system for
the 8255 block .. . : .................... . 49
4.3.2 Signal system for
the 8253 block ................ . . .. .... . 51
4.3.3 Signal system for the Z80A-PIO block ..... . .... . ......... . 52
4.4 The MZ-80B circuit diagrams . ....... . ..... . .......... . ....... . 56
APPENDIX ................................................... . 69
A.l Z80A-CPU technical data
...... . ................. . .. . ... . .... . 70
A.2 Z80A-PIO technical data ........................ . ....... . . . . . 108
A.3 Specifications ................. . . . .................. . ...... . 127
A.4 Caring for the system
............. . . .. . . ... . ... ...... ....... . 129
SUPPLEMENT Complete MZ-808 IPL Assembly Listing
vi
I '

Chapter 1·
The World of the MZ-808 Personal Computer
What can computers do? You will see that computers are used for many different purposes in
many places. Computers carry
out complicated scientific calculations, various business procedures,
simulations and statistical processing with the aid
of high /eve/languages such as BASIC, PASCAL,
FORTRAN and COBOL. Computers operate measuring systems and automatic control systems in a
variety
of plants andnetworks. In laboratories engaged in software development, the computer is even
used to
study itself.
What
can your MZ -80B do? There is no definite answer to this question, since the MZ-80B can be
usedin such a wide
range of applications. You may apply it to any purpose you wish.
Chapter 7
of this manual describes the features of the MZ-80B, hardware expansion and the scope
of the software.
1