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Z8S180000ZEM
CP951800100
HARDWARE FEATURES
CUSTOMER PROCUREMENT SPECIFICATION
CP951800101 (10/95)
■Simple Emulator Environment for Z8S180-Based
Design and Development
■Development Platform for Specific Application Trial
Implementation
■Stand-Alone Unit Configuration Option
■Supported Packages
Packages Emulation
68-Pin PLCC Z8S180
■Effective Learning Tool for Students of Z80® and
Z180™ Architectures
GENERAL DESCRIPTION
The Z8S180 Emulator (Z8S180000ZEM) provides the
hardware, software, and documentation necessary to
evaluate, design, and begin development using the Z8S180
Microprocessor Unit (MPU).
The purpose of the Z8S180 Emulator is to provide a
learning environment for students of the Z80 and Z180
architectures and also to provide a cost-effective emulator
for Z8S180-design related activities.
The kit includes a monitor program (in EPROM) that can be
used with a dumb terminal and a software program (TZ.EXE)
that provides terminal emulation facilities for a PC. The
monitor program provides useful capabilities including
downloading and running programs with or without
breakpoints, displaying and filling memory locations,
comparing contents of memory and reading/writing from
the I/O ports. A board schematic is also included.
The Z8S180 emulator is engineered to provide the best
balance between reasonable cost and useful features to
shorten development time for products using the Z8S180.
The Z8S180 emulator, based on the Z8S180 MPU, provides
an excellent environment for hardware and software
development.
Z8S180000ZEM
Z8S180™ EMULATOR
SPECIFICATIONS
Operating Conditions
Operating Temperature: 20°C, ±10°C
Operating Humidity: 10-90% RH (Non-Condensing)
Oscillator Frequency: 18.432 MHz
Power Requirements
Supply Voltage: +5 VDC ± 5%
Supply Current: Less than 1A
Dimensions
Width: 4.2 in.
Length: 4.2 in.
Serial Interface
RS-232C (EIA 232)
(Data Rates: 1,200 to 57,600 Bits/sec.)
Minimum Hardware Requirements
Dumb Terminal and Power Supply (or)
386-Based Machine at 20 MHz and Power Supply
VGA Video Adapter
4 MB RAM
Hard Disk Drive (1 MB Free Space)
High-Density (HD) Floppy Disk Drive (3.5-Inch)
Minimum Software Requirements
MS-DOS V5.0
Z8S180000ZEM
CP951800100
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KIT CONTENTS
Z8S180000ZEM Emulator
Main Board Assembly Includes:
Z8S180™ MPU
18.432 MHz Crystal
8K x 8 Static RAM
8K x 8 EPROM - 2764
(contains Debug Monitor Program)
Altera FPGA (controls Emulation and ROM and RAM
Decoding)
RS-232C Line Drivers and Receivers
Test Points Surrounding the Z8S180 Location
(for all MPU signals)
Reset and NMI Buttons
Cables/Pods
68-Pin PLCC Emulation Adapter
Software (IBM PC Platform)
Z8S180 Main Diskette
ZASM-Cross Assembler/MOBJ-Object Utility Diskette
Documentation
Z8S180 Emulator User's Manual
Z180™ Family Databook
Z180 User's Manual
ASM800, Z800 Cross Assembler User's Guide
Zilog Universal Object File Utilities User's Guide
Z80® Microprocessor Family User's Manual
Registration Card
PRECAUTIONS
Target Design
/MREQ
In order for the Z8S180 emulator to emulate the processor
in a target board, the target board must enable its memories
only when the /MREQ signal is low. The target board may
include /MREQ in a /CS signal, or in /OE and /WE signals,
of its memories.
The Z8S180 emulator avoids conflicts with target resources
during cycles that access its ROM or RAM by blocking the
/MREQ signal to the target board.
Clocking
A crystal or oscillator on the target board is not used by the
Z8S180 emulator. In order to use a different clock rate than
the standard 18.432 MHz, the following steps must be
taken:
1. A different crystal, of the desired frequency, must be
plugged into the crystal socket on the Z8S180 emulator.
2. The symbol “clockHz” in the Debug Monitor source
(included with the emulator) must be changed to the
new value.
3. The MAKE.BAT file, assembler, and object utilities
included with the emulator must be used to assemble
the source and create a hex file.
4. A corresponding new EPROM must be programmed
and installed in the U2 socket.
Note: Steps 2–4 can be avoided if the new frequency is a
simple multiple or divisor of the old. Just start the TZ
program at whatever serial rate the new crystal plus the old
EPROM result in. (Refer to Chapter 3, “Using the Debug
Monitor.”)
Execution
While running a program in User Mode, execution of an
instruction starting at any of the following addresses makes
the emulator enter Monitor Mode:
Address Significance
00000 Reset, illegal instruction trap, RST 0, or
jumping to a Null pointer.
00020 RST 20 instruction, used to provide
services to user program.
00028 RST 28 instruction, used for breakpoints.
00066 Non-Maskable Interrupt.
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Z8S180000ZEM
CP951800100
Zilog’s products are not authorized for use as critical compo-
nents in life support devices or systems unless a specific written
agreement pertaining to such intended use is executed between
the customer and Zilog prior to use. Life support devices or
systems are those which are intended for surgical implantation
into the body, or which sustains life whose failure to perform,
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to result in
significant injury to the user.
Zilog, Inc. 210 East Hacienda Ave.
Campbell, CA 95008-6600
Telephone (408) 370-8000
Telex 910-338-7621
FAX 408 370-8056
Internet: http://www.zilog.com
© 1995 by Zilog, Inc. All rights reserved. No part of this document
may be copied or reproduced in any form or by any means
without the prior written consent of Zilog, Inc. The information in
this document is subject to change without notice. Devices sold
by Zilog, Inc. are covered by warranty and patent indemnification
provisions appearing in Zilog, Inc. Terms and Conditions of Sale
only. Zilog, Inc. makes no warranty, express, statutory, implied or
by description, regarding the information set forth herein or
regarding the freedom of the described devices from intellectual
property infringement. Zilog, Inc. makes no warranty of mer-
chantability or fitness for any purpose. Zilog, Inc. shall not be
responsible for any errors that may appear in this document.
Zilog, Inc. makes no commitment to update or keep current the
information contained in this document.
PRECAUTIONS (Continued)
User programs can easily work around the first problem by
including a NOP at 00000, and starting execution under
the Debug Monitor at 00001.
There are five other RST instructions that applications can
use.
For user programs intended for eventual stand-alone use,
that is, for operation without the Debug Monitor, debugging
of the user’s NMI routine must wait for final system
integration, when the emulator is no longer plugged into
the target board.
Last 256 Bytes of Emulator RAM Protected
The Z8S180 Emulator includes 8 KB of RAM that you can
locate at various 8 KB address boundaries, or optionally
eliminate from the user memory map. When you do include
this RAM, its last 256 bytes are protected/hidden from
access by your software and by monitor commands to
protect the monitor’s internal states, variables, and tables.
