SGS Thomson Microelectronics ST6285-P-QFP, ST6285-EMU2, ST6280-P-QFP, ST6280-EMU2, ST6242B-EMU2 Datasheet
...
ST6xxx-EMU2
REAL TIME EMULATION DEVELOPMENT TOOLS
FOR ST6 MCU FAMILY
HARDWARE FEATURES
■
Supports ST62 and ST63 family
■
Real time emulation
■
32 KBytes of emulation memory
■
Breakpoint on a single address or on an address
area
■
Break events can be defined on Program Space,
Data space mixed with up to 4 external signals
■
2 full programmable output for synchronisation
■
Read/Write registers on the fly (without wait
state)
■
Selective trace in Range or Start/Stop
■
Break on Stack Overflow
■
1K of real trace memory
■
Tracing of up to 32 bits including 4 external
signals
SOFTWARE FEATURES
■
Symbolic debugger at source level
■
On-line assembler/disassembler
■
Log files capable of storing any displayed screen
■
Command files able to execute a set of debugger
commands
August 1998 1/4
This is advance information from STMicroelectronics. Details are subject to change without notice.
741
ST6xxx-EMU2
GENERAL DESCRIPTION
The ST6 Real Time Development System is an
advanced hardware development system designed and configured to provide comprehen sive
support for the ST6 family of MCU's.
This new mainframe consists of a basic part, common to all ST6 de vices, and one ST62 or ST63
subfamily dedicated board dep ending on the device to emulate. This new emulator is fully compatible with the existing dedicated boards, except for
the ST638X and ST631XX devices which have
been designed on two boards. Onl y the ded icated
board needs to be changed to emulate a ne w device within the ST62/ST63 subfamilies.
The debugger runs under the Microsoft Windows
environment. The use of a parallel port allows a
much faster communication transfer rate. The assembler source level debugger, software part of
the real time emulation too l, can be run on a PC,
and is common to all ST62 and ST63 devices. The
debugger is a native Windows applicat ion; it can
run under Windows 3.1x, W indows 95, Windows
NT (specific drivers NT are provided). Full context
sensitive on-line help is provided.
Once assembled, linked and debugged with the
simulator, the application software is ready to be
downloaded into the ST6-EMU. The device probe
is connected to t he appli cation hardware. The development station performs a real-time emulation
of the target device, th us allowing high performance testing and debugging of both application
hardware and software.
The breakpoints allow the user to stop the MCU
when the application software reaches selected
addresses, and/or addresses within a selected
ranges, and/or on data fetch (or read, or write, or
both) cycles. The user is then able to read and
modify any register and memory location. An online assembler/disassembler is also available to
ease debugging. The i nternal break signal is out put on OUT1 triggers on the front panel of the emulator. This feature enables the user to count
events using to external equipment, when optimising software for example, or to synchronise an oscilloscope when debugging hardware.
The debugger provides the same interface for both
simulator and emulator, allowing easy transition
from the software simula tion phase to the execution of the program in the target hardware with the
emulator.
The assembler sou rce level debugging capability
allows program execution to be viewed in the
source file written by the user. Mous e click functions are context sensitive. Depending on t he program element select ed, different actions are performed such as viewing a subroutine or variable.
In addition, the ST6-EMU2 architecture allows to
read ST6 registers while the user program is running: such possibility is offered without any di s tur-
™
bance in the user program execution. K nown as
“Read on the Fly” feature, it a llows to follow the
modification of a system variable during execution.
Moreover, modification of the registers contents is
possible in the same conditions, without disturbing
the execution of the program.
The logical analyser permanently records in real
time on 32 bits: buses, flags, Bank registers and 4
external signals. It allows the user to di splay the
last 1024 executed cycles. The displayed cycles
are, either fetch, or fetch and data space accesses, chosen by a debugger comm and. Addresses,
data, control/status bits and 4 user signals are displayed using mnemonic and user symbols. Log
files offer the possibility to send any screen display
to a text file. In particular, log files are very useful
to save the contents of the logic analyser and/ or
the contents of data registers to be analysed or
printed.
Command files can be used to execute a set of debugger commands in order to ease and speed up
the emulation session.
A powerful help facility can be involved at any time
to give additional information about the commands, the processor or the emulator.
A powerful hardware test allows to verify the good
behaviour of the system.
When the program is fully debugged, the ST6
EPROM remote pro gramming boa rd can be used
to program the emulation device with the INTEL
hex format file produced by the linker.
2/4
742
Loading...