april 1998 1/4 ST72XX-EMUX / st7mdtx-emu2 real-time development tools for the st7 mcu family features n a common hardware development system mainframe supports the entire st72xx family of mcus, in conjunction with the appropriate st7xxx-dbe dedication board emulator. n real-time source level emulation, allows viewing and breakpoint setting on high level source code rather than on disassembled target code, for optimum user friendliness. n 64 kbytes of user modifiable and configurable emulation ram, allows memory mapping of all st72 family devices as well as modelling hypothetical memory configurations. n unlimited breakpoints may be set for any op- code fetch or any address access, and conditions may be defined for the generation of 2 external synchronisation signals. n 1k by 32-bit wide trace memory for logic analyser allows complex and sequential events to be defined on any combination of address and data, as well as 3 internal and 5 external logic signals. n logic analyser events may trigger a breakpoint or simply define data capture parameters, in accordance with user preferences. n simple connection of emulator system to host pc via rs-232 serial channel or via parrallel port 1) n emulation system may be driven by windows based gnu debugger software or dos software running on host pc, allowing full control and monitoring of hardware resources. n multiple windows allow concurrent real-time display of source code, mcu resources, internal registers, trace data, etc. n log files allow storage and subsequent redisplay of any displayed screen for subsequent analysis. n command files can be used to execute a set of debugger commands in batch mode. n editable configuration files ensure tailoring of working environment to user preferences. note 1. on the st72-emu2 version of the emulator.. 123
2/4 ST72XX-EMUX / st7mdtx-emu2 overview the st7 real-time development tools consist of various hardware and software components, which together form a flexible and sophisticated system designed to provide comprehensive devel- opment support for the st7 family of mcus. the hardware development system (hds) main- frame is common to all st7 devices and, in con- junction with various dedication board emulators (dbe), allows emulation and development of spe- cific devices. only the dbe and probe need to be changed to emulate a new st72 family device. the development system is controlled by a host pc on which a choice of windows based software may be run. the host pc is simply connected to the emulator mainframe by means of an rs-232 serial link or a parallel port. the wgdb7 windows gnu debugger software suite is supplied as standard issue with the emulator hardware, in ad- dition to the conventional dos st7 software suite, which includes a macroassembler, a link- er/loader. third party c toolchain and debugger software is also available. the windows based debugger provides a user friendly and highly flexi- ble interface which may be configured to precisely match the users requirements. all emulator set- tings are accessible via the control software. once assembled, and/or compiled and linked, the application software may be downloaded to the real-time emulation memory, which can be config- ured, mapped and modified as required by the us- er. the device probe is then connected to the ap- plication target hardware in place of the mcu and real-time emulation of the target application can begin, thus allowing sophisticated testing and de- bugging of both application hardware and soft- ware. user definable breakpoints allow the mcu to be halted when the application software accesses specific addresses, and/or addresses within a se- lected range, and/or on data fetch cycles. the user may then read and modify any register and memory location. an on line assembler/disassem- bler is also available to ease debugging. an important feature of the st7 development sys- tem is that true source level debugging is possible, meaning code may be viewed at source level and breakpoints may be set on high level code, rather than on disassembled target code. this is much more meaningful to the user and ensures a more convivial and productive development environ- ment. a separate and concurrent logic analyser func- tion is available. this hardware implemented func- tion features 1kbyte of 32-bit wide trace memory which allows events to be defined for any combi- nation of address (16 bits) and data (8 bits), as well as according to the state of 3 internal and 5 external logic signals. complex and sequential conditions may be defined, and all bits are maska- ble. the external signals are input from 5 probes which can be connected to the target hardware. trace memory events may be used as break- points or simply to trigger data acquisition accord- ing to user specified parameters, without halting the target system. such a powerful tool enables the user to detect and trap virtually any pattern, and thus rapidly debug the target application. log files offer the ability to send any screen dis- play 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 subse- quently analysed or printed. command files can be used to execute a set of debugger commands in batch mode, to simplify and speed up the emulation session. finally, when the target program is fully de- bugged, the appropriate st7 eprom/otp pro- gramming board can be used to program the eprom/otp version of the target device to allow stand-alone testing and evaluation. 123
3/4 ST72XX-EMUX / st7mdtx-emu2 ordering information device package emulator dedication board st72e50/t50 qfp64 st7250-emu2 st72e72/t72 csdip56 st7272-emu st7272-dbe st72e77/t77 so34/qfp64/sdip42/sdip56 st7277-emu2 st72e85/t85 qfp80 st7285-emu st7285-dbe st72e91l6/t91l6 so28/dip28 st7291l6-emu st7291l6-dbe st72e94/t94 so28/dip28 st7294-emu st7294-dbe st72e101 sdip32/so28 st7mdt1-emu2 st72e21x sdip32/so28 st7mdt1-emu2 st72e251 sdip32/so28 st7mdt1-emu2 st72e121 sdip42/tqfp44 st7mdt2-emu2 st72e311 sdip42/tqfp44/sdip56/tqfp64 st7mdt2-emu2 st72e331 sdip42/tqfp44/sdip56/tqfp64 st7mdt2-emu2 st72e272 sdip32/so34 st7mdt4-emu2 st72e37x sdip42/tqfp44/sdip56/tqfp64 st7mdt4-emu2 st72e671 sdip56/tqfp64 st7mdt4-emu2 123
4/4 ST72XX-EMUX / st7mdtx-emu2 notes: information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without the express written approval of stmicroele ctronics. the st logo is a trademark of stmicroelectronics ? 1998 stmicroelectronics - all rights reserved. purchase of i 2 c components by stmicroelectronics conveys a license under the philips i 2 c patent. rights to use these components in an i 2 c system is granted provided that the system conforms to the i 2 c standard specification as defined by philips. stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco - the neth erlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. 123
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