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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- Interactive Operation --><HTML><HEAD><TITLE>Interactive Operation</TITLE><META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1"></HEAD><BODY BACKGROUND="spiral.gif" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#990099" ALINK="#FF0000"><TABLE WIDTH="98%"><TR><TD WIDTH=60 VALIGN=BOTTOM NOWRAP><IMG SRC="transp.gif" ALT="" WIDTH=60 HEIGHT=20></TD><TD><!-- Ab hier Seitentext: --><P><BIG><BR><STRONG><U>III.1 Interactive Operation</U></STRONG></BIG></P><P><BIG><NOBR>BOOT-51</NOBR> implements a simple ASCII user interface for serialcommunication. The bootstrap program can be operated interactively with aterminal emulation program running on the PC (<NOBR>e.g.</NOBR> <STRONG>TELIX</STRONG>under <NOBR>MS-DOS</NOBR>, or <STRONG>minicom</STRONG> under Linux).To perform this, start your terminal emulation program, and configure it forthe correct baudrate, <NOBR>8 data</NOBR> bits, <NOBR>1 stop</NOBR> bit,no parity, and no handshake.Then reset the <NOBR>MCS-51</NOBR> target system.<BR>(If you have established an <NOBR>RS-232</NOBR> reset line, the target systemcan usually be reset by dropping the <NOBR>RS-232</NOBR> DTR output with the"hang-up" function!)Now the <NOBR>BOOT-51</NOBR> sign-on message should appear on your screen:</BIG></P><P><BIG><BLOCKQUOTE><CODE>BOOT-51 V1.1 Copyright (c) 2002 by W.W. Heinz<BR><BR>></CODE></BLOCKQUOTE></BIG></P><P><BIG>The '>' character indicates that the <NOBR>BOOT-51</NOBR> command lineinterpreter is ready for input. It implements exactly two commands:</BIG></P><P><BIG><OL TYPE=1><LI>The UPLOAD command:<BR> First press the 'U', and then the return key.<BR> Now the upload prompt ':' should be displayed. <NOBR>BOOT-51</NOBR> is now ready to receive an application program in Intel-HEX format. Send an Intel-HEX file with the ASCII upload function of your terminal emulation program. (Be sure that it terminates every line with a CR and/or LF character!) Now the received Intel-HEX records are loaded to their start addresses specified in the record headers. If an EOF record is received, the upload is terminated and the command prompt '>' is displayed again. Now the command line interpreter is ready for the next command.<BR> When a format error is detected in the Intel-HEX file, <NOBR>BOOT-51</NOBR> waits until no more characters are received for about two seconds, and then aborts with a corresponding error message. (see <A HREF="bappendc.htm">Appendix C</A>)<BR> </LI><LI>The GO TO command:<BR> To start an application program at address 8000H, enter <NOBR>"G 8000"</NOBR> and press return. <NOBR>BOOT-51</NOBR> sets now all MCU registers to reset conditions (as far as possible), and jumps to the start address specified. Now the previously loaded application program should be running!</LI></OL></BIG></P><P><BIG>Any desired number of Intel-HEX files may be loaded, before entering the'G' command. The commands may be entered in upper or lower case letters.Interactive operation should be preferred, if the application programperforms serial I/O. This can easily be supervised with the terminalemulation program. In interactive mode, only an <NOBR>RS-232</NOBR> resetoutput is applicable. (A printer port reset cable would be of little use!)</BIG></P><!-- Seitentext Ende --><P><BR><BR><CENTER><TABLE WIDTH="70%"><TR><TH><A HREF="boot51.htm"><IMG SRC="home.gif" ALT="[contents]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="boperat.htm"><IMG SRC="up.gif" ALT="[up]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="boperat.htm"><IMG SRC="back.gif" ALT="[back]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH> <TH><A HREF="bbatch.htm"><IMG SRC="next.gif" ALT="[next]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH></TR></TABLE></CENTER></P></TD></TR></TABLE></BODY></HTML>⌨️ 快捷键说明
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