II.3 The DEMO Program
For getting started with a new assembler, it is always helpful to have
a program that can be assembled with it. For this purpose, the 8051
assembler program DEMO.A51 is provided, which
can be used for a first test of the ASEM-51 installation.
For this, you should either have installed ASEM-51 as described
above, or keep all files of the ASEM-51 package directly in your
Under MS-DOS or in a Windows DOS-Box simply type
at the DOS prompt. ASEM and HEXBIN should finish without errors and you
should have the following new files on your disk:
DEMO.HEX Intel-HEX file
DEMO.LST assembler list file of DEMO.A51
DEMO.BIN binary image file of DEMO.HEX
Under Linux type
Again asem and hexbin should finish without errors and you should have
the following new files on your disk:
demo.hex Intel-HEX file
demo.lst assembler list file of demo.a51
demo.bin binary image file of demo.hex
If something goes wrong, either ASEM-51 is not properly
installed, there may be files missing in your distribution, or the
assembler simply cannot find the include file
demo.a51 may also serve as a sample assembler program that
includes examples for (nearly) all machine instructions, pseudo instructions,
assembler controls, and meta instructions that have been implemented in
ASEM-51. Whenever in doubt how to use a particular command,
demo.a51 may be a valuable help.
Unlike other assemblers, the ASEM-51
list file is no alibi feature!
It is really instructive to compare the original source to the generated
code in the listing.