> | 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 working directory! Under MS-DOS or in a Windows DOS-Box simply type
>     ASEM DEMO
>     HEXBIN DEMO
> 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
>     asem demo.a51
>     hexbin demo.hex
> 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 8052.mcu! 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.