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Assembler Output

The assembly process results in two files:

- Code file (.bin)            : Executable (binary) code.
- Listing file (.lst)      : As built (ASCII) listing of source with numeric
                             addresses and error messages if any as well as
                             extra info such as the Symbols Table.

The assembler creates their filenames from the source filename by replacing the file extension with .lst and .bin respectively.

The code file (.bin) is built acording to one of the following formats (indicated in code by the directive #format FORMAT):

- H10 : Exact image of code in memory using relative branch instructions only.
- H11 : Monolithic code with header specifying the ORG address.
- H12 : Fragmented code with header specifying different ORG addresses.
- H13 : Relocatable code with header indicating words (off-sets) in need
        for relocation.

These different formats are targeted to different operational environment that the target computer may offer. At early stage of development, no operational environment exists so formats H10 and H11 are the most appropriate. Format H12 is useful for full memory dumping including vectors (such as in Listing #1). Format H13 is better suited for applications in presence of a Loader capable of relocation.

If #format H10 is specified, the Assembler will translate absolute branch instructions to relative ones, automatically. If the directive is missing, format H12 will be assumed.