MKSYM Takes as input a map and generates a SYM file for use with GRDB
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generator generate manage map file input to file map file MAP file sizer SYM file generator generate SYM file map to SYM SYM file

MKSYM Description

The MKSYM program was developed to be a small tool that takes as input a map file from one of the DOS linkers and generates a SYM file for use with GRDB. The map file must be generated with appropriate switches so that publics will appear in it. The file format is a list of symbol records. Each record has the following format: - byte 1: 0 = no fixup, 1 = segment fixup - byte 2-3: offset of address - byte 4-5: reserved - byte 6-7: segment of address if byte 1 is 0, the segment will be loaded directly into the GRDB symbol table. If byte 1 is 1, the segment will be fixed up based on the relocation address. For EXE files the relocation address is PSP + 100h; for COM files the relocation address is the PSP. - byte 8: length of name 'n' - byte 9-9+n-1: name (no termination) GRDB stores this information internally in a similar format, except byte 1 is not stored and all values are stored in relocated fashion. If you save it from GRDB after making changes it will attempt to generate the unrelocated version again, but only values in the program's primary memory block will be unrelocated, everything else will be absolute.

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