◄Contents►  ◄Flags Summary►  ◄Registers Summary►  ◄Register Setup►
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When DOS loads an EXE program, it sets registers as follows:
 
ES        Points to segment of Program Segment Prefix (PSP)
DS        Points to segment of PSP
CS:IP     Points to CS:IP address in EXE header
SS:SP     Points to SS:SP address in EXE header
 
When DOS loads a COM program, it sets all segment registers to the
beginning of the program, and IP to 100H.
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