Function 26h Create New Program Segment Prefix (PSP) This service copies the current program-segment prefix to a new memory location for the creation of a new program or overlay. Once the new PSP is in place, a DOS program can read a DOS COM or overlay file into the memory location immediately following the new PSP and pass control to it. entry AH 26h DX segment number for the new PSP return none note 1) Microsoft recommends you use the newer DOS service 4Bh (EXEC) instead. 2) The entire 100h area at location 0 in the current PSP is copied into location 0 of the new PSP. The memory size information at location 6 in the new segment is updated and the current termination, ctrl-break, and critical error addresses from interrupt vector table entries for ints 22h, 23h, and 24 are saved in the new program segment starting at 0Ah. They are restored from this area when the program terminates. 3) Current PSP is copied to specified segment
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<A HREF="http://www.massmind.org/techref/INT/21f/26.htm"> INT 21f 26</A>
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