INT 21,26 - Create New Program Segment Prefix

AH = 26h

DX = segment address of new ~PSP~

returns nothing

- allocates memory for a PSP and copies current PSP there

- used before DOS 2.x to spawn a child process

- the application is responsible for allocating any memory

necessary for the child process

- ~INT 21,4B~ (EXEC) is now the recommended method for starting

a child process, so this function should be avoided

- see also ~INT 21,55~