INT 21,55 - Create New PSP (Undocumented)

AH = 55h

DX = New PSP segment address

SI = memory size value to place in ~PSP~ offset 02h (DOS 3+)

returns nothing

- the following should be observed when using this function

o Allocate memory for the PSP and program code (~INT 21,48~)

o Duplicate the PSP (~INT 21,55~)

o Load program code into allocated segment above the new PSP

o Save Current PSP

o Set PSP to the PSP just created (~INT 21,50~)

o Jump to start of code if .COM otherwise handle relocation,

setup stack and registers

- similar to ~INT 21,26~ except the PSP is setup by DOS

- increments reference count in ~SFT~ for all inherited files

- files flagged as not inheritable are marked as closed in the

new PSP

- invoked by ~INT 21,4B~

- see ~UNDOC~ ~INT 21,4B~ ~INT 21,26~