INT 21,4C - Terminate Process With Return Code

AH = 4C

AL = return code (for batch files)

returns nothing

- approved method of program termination

- restores the terminate, ~Ctrl-Break~, and critical error exit

addresses, flushes all buffers, frees memory and returns to

DOS via the termination handler address

- does not close FCBs

- this function is not supported in versions of DOS before 2.x,

so use ~INT 21,0~ or ~INT 20~ to exit.

- see also ~INT 27~ ~INT 21,31~