Notes. 11/06/90. 1) (only SHAREWARE program) CSAD01 is a TSR which does not check if it is currently running. Only run CSAD01 once upon power up or reset. It is highly reccommended that you run this program from you autoexec.bat file. 11/08/90 1) CSAD02 SHAREWARE program detects if it is present. Note 1 above is now invalid. 2) CSAD02 SHAREWARE program now displays that it has loaded properly. CSAD02 uses multiplex int 2fh. Use int 2fh to determine if CSAD02 is present. Example mov ah,0e0h ;CSAD02 ID mov al,0 ;clear check. int 2fh ;execute multiplex cmp al,1 ;is CSAD02 present? jne not_present;no, exit ;CSAD02 is present. . . . . Notes End.