Tandy 600 Programmer's Reference Manual page 78

FUNCTION E5h
-
Touch Panel
Support
AX
BX
cx
DX
SP:
BP:
SI:
Dl:
IP:
FLG
CS
OS
ss
ES
i
i
f~
-••••
i
I
:
*
!
Entry
_4
Exit;
Error returns:
73