Tandy 600 Programmer's Reference Manual page 19

FUNCTION
02h
Display
Characters
on Console
AX
BX
CX
DX
SP:
BP:
SI:
Dl:
IP:
FLG
CS
DS
SS
ES
XXXXXXXX
XXXXXXXX
Entry:
AH =
02h
(function
code)
DL =
Character
to
be displayed
Exit:
None
Function
02h displays the character
in
DL
on
the
LCD
display
14