Radio Shack TRS-80 Model 3 - Page 79

Sample Z-80 Programming
See$OELAY.
SampleBASIC Programming
10 Pro<E 16526,105: POKE 16527,0
:?Q) X ::: USR(Q)
$KBCHAR---43/X'002B'
., L.SB/1'1SB
., DUMMY ARGUMEI\! r
Geta Keyboard Character if Available
This subroutine checks the keyboard for a character. The character (if any) is not
displayed.
Entry Conditions
None
ExitConditions
A=ASCII Character. IF A=O, no character was available.
DE is altered.
Sample Z-80 Programming
See $RSINIT.
12/11