Tandy 1000 - Page 303

Basic
PEEK(memory loeation)
Returns a byte from memory location. Memory location must be in
the range -32768 to 65535. The value returned is an integer in the
range
0 to 255.
A = PEEK (&H5A00>
PE N(number)
Returns the light pen’s coordinates.
Number is a number in the range 1 to 9 that tells BASIC what to
return.
0
1
2
7
8
9
Returns a -1 if pen button has been pressed since last poll.
Returns a 0 if not.
Returns the
x coordinate (horizontal) where the pen was last
activated.
Returns the y coordinate (vertical) where the pen was last
activated.
Returns a
-1 if the pen button is pressed. Returns a 0 if it not.
Returns the last known valid x coordinate (horizontal).
Returns the last known valid y coordinate (vertical).
Returns the character row position where the pen was last
activated.
Returns the character column position where the pen was last
activated.
Returns the last known character row position.
Returns the last known character column position.
A = PEN(1)
PEN action
Turns on, turns off, or temporarily halts light pen event trapping.
PEN
ON enables event trapping.
PEN OFF disables event trapping.
PEN STOP temporarily suspends event trapping.
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Tandy 1000