Owner`s manual

63
INP@ (input)
Inputs data at 110 ports to variables.
Format:
INP@ <port number>, <variable>
Abbreviated form:
I.@
Explanation:
• Inputs 8-bit data from <port number> input port and sets to <variable> the value
(0 - 255) converted to a decimal number .
• From 0 to 127 ($00 - $7F in hexadecimal), the <port number> can be determined
freely. From
128 to 255 ($FO - $80 in hexadecimal), the use is exclusively as ports
for external devices.
Example:
1 0
FOR
I =0
TO 20
20 C =1 +32
30
GOSUB
"SUB"
40 NEXT
50
END
60
LABEL "SUB"
70
I NP@ $FE, A
80 I F NOT
(A
AND
$OD) =0 THEN 70
90
OUT@ $FF,C
100
OUT@ $FE, $80
1 1 0
I
NP@ $FE, A
120
I F NOT
(A
AND
$ 0 D) =1 THE N 1 1 0
130
OUT@ FE, 0
140 RETURN
Reference:
OUT@ (page 64)