Remote Processing CAMBASIC - Manual (Page 93)

Comm ands - 60
INP
I/O Fu nction
SYNTAX: n = INP(I/O addre ss)
OUT I/O a ddress, data
PURPOSE: INP retur ns a byte from an I/O addre ss.
OUT writes a byte to an I/O addre ss.
REMARK S: I/O addre ss is in the range of 0 to 65,536 (&FF FF).
data is in the range of 0 to 255 (&FF).
INP and OUT are used to rea d and write to har dware de vices, such as digital I/O and coun ters.
INP is the comp lementar y function to the O UT sta tement.
WARNING: S o m e I / O ad d r es s a r e us e d i nt e rn a ll y a n d s h ou ld n ot be w r it te n to w it h t he O U T
statement. Gener ally, these are from &80 to &CF . See your har dware ma nual for
these addresses.
RELATED: BIT
EXAMPLE: 100 A = INP(255)
120 OUT &40,12
ERROR: < Data negative> – for I/O addre ss and data
< Illegal argument> – if I/O addre ss > 65,535
< Data > 255> – if data > 255