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Section B:
Hardware interface
************************************************************************
*
*
*
18 - Check Auxiliary Device Input State
*
*
*
************************************************************************
On entry:
On exit :
AL
=
0' or 0'FFH
All
input
devices mapped to the auxiliary device input channel
AUXIN:
are interrogated.
If at least one of them is ready to be read,
A and L
are set to 0'FFH, if not so, zero values are returned.
Example:
\
LIT
C,50'
EOS
function code
LD
DE,PARAMS
Parameters
CALL
5
Call
EOS
to execute function
OR
A
Check state
JP
NZ,READY
non-zero means ready
PARAMS:
DB
18
Hardware function No.
DB
0
ow
0
ow
0
ow
0
EOS System manual
Daeumling & Zimmermann
Page 154
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