> You can avoid cryptic language constructs in the main source code. > > I did not yet use the preprocessor in Pascal but a standard way to > access memory mapped ports in C is something like this (from the top of > my head): > > #define _port = 0x87
const _port=$87; > #define ByteIO(p) *(((volatile unsigned char)*)(p)) A bit cryptic, but I guess this is function ByteIO(var p):puchar; inline; begin result:=puchar(@p); end; > #define port=ByteIO(_port) const port = puchar(_port); // !??!? > ByteIO(_port) = 0x55; > > may look queer to some watchers, but > > port = 0x55; port^:=$55; _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
