Subversion Repositories pentevo

#pragma once

struct ISA_MODEM

{

   HANDLE hPort;

   OVERLAPPED OvW;

   OVERLAPPED OvR;

   unsigned char reg[8];

   union {

      unsigned char div[2];

      unsigned short divfq;

   };

   unsigned char open_port;

   unsigned char align;

   enum { BSIZE = 1024 }; // should be power of 2

   unsigned rhead, rtail, whead, wtail;

   unsigned char rcbuf[BSIZE], wbuf[BSIZE];

   void open(int port);

   void close();

   void io();

   void write(unsigned nreg, unsigned char value);

   unsigned char read(unsigned nreg);

   void setup_int();

};