On Fri, 2006-04-07 at 16:03, Mike McCarty wrote: > MSDOS does *not* use interrupt driven I/O on those ports. It uses > BIOS calls, specifically INT 14h. For example, from Ralph Brown's > interrupt list I don't see how trusting bios equates to secure code. > Precisely. And unless an application invokes MSDOS, it will never > do anything to the serial port, nor will the BIOS. You can say the same for the keyboard - and the input devices are more or less interchangeable. The application might be COPY. > If there is more code, there is more exposure. MSDOS has much less > code than Linux and the Linux drivers for the serial ports. I think you need to take quality of code into account in a statement like that. -- Les Mikesell lesmikesell@xxxxxxxxx
