Megahertz,
good thoughts but under DOS there's no speed difference between on MB and card peripherals, assuming they're on the same bus type. DOS works on an interupt basis and addresses devices by the drivers and the port address (378 etc.)
Windows is another matter and usually windows 'virtualises' the driver and so disconnects the physical device from the OS, so causing timing issues and possible speed differences between similar devices. Mach 2 cleverly gets around this by loading a driver for the PPort that provides direct hardware access by interupt much as DOS does above. More than one PPort, either MB integrated or PCI will be covered by the direct access driver installed as part of the MAch installation and you should expect similar response times from either. |