On Fri, 17 Sep 1999, Si Owen wrote: > > *However* :) For external ports this rounding to the nearest 8 since some > > fixed point doesn't seem to occur. Also, IIRC, IN A,(n) and IN r,(C) both > > take the same time for external ports (12 t-states). > > Some are obviously internal or external, but I'm not sure about all of them. > Are the MIDI, floppy, printer and sound ports still classed as internal? > (possibly)
Internal, in this context, refers to whether or not it is the ASIC itself which handles these ports. Eg, it handles the MIDI interactions so that is internal, but there is a seperate sound chip so those ports are classed external. The floppy ports are also so a seperate chip, and I think the printer ports are external too. Hmmm, if you're simulating the printer port, would it be possible to attach a virtual EdDAC to it? Andrew -- -- Andrew Collier ([EMAIL PROTECTED]) -- My other -- http://mnemotech.ucam.org -- .sig is a -- Part 3 Materials Science, Cambridge -- PDF file --
