Re: iic boot from serial port?

[CUTjefbla@bconnex.net (Jeff Blakeney)]

On Mon, 19 Feb 2001 19:20:21 +0900, Paul Guertin <pg@sff.net> wrote:

>Do you have any data on how fast a parallel port can go? I used
>to have a parallel-port Zip drive on my PC and it was certainly
>much faster than a 19200 bps serial connection.

Yes, a parallel connection can theortically be at least 8 times faster
than a serial connection as it can send 8 bits in the same time it
takes a serial connection to send 1 bit.

However, something I neglected to consider before might make even more
of a difference on the overall transfer speed.  The speed at which the
Apple II can actually move data to and from the transmission hardware.

Even using a LANceGS card, which should be able to do 10Mbps or
approximately 1MBps, I don't think I've heard of anyone achieving even
32KBps transfer rates.  Even my 8 MHz IIgs maxes out doing serial
transfers at about 2500-3000 cps with the serial port set at 57,600
bps using Spectrum (it is slightly faster in ProTERM).

--
 Jeff Blakeney - Dean of the Apple II Unversity on A2Central.com