Re: IIgs device control question

["Michael J. Mahon" <mjmahon@aol.com>]

mswaine wrote:
> As some of you know, I'm (slowly) working on a GS Nadanet remote
> device control project, with the actual device control based on the A2
> designs in David Pessen's book Industrial Automation. Right now, I'm
> interested in using the John Bell 6522 parallel card (one of several
> options he recommends), but I'm learning as I go here and I'm worried
> about it working correctly with the 65C816, since everything I've read
> on the card so far seems to relate only to the 2E. Would I be running
> into timing issues or other icebergs in this ocean?

The peripheral bus speed for all Apple II's, including the IIgs, is
1MHz, so your parallel card(s) will be quite happy.

Since you're running NadaNet, you will be running the IIgs processor
at 1MHz as well, so even 6502 timing loops will perform as expected.

-michael

AppleCrate: An Apple II "blade server"!
Home page:  http://members.aol.com/MJMahon/

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