From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2003-03-13 17:45:11
On Thu, Mar 13, 2003 at 04:18:26PM +0100, MagerValp wrote:
> I gave it a shot, and IRQ handling was the stumbling block. The Plus/4
> only has a single IRQ line for all its devices, and the kernal
> dispatches IRQs to the corresponding handlers. I wasn't familiar
> enough with the machine to get it right, and there aren't any good
> kernal disassemblies out there...
If you know a little German: "C16, C116 und Plus/4 ROM-Listing" by Christian
Quirin Spitzner is very well done. It is available on ebay here and then and
usually not too expensive.
Regards
Uz
--
Ullrich von Bassewitz uz@musoftware.de
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