RE: Article PC-card
Date: 2001-02-28 10:32:49

> ... or in my case, programmable interrupt controller.

The 8259. 

> In order ot properly support ISA devices, I feel the whole ISA DMA and IRQ
> system should be implemented. 

I agree. But using the 8259 for this purpose? In 1988 I had ny reasons NOT 
to use it. I will study the datasheets again to see why.

>  However, I dont believe I'd hook NMI up. 

Why not? It certainly won't harm. And don't fall in the same trap the 
designers of the CP/M-cart for the C64 did: they didn't "need" NMI and IRQ 
either. Later they regretted that very much.

Groetjes, Ruud

This message was sent through the cbm-hackers mailing list.
To unsubscribe: echo unsubscribe | mail

Archive generated by hypermail 2.1.1.