Re: LZ: RAM expander
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> To all those speaking of ways to make the processor directly access
> the RAM expander: Forget it.
> There is only one way, and that is to pull the original RAM bank,
> put in tons of bank switching hardware, etc., etc.
> The link port is *not* a data bus.
> Tying the memory request line to the IRQ will just lock the
> processor--it would trigger on every memory access, including
> those needing to pull data in from the expander to the calc!
Oh, yeah. I knew it only jumps the the IRQ service routine at the
end of each instruction so I though that it might work, but now that
you mention it, I realize that the IRQ service routine will trigger
an interrupt... Oh, well, I never liked the idea anyway. :)
Ben
shakal@ns.net
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