Re: A86: RAM Page $80 ??
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Re: A86: RAM Page $80 ??
At 11:49 PM 8/11/97 -0400, you wrote:
>
>I was snooping around in the ROM, as I am wont to do, and stumbled across
>a piece of code that does something like this: (this is not exact)
>
> ld a,$80
> out (6),a
> ld a,(somewhere)
> ld ($8000),a
>
>Then it restores the previous RAM page. When I send $80 to port 6, every
>byte in $8000-BFFF reads as $1A. My first thought was that this might be
>some kind of memory-mapped I/O, but when I write various values to
>($8000), nothing happens. Anyone have any ideas?
Perhaps this is the scratch place that many people have been struggling to
find... (don't take me for sure on that though, just a guess =)..)
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