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| From: Nicolas Welte
Date: 2000-11-15
Subject: Re: 364 O.S.
|
"Grosz, Attila" wrote:
>
> |> This will be most interesting to compare with the C64 Magic
> |Voice ROM,
> |> which is also on Funet.
>
> What an idea!!! I think I'll make a disassembly of it, too :-)
Beware of the strange memory mapping of that ROM. At bootup, it will be mapped to $A000-$BFFF and $E000-$FFFF, and then the software will copy the ROM into RAM (but now from $A000-$CFFF or something, since the voice extension sits at $C000, and the cartridge ROM will then be disabled.
But good luck, I'm very interested in the result!
> |> All of this means a V364-compatible speech cartridge for
> |other 264 series
> |> machines might just be possible.
>
> A good thing would be to understand the means of the PARCOR synthesis, so
> then the Magic Voice for CV364 could be completely reconstructed.
Is the $FD20 select line also available on the cartridge port? I thought it was just a dead end inside the 264 series machines.
Nicolas
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