Re: II.Sound question: why is it better on a //e, than a IIgs?

[Roger Johnstone <rojaws@orcon.net.nz>]

In <20041102235400.05880.00000052@mb-m28.aol.com> Obsbedia2 wrote:
> II.Sound on the //e plays .wav files whatever the size--it's only 
> limited by the memory card size, but... .... on the IIgs (launched by 
> the GS/OS) with an 8MEG Ram card, II.Sound only plays for a few 
> seconds. Why? JaY

IISound uses the Apple IIe auxiliary memory to store long sounds i.e. 
the memory that goes in the auxiliary slot.

Since the 65816 processor in the IIGS can address more than 64KB 
directly there's no need for it to use bank switching. The IIGS emulates 
one auxiliary bank so that it can run 128KB IIe software but the rest of 
the RAM can only be used by a program written for the IIGS.

IISound could be modified to use the IIGS memory, but the whole point of 
the program is to allow Apple IIs without a sound chip to play back 
digitised sounds. If you're going to write a special version for the 
IIGS you may as well have it use the IIGS sound chip too, since it would 
sound a lot better.

-- 
Roger Johnstone, Invercargill, New Zealand
http://vintageware.orcon.net.nz/
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