Re: [stella] Multiloads

Subject: Re: [stella] Multiloads
From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 21 Oct 1997 14:19:33 +0200
>By the way, how is RAM within a cart able to be used, since there is no R/W
>line on the cart port - I imagine some convoluted thing writing to 'magic'

That depends on how the RAM has been implemented in hardware. Atari's
Superchip RAM for example uses seperated addresse for read and write.
You would write to $F005 and read from $F085 in the 128 byte Superchip.

Supercharger RAM is a bit more difficult to write to. First you have to 
enable writing by writing the right value to the control byte at $FFF8.

Then you can access address $F000+X, where X is the value to be stored.
You have to access the address to be written to at a given number of
processorcycles after the access to $F000+X. 

For more info on the Supercharger you can check out Christopher Salomon's 
text on Nick Bensema's Atari page at 

Ciao, Eckhard Stolberg

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