[Coco] [Color Computer] Re: POKE 65495,0

James Diffendaffer jdiffendaffer at yahoo.com
Sat Feb 3 01:27:54 EST 2007


A version for the CoCo 1/2 would be easy enough.  The Coco3 GIME
doesn't work the same as the SAM so it probably doesn't need a similar
program.

>On the Coco 3 the memory array would be a three deminsional array. 
>For 512K size the array would be 256 rows by 1024 columns by 16 bits
>deep. For the 4164 DRAMs used in the COCO2 it would be 256 rows by 
>256 columns 8 bits deep.
>
>Due to the array that the ram is organized on you would startt at 
>$0000 and increment every 256 bytes. Thus $0000 then $0100 and so 
>forth up to $FF00.
>
>james
>
>
>
>On 2 Feb 2007 at 20:45, James Diffendaffer wrote:
>
>
>> Ok, so each read refreshes that entire row in the RAM. So how large

>> is a row and what addresses would need to be read in order to make

>> sure all RAM is refreshed periodically?

>>

>>

>>

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>

>




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