[Coco] Re: Re: CoCo related question? (Better edit for coco3.rom)

Albert Stinger albertstinger24 at canada.com
Wed Mar 23 19:58:23 EST 2005


That would make a nice addition to the rom being you only get 32K
on board rom and either a 16K or 32K cartridge rom. The rom image
could be compressed and in the normal startup code you could include
the decompression of rom into ram, but how much extra space would
you get by compressing the rom image?

Albert Stinger

"John R. Hogerhuis" <jhoger at pobox.com> wrote 
in message news:1111608552.15697.388.camel at aragorn...
> On Wed, 2005-03-23 at 13:07 -0500, Albert Stinger wrote:
>> More questions,
>>
>> Exactly how much rom space is available in the coco3 rom and
>> could be used to make a better edit command?  Where is this
>> rom space located in the rom image?  What would be the best
>> way to interface to the edit command so you could have full
>> screen editing with the cursor keys?
>>
>
> Well I think coco3 copies ROM to RAM and runs from there.
>
> Maybe you could compress the ROM image and get some space that way? Then
> your extensions would reside in the ROM, but you would run them from
> RAM. Lots of RAM in the coco3.
>
> You would lose a bit of space to the decompression routine though. But
> typically decompression routines are fairly small compared to
> compression routines. On balance, I'm sure you would gain some space.
>
> The compression routine would just be run on the desktop.
>
> -- John.
>
>
>
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