[Coco] Cartridge size limit?

[L. Curtis Boyle]

Yes, you could (as both John and I mentioned - you need MMU style supporting hardware). I *think* Lee was asking about “normal” cartridges.

L. Curtis Boyle
curtisboyle at sasktel.net

TRS-80 Color Computer Games website
http://www.lcurtisboyle.com/nitros9/coco_game_list.html



> On May 3, 2016, at 1:19 PM, Hendrikus Rietveld <rietveldh at hotmail.com> wrote:
> 
> Can't you use a pak like the new flash pak to dump your rom and have it bank switched with the software?    Thought I heard that at the fest in Chicago
> 
> Sent from my BlackBerry 10 smartphone.
>  Original Message
> From: L. Curtis Boyle
> Sent: Tuesday, May 3, 2016 3:12 PM
> To: CoCoList for Color Computer Enthusiasts
> Reply To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Cartridge size limit?
> 
> 
> John is correct - 16K for Coco 1/2 (minus I/O space, of course), and 32K for the Coco 3 (minus I/O as well, and vector page RAM if your app requires it). Paks like Predator and Robocop that went past that added their own MMU-style hardware to support anything >32K, as there is only 32K of address space to use (everything past that must be bank switched).
> 
> L. Curtis Boyle
> curtisboyle at sasktel.net
> 
> TRS-80 Color Computer Games website
> http://www.lcurtisboyle.com/nitros9/coco_game_list.html
> 
> 
> 
>> On May 3, 2016, at 12:59 PM, John W. Linville <linville at tuxdriver.com> wrote:
>> 
>> Note that Robocop uses a bank-switching technique to achieve that,
>> and AFAIK no one is actively producing such hardware (yet).
>> 
>> For "normal" (i.e. not bank-switched) usage, a CoCo ROM Pak is limited
>> to a bit less than 16K.  For a CoCo3-only ROM Pak, the normal limit
>> would be a bit less than 32K.
>> 
>> John
>> 
>> On Tue, May 03, 2016 at 02:53:39PM -0400, Lee Patterson wrote:
>>> Thanks, I Just verified that it is indeed 128k.
>>> 
>>> http://www.lcurtisboyle.com/nitros9/robocop.html
>>> 
>>> 
>>> --- -- -  -
>>> 10 + 1 = 3
>>> 8BitCoder.com
>>> 
>>>> On May 3, 2016, at 14:45, Hendrikus Rietveld <rietveldh at hotmail.com> wrote:
>>>> 
>>>> Robocop is 128k?
>>>> 
>>>> Sent from my BlackBerry 10 smartphone.
>>>> Original Message
>>>> From: Lee Patterson
>>>> Sent: Tuesday, May 3, 2016 2:36 PM
>>>> To: Bill Pierce via Coco
>>>> Reply To: CoCoList for Color Computer Enthusiasts
>>>> Subject: [Coco] Cartridge size limit?
>>>> 
>>>> 
>>>> What is the max size for a cartridge based app?
>>>> 
>>>> --- -- -  -
>>>> 10 + 1 = 3
>>>> 8BitCoder.com
>>>> 
>>>> --
>>>> Coco mailing list
>>>> Coco at maltedmedia.com
>>>> https://pairlist5.pair.net/mailman/listinfo/coco
>>>> 
>>>> --
>>>> Coco mailing list
>>>> Coco at maltedmedia.com
>>>> https://pairlist5.pair.net/mailman/listinfo/coco
>>> 
>>> --
>>> Coco mailing list
>>> Coco at maltedmedia.com
>>> https://pairlist5.pair.net/mailman/listinfo/coco
>> 
>> --
>> John W. Linville              Someday the world will need a hero, and you
>> linville at tuxdriver.com                        might be all we have.  Be ready.
>> 
>> --
>> Coco mailing list
>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>> 
> 
> 
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>