Re: [cc65] C64 Cartridge clarifications

Hi,

On 2012-03-08 08:46, skoe@directbox.com wrote:
>> > AFAIR there is a mistake or a fuzzy description of
>> > "active/inactive/1/0" in the CRT documentation or even in the CRT
>> > format, so be careful. A normal 16k Cartridge has both lines low.
>>

I agree - the current wording around 0/1/inactive/active in the CRT 
documentation is quite confusing.

>>
>>  and even worse, in vice - where one of the two is inverted (because the
>>  original AR works like that, and vice basically emulates AR only =P)
>
> This reminds me to another thing: In the CRT/CHIP header these two lines
> are redundant information: The cartridge type (and therefore the emulation
> specific to this type) implies the state of these lines anyway. In many
> cartridges they are even dynamic, so the CHIP header can't know their
> state.
>

I know this is getting more and more OT for this mailinglist (CC65). But 
this seems like the right place and moment to ask anyway - while we're 
at the topic of the CRT fileformat....

Regarding Ocean Type 1 cartridges (CRT ID 5) - have someone ever met 
anything else ?

I cannot find info about Ocean Type >= 2 anywhere...

It seems to me that someone in the beginning of time wanted to assign 
every Ocean cartridge combination its own type - and then regretted and 
squashed them all into one format (Ocean Type 1) - does anyone know or 
remember the actions and reasons ?

Also the updated CRT format file in the Vice svn-tree mentions an Ocean 
cartridge size of 32Kb... but it is certainly not an Ocean cartridge 
that I know of... have anyone ever met a 32Kb Ocean cartrigde in the 
wild ? As far as I know the list of known Ocean cartridges (12 pieces) 
have been complete for many years.

Thanks

/Uffe



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