[Coco] Re: [Color Computer] Is this likely to work ?

[Glen VanDenBiggelaar]

Humm,
A "complete" NitrOS 09 Development paK with RTC, Flash rom, all the tools , 
compiler ETC $40-$50. A real Complete Cart.
Humm
Specialize different ones by taking tools away, but adding different 
software, a "beginners" 09 with some kind of toutorial package etc mabey 
around the $40 range is still not too much
Humm, something to ponder
>
>
>On Sep 6, 2005, at 10:06 PM, Glen VanDenBiggelaar wrote:
>
>>
>>Since you already have a battery backup, how hard would it be to  through 
>>a "realtime Clock"? if you had a Cart with a Ram drive and  a clock and it 
>>was cheap (under $20) itt hink you would have a real  hit threre.
>>-Glen
>
>Glen,
>
>Sure, an RTC could be put on, as well as FLASH to hold ROM images.  I  
>would venture to say that all of that could even fit in a shortie pak  on a 
>very small cartridge footprint.
>
>$20?  Could be done, but you would  be giving away your time and some  of 
>your cost :)  Still it's cool to dream about what can be done!
>
>>>
>>>Boisy
>>>
>>>512K x8 is easy to do now via a cartridge.  A single 512Kx 55 nS
>>>sram is $10. Add a backup battery and you  have some more
>>>memory. Even the Dallas NVRAM with RTC is cheap compared to
>>>20 yrs ago.
>>>
>>>james
>>>
>>>On 6 Sep 2005 at 21:27, Boisy G. Pitre wrote:
>>>
>>>From:               "Boisy G. Pitre" <boisy at boisypitre.com>
>>>Subject:            Re: [Coco] Re: [Color Computer] Is this likely  to 
>>>work ?
>>>Date sent:          Tue, 6 Sep 2005 21:27:35 -0500
>>>To:                 CoCoList for Color Computer Enthusiasts  
>>><coco at maltedmedia.com>
>>>Send reply to:      CoCoList for Color Computer Enthusiasts  
>>><coco at maltedmedia.com>
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>>>
>>> >
>>> > On Sep 6, 2005, at 7:12 PM, Neil Morrison wrote:
>>> >
>>> >
>>> > >
>>> > > The question is why and what can be done with this memory? A more
>>> > > interesting project would be a combined RAM/ROM card to plug into
>>> > > the Multipak under OS-9 which would have, say, 1 Mb of ROM and  1 Mb
>>> > > of  RAM. With a driver OS-9 could use this to run even the
>>> > > C-Compiler in a fast  fashion.
>>> > >
>>> >
>>> > One thing that comes to mind from Phill's idea is a large RAM Disk.
>>> > There was a similar product back in the 80s for the CoCo 2, I  believe
>>> > it was called the J&R Banker or something similar?
>>> >
>>> > Of course, a cartridge based battery-backup RAM disk would also be
>>> > nice.  CRC's Tony Distefano had a 256K and 512K model, and I myself
>>> > have the 512K one.  With today's RAM, you could easily support
>>> > megabytes of RAM space.
>>> >
>>> > The possibilities are fun and endless...
>>> >
>>> > Boisy
>>> >
>>> >
>>> > >
>>> > >
>>> > >> Hi,
>>> > >>
>>> > >> I am toying with the idea of developing some sort of  expansion RAM
>>> > >> for the CoCo 1/2 & Dragons, basically the non-gime machines. I'm
>>> > >> just  trying to bounce the idea here to see if it is likley to
>>> > >> work.
>>> > >>
>>> > >> Looking at the circuit sheets for the Dragon & CoCo 1, it seems
>>> > >> that access to the RAM is mediated by the SAM, and the LS244  
>>>buffer
>>> > >> on the output of the RAM. Also reading the datasheet for the  4164
>>> > >> RAM  chip, it seems that /RAS is used as a chip enable to set  it 
>>>up
>>> > >> to be accessed.
>>> > >>  ....
>>> > >>
>>> > >>
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