[Coco] CC-Five (was Re: Pseudo CoCo4???) (LONG)

[jdaggett at gate.net]

What is the price and availablity of the NB-1?

james

On 23 Jan 2007 at 14:50, Mark McDougall wrote:

> Joel Ewy wrote:
> 
> > Include the logic
> > level conversion on that board and try to design for the future, so
> > that upgrading would mean replacing only the FPGA board.  Is the
> > logic level conversion intrinsically difficult/expensive, or is it
> > just another design consideration?
> 
> Have you seen Altium's Nanoboard NB-1?
> 
> I like the idea of having a Coco 'personality' board, but I'd go 1
> step further. It'd be a cross between the Nanoboard and the C-One.
> That is, design a generic platform - perhaps in a standard form-factor
> (PC) - with the 'essentials' such as SDRAM, SRAM, flash, video
> (VGA+composite), audio (decent stereo audio DAC) + amplifiers, PS/2
> connector(s), SD/MMC/CF/IDE interfaces, USB host chip for starters.
> 
> Then via general-purpose I/O header(s), add a "CoCo personality" board
> which might have cartridge connector, chicklet keyboard connector,
> cassette port, joystick port(s) etc.
> 
> Finally, the FPGA itself sits on a daughter-board - something already
> with more than enough I/O to handle the current design - but able to
> be replaced with higher gate-count devices as technology allows.
> 
> It would be reasonably inexpensive then to add further "personality"
> boards for TRS-80 Model I, Apple II, C64 etc etc. Not to mention NES,
> SNES, MegaDrive, arcade (JAMMA) at some later stage...
> 
> The stuff I'm playing around with atm is similar in some respects. I
> have a board with FPGA, SDRAM, SRAM, ethernet and CF adapter that was
> used in some proprietary hardware. I've hijacked it and added my own
> daughterboard with power, VGA, composite and PS/2. I'm also designing
> a 2nd daughterboard with a JAMMA connector and stereo SPI sound DAC.
> This latter board must interface to 5V so I'm using a MAX3000 CPLD
> (which also lets me multiplex the inputs). Theoretically I could do
> another board with a Coco cartridge connector on it. Thinking about it
> I could probably just re-wire the JAMMA signals to the right
> edge-connector and re-program the CPLD... hmmm...
> 
> Regards,
> Mark
> 
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