[Coco] Tandy Assembly Exhibit: CocoMEM

[Dave Philipsen]

Yeah, that’s the problem when you start thinking about these hi-res displays.  The horsepower needed starts to strain a standard 6809 CPU.  And then of course you have to support faster memory if you up the CPU speed.

Dave

> On Oct 6, 2017, at 12:21 PM, Zippster <zippster278 at gmail.com> wrote:
> 
> All that memory, and big graphics screens…  Now you need speed beyond a 1.78MHz CPU.   :)
> 
> - Ed
> 
> 
> 
>> On Oct 6, 2017, at 12:08 PM, Bill Pierce via Coco <coco at maltedmedia.com> wrote
>> 
>> But, but, I wanna brag too.... I like the 64 meg...
>> 
>> Not requesting, but thinking aloud (in silent text)...
>> Given that you have now accomplished this feat of majik, could your design be used as a base to replace the GIME with an FPGA, then design a new GIME allowing new graphics modes (ala Coco3FPGA). Of course this would mean adding a new graphics circuit with VGA capabilities.... This gives creedence to the need for all that memory... BIG graphics screens!!
>> Yes, I know, that's a whole new board design and a lot to ask for, but we already have a VGA design and the GIME has been emulated in FPGA on several boards, so we just need the graphics capabilities. The design of the Coco3FPGA is a good reference of moving "forward" to a new Coco 3 and maintaining backwards compatibility.
>> 
>> 
>> 
>> 
>> Bill Pierce
>> "Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro Tull
>> 
> 
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco