[Coco] [color computer] Just imagining...

[jdaggett at gate.net]

Phil 

The glue logic using the BA/BS/TSC lines should not be that dififcult to 
recreate. A second processor with its own rom and ram can beconfigured as 
an I/O processor or any coprocessor. 

james

On 31 Jan 2006 at 18:37, Phill Harvey-Smith wrote:

Date sent:      	Tue, 31 Jan 2006 18:37:09 +0000
From:           	Phill Harvey-Smith <afra at aurigae.demon.co.uk>
To:             	CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Subject:        	Re: [Coco] [color computer] Just imagining...
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> This is basically what the Dragon Beta did, used one 68B09 to do all the 

> processing and another to handle the I/O. Both sat on the same bus and 

> had some logic to abitrate that seems to have been based around using 

> BS.BA and the TSC lines. Because the machine was not fully developed at 

> the time Dragon went under, the second CPU really only ever got used as 

> a disk DMA processor. Would have been a really cool machine back in 

> 1984, but expensive too :)

> 

> Phill.

>