[Coco] MM/1 and friends (was: "Historic" CD-i development systems...

[jdaggett at gate.net]

Al

I was not involved with the original design but maintainance of the 
proddust after factory turn over. I had the task of implementing a 
new EL driver circuitry and implementing the Dragonball EZ and VZ 
chip into the product. Just before I left the last major problem was 
fixed by replacing the 512K tsop package SRAM with BGA 
package. There was a problem with drops that flexed the main PCB 
and fractured solder connections on the SRAM. That caused  
OS9/OSK to really do weird things. 

I agree with you on the board could do some neat things. The 
display  is QVGA and there is 512K of SRAM. The OS sits in one 4 
megabit flash and there is room for applications and data to sit in 
the main flash and a second 4 megabit flash to h old other stuff. 

There was even a hurricane tracking program that was done for the 
PageWriter 2K. That was neat. It drew a map of the Gulf and 
Carribean and you could scroll up and down east and west. Several 
games and even user alterable alerts. There was a program 
development tools that allowed the writing of programs and 
modules to drop. I never got them but maybe someone can find 
them. 

it would be neat to play with the board just to use as an embedded 
system. 


james


On 18 Mar 2005 at 19:05, alsplace at pobox.com wrote:

Date sent:      	Fri, 18 Mar 2005 19:05:03 -0800
From:           	<alsplace at pobox.com>
Subject:        	Re: [Coco] MM/1 and friends (was:
	"Historic"	CD-i	development	
systems...
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> James,
> 
> You worked on the PageWriter project?  We used 'em quite a bit at
> Microware -- I had one for a good while, and was hooked on it.  They
> were using them at Disney World too, I noticed.
> 
> I think we just disposed of a reference board that was a Dragonball
> board (touch screen?) -- I always saw these little boards and thought
> they'd make cool OS-9 hobbyist machines to hack on.
> 
>      -- A
> 
> 
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