[Coco] Dual UART with FIFO Card for the CoCo

[sales at gimechip.com]

That wouldn't be good....
Okay - bad idea then.

----- Original Message ----- 
From: "Darren A" <mechacoco at gmail.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Tuesday, June 15, 2010 9:15 AM
Subject: Re: [Coco] Dual UART with FIFO Card for the CoCo


> On 6/15/10, sales at gimechip.com wrote:
>>
>>  I was going to design an interface that plugged into
>> the cartridge port - this way the CoCo wouldn't even have to be opened 
>> and
>> it would not matter which CoCo Model you have - the keyboard connector
>> wouldn't matter. My thinking was that whenever the CoCo made an attempt 
>> to
>> access the keyboard memory areas, the plug in cartridge would assert 
>> SLENB*
>> disabling the internal devices and replacing them with the circuitry 
>> inside
>> the keyboard interface cartridge. It seems plausible -
>>
>
> ---
>
> If you use SLENB to disable PIA 0 whenever it is accessed, then you
> also lose the ability to read the joystick fire buttons, control the
> analog mux, and use the VSYNC and HSYNC PIA interrupts.
>
> Darren
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco


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