[Coco] hardware

[John Eric]

it's also a good idea to disable the unused gates in the 74ls02 by connecting the unused inputs (not the outputs) to either vcc or gnd. with a 74ls02, i use vcc.




________________________________
From: mike delyea <mdelyea at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Saturday, January 3, 2009 9:08:28 PM
Subject: Re: [Coco] hardware

The particular Atari monitor I was using was a 1080.  There is no
specific info on the internet for the 1080.  All references I found
were for the 1084, which is supposed to be the same as the 1080,
unless you got the other model with the 26 pin connector.  My travails
trying to get that monitor working, and my ultimate success can be
found here.

http://www.coco3.com/modules.php?name=Forums&file=viewtopic&p=1718&highlight=#1718

On Sat, Jan 3, 2009 at 9:54 PM, John Eric <jet.pack at ymail.com> wrote:
> His atari model may have needed differing sync levels? or composite sync? or something? Jeric
>
>
>
>
> ________________________________
> From: BookWorm <bookworm at cavenet.com>
> To: coco at maltedmedia.com
> Sent: Saturday, January 3, 2009 8:37:48 PM
> Subject: Re: [Coco] hardware
>
>> I have pretty minimal hardware skills,
>
> You should see mine...
>
>> but I did manage to piece
>> together a circuit to invert the coco video signal so I could drive an
>> Atari monitor
>
> Are you refering to an EGA monitor?
>
>>(surprisingly no one else on the list could help me - so
>> I ended up doing it all myself- figuring out the correct chip and
>> designing the circuit).
>
> That's because Atari monitors are already compatible with the CoCo 3. They
> don't require converting.
>
>> soldering (heh, i almost wrote slobbering)
>
> That's what I do with a slodering iron too.
>
>> Forget about the coco4
>
> I'm trying.
>
>> and FPGA
>
> Actualy, I like James's FPGA GIME upgrade. I hope I can order one soon.
>
>>and hard drives
>
> You don't have a hard drive? Cloud 9 sells SCSI and IDE controllers.
>
>
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