[Coco] 8k/16k bankable EPROM cartrdige board

[Chad H]

I'm in the same boat there Bill.  I have no experience with Y connectors.  I
don't even have a MPI.  I was hoping Kandur knew or someone else would chime
in with some clarification.

-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Bill Pierce
via Coco
Sent: Sunday, September 07, 2014 3:56 PM
To: coco at maltedmedia.com
Subject: Re: [Coco] 8k/16k bankable EPROM cartrdige board


Chad.
I really don't know much about these things, but wouldn't tying an eprom on
the same lines with another cart (exmpl: disk controller) make the 2 carts
conflict with each other?
Cart with no roms would probably not matter, but something like a disk
controller or Orch90 that has a rom, it seems it would cause conflicts.
Again, I know little of how this works.
 

Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
http://www.cocopedia.com/wiki/index.php/Main_Page
E-Mail: ooogalapasooo at aol.com


 
 
-----Original Message-----
From: Chad H <chadbh74 at hotmail.com>
To: 'CoCoList for Color Computer Enthusiasts' <coco at maltedmedia.com>
Sent: Sun, Sep 7, 2014 4:23 pm
Subject: Re: [Coco] 8k/16k bankable EPROM cartrdige board


Kandur, Is this what you need??
 
http://www.mediafire.com/watch/tjwkwtiifl2a8wd/3D_Render_(Experimental_Y-Car
d_Edge).mp4

(Note the 40 pin connector marks, 1 to 1 arrangement) Not all of the 40 pins
were used by the EPROM, but all 40 are tied together with each card edge.

It will just be a couple of bucks more per board to do this that's all.

-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Chad H
Sent: Sunday, September 07, 2014 12:50 PM
To: 'CoCoList for Color Computer Enthusiasts'
Subject: Re: [Coco] 8k/16k bankable EPROM cartrdige board

So far, I've been ordering them in sets of 3 from OSHPark.  That's the
minimum order.  I am charged per square inch.  If the PCB doesn't need to be
lengthened, the price won't change.  I could theoretically delete the open
notch at the top of the PCB and replace with the card connector.  This
should work well if the PCB won't be in a cartridge housing.  Not sure how
it would effect things if it's mounted in a cartridge.

I usually order another set once my last one has been sold.  Turn around
time is 2-3 weeks.  I can design and order a sample set and see how it turns
out.

-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Kandur
Sent: Sunday, September 07, 2014 12:29 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] 8k/16k bankable EPROM cartrdige board

Sounds perfect. 
How would that effect the price and
when will you order the next run?

Kandur

Sunday, September 7, 2014, 6:45:28 AM, you wrote:
> Or I could do a special version of the EPROM board with the 
> straight-thru male header.  Its really very simple change in the board
layout editor then the PCB house does it.

> Sent from my ASUS Infinity

> On Sep 6, 2014 10:28 PM, Kandur <k at qdv.pw> wrote:
> Something like this for $6.95 + shipping 
> http://www.electronicplus.com/prodSearch.asp?prod_search=PC-501&Submit
> =Search
> 5 pins have to be cut off from this.
> http://www.electronicplus.com/images/products/PC-501.jpg

> Kandur

> Saturday, September 6, 2014, 8:00:56 PM, you wrote:
>> Your Y cable to card edge instead of 40 pin socket header

>> On Sep 6, 2014 9:17 PM, Kandur <k at qdv.pw> wrote:
>> This one seem to be simpler,
>> all connections straight thorough on both side of the board.
>> http://qdv.pw//eng/_photos/Computers/adapter.jpg

>> Kandur

>> Saturday, September 6, 2014, 6:24:40 PM, you wrote:
>>> I'm sure I could...just would have to make sure of the pinouts first

>>> On Sep 6, 2014 7:38 PM, Kandur <k at qdv.pw> wrote:
>>> After 3 tries and url edits, success. Very nice board.
>>> If you had a 40 pin male IDC header on this board for an easy 
>>> Y-cable connection, I would order one for sure.
>>> Could you make an adapter board with one end having a Coco cartridge 
>>> slot edge connector, the other end having a 40 pin male IDC header 
>>> for a Y-cable?

>>> Kandur

>>> Saturday, September 6, 2014, 4:57:33 PM, you wrote:
>>>> Make sure you copy the whole link with numbers.  Emails to this 
>>>> forum often chop the links for some reason

>>>> On Sep 6, 2014 6:30 PM, Kandur <k at qdv.pw> wrote:
>>>> "This listing
>>>> (Tandy-TRS-80-CoCo-Color-Computer-EPROM-Pak-Cartridge) has been
removed, or this item is not available.

>>>> Please check that you've entered the correct item number Listings 
>>>> that have ended 90 or more days ago will not be available for viewing.
"

>>>> Kandur

>>>> Saturday, September 6, 2014, 2:09:37 PM, you wrote:
>>>>> I have another batch of these in if anyone is interested.



>>>>> http://www.ebay.com/itm/Tandy-TRS-80-CoCo-Color-Computer-EPROM-Pak
>>>>> -Cartridge
>>>>> -/321514156488?



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