[Coco] Computerdoc - Coco Hardware Development Adapter

[Kandur]

Unfortunately all I have is what you see in the blog.
Well, added one more photo of the board's back.
http://qdv.pw/coco/wp-content/uploads/2014/08/front-back.jpg 
Waiting for Kevin Digg's reply, he may have more on this board.

Kandur

Monday, October 6, 2014, 1:24:54 PM, you wrote:
> do you have the pcb layout files?
> Or a spare pcb?
> Camillus
> On 10/6/2014 12:22:41 PM, Kandur <k at qdv.pw> wrote:
> Hi Kip,
> Here is my blog's Super Board address:
> http://qdv.pw/coco/?p=201
> From there you can download the device descriptors
> and other source files, the parts list is there too.
> Unfortunately I have no schematic for this board.
> I was hoping that Kevin Diggs, having the same board, may have one.
> So far using an ohm meter found out that the 1488 RS-232 driver's
> -V pin is connected to the edge connector's #1 pin,
> (-5V on Coco-1, N/C on Coco-3). In the Coco-3 I'd like to connnect the
> junction of D3&D4 in the power supply, to the edge connector's pin 1,
> via a resistor, to supply -5V to the Super Board.
> I only have a Coco-3, any caveats about trying to do that?

> BTW here is the board's memory map:
> PIA equ $FF64 address of baud rate pia
> PIA1 equ $FF60 address of 2nd rate port
> PORT1 equ $FF68 address of acia #1
> PORT2 equ $FF6C address of acia #2
> PORT3 equ $FF78 address of acia #3
> PORT4 equ $FF7C address of acia #4
> CCPIA equ $FF22 address of coco firq pia
> PIACR equ $FF23

> One more finding, the two BR-2325 button cells are
> connected parallel. These seem to power only the HD146818
> Real Time Clock chip, does it need more then one BR-2325?

> Kandur

> Monday, October 6, 2014, 12:16:57 AM, you wrote:
>> Hi Kandur!
>> Thanks a bunch. I'll be waiting for your email.
>> Could you resend a link to your blog? I can't find it in my email database
>> as of yet. Thanks a bunch.
>> Yes, I think I do remember seeing some 6850 driver descriptors in the list
>> of your archive last time I read it. I want to look at them again. I would
>> also like to see some schematics if available. I'm working on what will one
>> day be my biggest project yet. I'm nowhere near ready to announce it yet.
>> It's in the beginning stages of design at this point. I'd like to get a
>> copy of that software so I can begin to collect the drivers and driver
>> descriptors I will need. You can send it directly to my email address
>> below. Thanks a bunch! Take care my friend.

>> Kip Koon

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