[Coco] Kipper SBC v1.1

[Kip Koon]

Hi Joe, 
> So with this design, if I wanted a serial port I'd have to build a board with a uart and max232 and connect it to the Kipper bus?
That problem was racing through my mind as I was adding the Terminal/Keyboard onto the Kipper SBC v1.1 PCB.  I of course realized this after the fact.  <sheepish grin here!>  Don't worry though, Kipper SBC v1 still has the MAX232 chip and the RS-232 DB9 female connector. A couple of parts more and the modified !RTS can be on it as well.  
I really want to put the Terminal/Keyboard on a separate PCB giving the user the option to use either the RS-232 port for PC communications and have a storage possibility via the list command with copy and paste options in Hyperterminal or use the separate Terminal/Keyboard with no storage capability as of yet anyway.  Maybe some type of switching on the fly between the RS-232 port and the Terminal/Keyboard could be devised or how about I add the MAX232 chip and the RS-232 DB9 Female connector back in with both options connected together and just use one at a time.  Thoughts?

Kip Koon
computerdoc at sc.rr.com
http://www.cocopedia.com/wiki/index.php/Kip_Koon



-----Original Message-----
From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Joe Grubbs
Sent: Wednesday, March 11, 2015 9:58 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Kipper SBC v1.1

So with this design, if I wanted a serial port I'd have to build a board with a uart and max232 and connect it to the Kipper bus?


> From: computerdoc at sc.rr.com
> To: coco at maltedmedia.com
> Date: Wed, 11 Mar 2015 09:07:17 -0400
> Subject: [Coco] Kipper SBC v1.1
> 
> Hi Guys,
> 
> I have added the Video Display Terminal and PS/2 Keyboard to the 
> MC68B50 ACIA chip and removed the MAX-232 Voltage Translator chip and 
> the RS-232 connector since the Terminal/Keyboard use the MC68B50 chip 
> to communicate serially with the host.
> 
> I added the mod for the !RTS line, but with the connector gone, I'm 
> not sure if it is needed any more.  Perhaps someone less tired than I 
> can verify if it's still needed.
> 
> I divided the $A000-BFFF into eight separate sections, so now what was 
> the
> RS-232 port that is now the Terminal/Keyboard is addressed at $A000-$A1FF.
> This leaves partially decoded address space for 7 other devices.
> 
> Here are the links to the pdfs.  
> 
> Schematic Sheet 1 - Main
> 
> >https://www.dropbox.com/s/dur3q5896vgml4o/Kipper%20SBC%20v1.1%20sch%2
> >01.pdf
> ?dl=0>
> 
> Schematic Sheet 2 - Power
> 
> <https://www.dropbox.com/s/0yfbko0a5le691y/Kipper%20SBC%20v1.1%20sch%2
> 02.pdf
> ?dl=0>
> 
> Schematic Sheet 3 - Kipper Bus
> 
> <https://www.dropbox.com/s/3bq6rt0wxx93hyu/Kipper%20SBC%20v1.1%20sch%2
> 03.pdf
> ?dl=0>
> 
> Schematic Sheet 4 - Terminal/Keyboard
> 
> <https://www.dropbox.com/s/1qn66jt8yqshkmd/Kipper%20SBC%20v1.1%20sch%2
> 04.pdf
> ?dl=0>
> 
> PCB Layout
> 
> <https://www.dropbox.com/s/faj0ijqcr4uq7xx/Kipper%20SBC%20v1.1%20brd.p
> df?dl=
> 0>
> 
> I'm very tired since I've worked all night so I hope I didn't make any 
> mistakes.  I would not mind at all if someone wanted to check my work.  
> :) As always suggestions, corrections, ideas as always welcome.  Now 
> it's time for me to go to . zzzzz.  Take care my friends.
> 
>  
> 
> Kip Koon
> 
>  <mailto:computerdoc at sc.rr.com> computerdoc at sc.rr.com
> 
>  <http://www.cocopedia.com/wiki/index.php/Kip_Koon>
> http://www.cocopedia.com/wiki/index.php/Kip_Koon
> 
>  
> 
>  
> 
> 
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