[Coco] Wordpak 2+ fully assembled
Kip Koon
computerdoc at sc.rr.com
Thu Apr 24 19:15:06 EDT 2014
Hi Luis!
This will be a very enjoyable project for me! I've been wanting to play
with my V9958 chips for a long time and with your new VGA display PCB, The
WordPak2+, now I can! Thank you for envisioning this project! I really
appreciate it! My next question that I have to answer is do I have a
monitor that will accept the 15KHZ signal!?! That remains to be seen. :)
I might have to make me an adapter for Roy Justice's RGB to VGA adapter. In
any event, I will like using this board. Thank you very much for the
schematic and source code also. Not having seen the PCB yet, I was
wondering if a 15KHZ to 30KHZ circuit could be made to fit on this PCB in a
future version since just about every modern VGA monitor accepts 30KHZ
signals. What do you think? Besides, Roy's adapter does not have a VGA
input plug on it. Hummm... I might just have to install one. Take care my
friend.
Kip
-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Luis Antoniosi (CoCoDemus)
Sent: Thursday, April 24, 2014 11:24 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Wordpak 2+ fully assembled
Here are the schematics and source code:
https://sites.google.com/site/tandycocoloco/dropbox/WordPak2p.zip?attredirec
ts=0&d=1
The part list:
1x V9958
4x 4464 64K-4BIT DRAM
1x 74LS138
1x 74LS133
3x 10uF Elko
4x 220uF Elko
2x 22uF Elko
3x 2N5401
1x BC548 (if 2N3901 reverse orientation) 1x 21.477270Mhz Oscillator 3x 104
Ceramic Capacitor 1x 22pF Ceramic Capacitor 3x 10K Ohms 3x 27K Ohms 3x 12K
Omhs 4x 100 Ohms 4x 1K Ohms
DSUB-15 Female PCB mounting
4x 18-DIP sockets
2x 16-DIP sockets
1x 64-SDIP (shrink) socket
I have to add extra 103 caps to reduce noise on each dram. I just added them
under the pcb connecting GND and VCC for each dram IC.
Enjoy
On Wed, Apr 23, 2014 at 8:35 AM, Ken H. <dragon.atv at gmail.com> wrote:
> OSHPark, unless you have a better source
>
>
> On Wed, Apr 23, 2014 at 3:32 PM, Luis Antoniosi (CoCoDemus) <
> retrocanada76 at gmail.com> wrote:
>
> > Sure. I'll release the designs today. What are you planning to use ?
> > Osh Park ?
> >
> >
> > On Wed, Apr 23, 2014 at 8:30 AM, Ken H. <dragon.atv at gmail.com> wrote:
> >
> > > Now that my SyncMaster monitor is confirmed working with 15Khz RGB
> > > I'm tempted to go for the WordPak2+.
> > > Luis, are you planning to share your design?
> > > thanks,
> > > Ken
> > >
> > >
> > > On Sun, Apr 6, 2014 at 12:41 AM, Gene Heskett <gheskett at wdtv.com>
> wrote:
> > >
> > > > On Saturday 05 April 2014 17:39:05 Retro Canada did opine:
> > > >
> > > > > a gbs8200 would do the job. must ask Roy if the vga converter
> > > > > does accept negative sync. otherwise you just need to mod and
> > > > > add a
> > inverter
> > > > > piggybacked somewhere and cut some trace
> > > >
> > > > And I can say, with a straight face, Roys is better, I had one
> > > > of
> those
> > > > till Roy came out with the 2nd version. Its in the scrap box now.
> > > >
> > > > > On Apr 5, 2014, at 2:43 PM, "Ken H." <dragon.atv at gmail.com> wrote:
> > > > >
> > > > > Looks great!
> > > > > It's amazing how you've managed to squeeze so much into a
> > > > > standard rompak case.
> > > > > For those of us without a 15Khz RGB monitor - would Roy's svga
> > > converter
> > > > > be able to convert your WordPak2+ output to VGA?
> > > > >
> > > > >
> > > > > On Sat, Apr 5, 2014 at 8:31 AM, Luis Antoniosi (CoCoDemus) <
> > > > >
> > > > > retrocanada76 at gmail.com> wrote:
> > > > > > The WordPak2+ using the first manufactured batch.
> > > > > >
> > > > > > https://www.youtube.com/watch?v=btTlrNovbc0
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Long live the CoCo
> > > > > >
> > > > > > --
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> > > > >
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> > > >
> > > > Cheers, Gene
> > > > --
> > > > "There are four boxes to be used in defense of liberty:
> > > > soap, ballot, jury, and ammo. Please use in that order."
> > > > -Ed Howdershelt (Author)
> > > > Genes Web page <http://geneslinuxbox.net:6309/gene>
> > > >
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> >
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