[Coco] Announcing 512KB Static Ram Memory PCBs Using Through Hole Chips

Thu Mar 12 02:19:52 EDT 2015

Hi Brian,
This 512KB Static Ram Memory Upgrade uses all static ram chips instead of dynamic ram so no refresh is needed and it runs much cooler.  I designed it with all through hole parts.  I ran it all night the other night and the next day when I checked the Coco 3's top vents, I barely felt the slightest heat at all.  I had about 20 shells running (accidently) and two shells disassembling BASIC09 over and over with a self-calling command file.  If I might say so myself, this 512KB Static ram memory upgrade board in my opinion is very stable and rock solid in its performance.  
The dynamic Ram 512KB 30-SIMM memory board always gave me some type trouble with one of my customers who I was using as a test bed.  Therefore I decided to make a Static ram version instead plus I need some for my Coco 3s that is very stable and very cool to run.  I have some old 512KB memory upgrades running in 2 of my Coco 3s and they run way too hot.

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 Brian Blake
Sent: Saturday, March 07, 2015 12:40 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Announcing 512KB Static Ram Memory PCBs Using Through Hole Chips

Kip,

How different is this board from the one I got off you to test (you know, the one I never got around to)?

I'll take at least one of the new kits.

Brian

------------------
www.tandycoco.com
www.tandycoco.com/forum
On Mar 7, 2015 11:40 AM, "Kip Koon" <computerdoc at sc.rr.com> wrote:

> Hi Guys,
> Thank you so much to those who have already expressed an interest in 
> the 512KB Static Ram Memory Upgrade PCB and to those who have already 
> made an order.  I really appreciate it.
> I tested this new 512KB Static Ram Memory Upgrade PCB all night last 
> night by running 2 shells disassembling Basic09 in separate windows.  
> This morning when I woke up I checked the case to see if it was overly warm.
> The great news is I could barely feel any heat at all!  I checked the 
> monitor to make sure both tasks were still running and they were still 
> disassembling BASIC09 to beat the band!
> I made a self-calling command file to do the disassembling job and to 
> make it automatically recurring.  This morning I stopped one of them 
> and ran procs.  I saw about 20 shells running with an mfree of about 
> 224KB!  So I actually had a bunch a tasks switching back and forth!  
> Cool1  The test was better than I had hoped for!  I'm not sure how all 
> the shells started because I was running only 2 shells in 2 windows 
> last night.  Hummm... that will be for another day to figure out.  
> Suffice it to say, this baby stays pretty cool.  Remember those tiny 
> fans Pentium processors used to have mounted on top of them?  They 
> barely covered the Pentium processor and both the heat sink and fan 
> both were very short indeed!  Well, that is all it would take to keep this new 512KB Static Ram Memory Upgrade PCB ice cold!
> Even without it, the Coco 3 is still cool.  Only a very light hint of 
> heat at all.  I just thought you guys might want to know this.  :)  
> Thank you all for your time and interest in this project.  I really do 
> appreciate it.  Take care my friends.
>
> 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 Daniel 
> Campos
> Sent: Saturday, March 07, 2015 6:27 AM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Announcing 512KB Static Ram Memory PCBs Using 
> Through Hole Chips
>
> Hi Kip,
>
> Please, put one 6809 6 chip kit for me and one of those 512Kb 
> expansion as kit too!
>
> Daniel
>
> On 07/03/2015 01:54, Kip Koon wrote:
> > Hi Zippster,
> > I sure do.  The links below show the PCB installed in a Coco 3 and 
> > the
> other two show bare PCBs.
> > This picture shows the PCB fully assembled and installed into a Coco 3.
> > https://www.dropbox.com/s/7vmpkre4u5ki4gu/Pic_0306_402.jpg?dl=0
> > The next two photos show bare PCBs.
> > https://www.dropbox.com/s/5lajoquiqdf2z9x/Pic_0306_404.jpg?dl=0
> > https://www.dropbox.com/s/pkrdn8d56s4t8sd/Pic_0306_403.jpg?dl=0
> > This product is fully functional running 512KB DECB applications as 
> > well
> as running NitrOS-9 L2 perfectly.  No problems so far.
> >
> > Kip Koon
> > computerdoc at sc.rr.com
> > http://www.cocopedia.com/wiki/index.php/Kip_Koon
> >
> > 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 
> > Zippster
> > Sent: Friday, March 06, 2015 11:19 PM
> > To: CoCoList for Color Computer Enthusiasts
> > Subject: Re: [Coco] Announcing 512KB Static Ram Memory PCBs Using 
> > Through Hole Chips
> >
> > That is awesome guys!  For The CoCo3, right?
> >
> > Do you have a pic of your prototype?  I’d like to see how it’s laid out.
> >
> > - Ed
> >
> >
> >> On Mar 6, 2015, at 9:38 PM, Kip Koon <computerdoc at sc.rr.com> wrote:
> >>
> >> Hi Guys,
> >>
> >> Sylvain Rousseau and I would like to announce the availability of 
> >> 512KB Static Ram Memory PCBs implemented with all through hole parts.
> >> Each fully assembled PCB is $55 or Kits are $45.  Bare PCBs are 15 
> >> dollars.  These prices require 20 PCBs to be ordered from the 
> >> Fabrication house.  Otherwise, the prices for multiples of three 
> >> will come into play.  Send funds and physical address to my paypal 
> >> email address which is
> >>
> >> computerdoc at sc.rr.com.
> >>
> >> If I can order these PCBs as well as the 6 Chip 6809 Computer PCBs 
> >> together in the same order, only 10 of each kind of PCB will need 
> >> to be ordered as I only need a total of 20 PCBs to get these 
> >> prices.  If I can get all the orders in, PCBs ordered, PCBs 
> >> received, parts ordered and received before the CoCoFEST, I will 
> >> bring all this to the CoCoFEST otherwise I will mail the kits out 
> >> first then assemble and mail the finished PCBs.  Get your orders in 
> >> soon so you can start
> having fun!  :)  Take care my friends!
> >>
> >>
> >>
> >> Kip Koon
> >
> > --
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> >
> >
>
>
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