[Coco] Adapting a V9958 64-pin Chip to fit a Solderless Breadboard

Tue Dec 3 03:28:40 EST 2013

Hi Everyone!
I'm fitting an actual size printout of the PCB layout to an actual V9958
chip in a few minutes, so all who would like this adapter, please put in
your orders.  The price will be determined as soon as I can find some SDIP64
sockets.  Any help securing some SDIP64 sockets would be greatly
appreciated.  These are the links to renderings of the front and back of
this adapter.
https://www.dropbox.com/s/33n2ps2i3nyj8dq/SDIP64%20to%20DIP64%200.300%20inch
%20Breadboard%20Adapter%20-%20front.png
https://www.dropbox.com/s/iltu1nygjwac6j9/SDIP64%20to%20DIP64%200.300%20inch
%20Breadboard%20Adapter%20-%20back.png
As you can see, I reduced the width of the normal DIP64 IC layout to 0.300"
to maximize the number of wires that can be connected to each pin.  This is
the same width as a 74LS00N Quad NAND Gate chip.  Take care my friends.
Kip

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Kip Koon
Sent: Tuesday, December 03, 2013 2:53 AM
To: 'CoCoList for Color Computer Enthusiasts'
Subject: Re: [Coco] Adapting a V9958 64-pin Chip to fit a Solderless
Breadboard

Hi Jim!
Can you can tell me where you found the SDIP64 sockets?  If not, would you
be willing to part with your supply of SDIP64 sockets if you don't need
them?  I would appreciate it.  
I believe I have finalized the design files for the SDIP64 to DIP64 0.300"
adapter.  Yes, you read that right.  I squished the pins from the width of a
normal DIP64 pin spacing to a width of 0.300" since this will be used on a
breadboard.  This should minimize the acreage used by the adapter and
maximize the number of wires you can connect to each pin.  If all goes as
planned, the pins that plug into the breadboard will be under the socket.
Cool Huh!  Take care my friends.
Kip

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Jim Harre
Sent: Monday, December 02, 2013 11:33 PM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Adapting a V9958 64-pin Chip to fit a Solderless
Breadboard

Hi, Kip -

I have 10 - 15 of those 64 pin sockets that I picked up for a Z180 project
that never went anywhere. They were hard to find, and as I recall, a couple
bucks apiece. The sockets are solder tail with no manufacturer's name or
mark (that I could find).

    <*> Jim

On 12/2/2013 9:04 PM, Kip Koon wrote:
> Hi Luis!
> I created a breadboard adapter sometime ago for the SDIP 64 socket 
> that the
> V9958 VDG fits, but I have not sent it off to be fabricated yet.  The 
> design files are finished I believe.  I need to check that though, 
> because I remember printing an actual size PCB layout and fitting the 
> actual chip to the printout like I usually do when finishing a PCB.  
> When I'm done with the design, would you like one?  I can finish it up 
> and get the PCB fabricated and have them available assembled or 
> unassembled as a kit.  I'll need to find 0.7 pin spaced sockets for 
> this PCB though.  I wouldn't want to have to unsolder 64 pins!  Ouch!
> You mentioned that you were considering the V9990.  I remember 
> something not being as good as the V9958, so the V9958 is what I 
> chose.  I don't remember what that "something" was, maybe it was just 
> the price of the chip at that time, I just don't remember.  I am very 
> interested in your Yamaha V9958 based VGA compatible Video Display 
> PCB.  Please let me know how you are doing with the designing of it.  
> Thank you for the design files for the 80 Column Video Display 
> WordPak.  I appreciate it.  Thanks a bunch.  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, November 28, 2013 2:25 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Adapting a V9958 64-pin Chip to fit a Solderless 
> Breadboard
>
> Hi Kip, did you have any progress on that ?
>
> After my successfully try with 80 column card I want to move to a 9958
one.
>
> I was think in soldering wires from an SDIP-64 socket but I'm having 
> problems even finding a sdip-64 socket.
>
> So I ultimately thought that i should make the prototype on OSD Park, 
> becasue if I had to solder 4, 5  evem 10 wires for fixing missing 
> connections that would be by far better than soldering 64 pins !
>
>
>
>
>
> On Fri, Apr 5, 2013 at 2:48 AM, Kip Koon <computerdoc at sc.rr.com> wrote:
>
>> Luis,
>> I have some disappointing news for you my friend.
>> The advertised chip in that ad is exactly the same chip I received.
>> All markings on my chip exactly match the markings in that ad.
>> Trust me, that is not a dip64 chip.  It is an sdip64 chip which 
>> stands for "shrink dip".  The pins are closer together.  They are spaced
0.07"
> apart.
>> The pins are not spaced 0.1" apart.  Even the advertiser is the same.
>> I don't think a dip64 version exists, unfortunately.  I wish it did.
>> The Technical data book only mentions a shrink dip version of the 
>> chip at the very beginning of the document.  It's a very interesting 
>> chip, I just need to interface to it somehow.  Thanks for the heads 
>> up though.  It was an excellent try.  The title of that ad is what 
>> lead me to read it too and ultimately buy it.  If you want a dip64 
>> version of this chip, this is not it.
>> Kip
>>
>> -----Original Message-----
>> From: coco-bounces at maltedmedia.com
>> [mailto:coco-bounces at maltedmedia.com]
>> On
>> Behalf Of Luis Antoniosi (CoCoDemus)
>> Sent: Thursday, April 04, 2013 3:34 PM
>> To: CoCoList for Color Computer Enthusiasts
>> Subject: Re: [Coco] Adapting a V9958 64-pin Chip to fit a Solderless 
>> Breadboard
>>
>> what is this ?
>>
>>
>> http://www.ebay.com/itm/IC-V9958-YAMAHA-VDP-IC-MSX-DIP64-NEW-GOOD-QUA
>> L ITY-1P CS-/300818499421?pt=LH_DefaultDomain_0&hash=item460a2e075d
>>
>>
>> On Thu, Apr 4, 2013 at 4:27 PM, Kip Koon <computerdoc at sc.rr.com> wrote:
>>
>>> Luis,
>>> There is a dip-64 version?  The V9958 Technical Data Book says it is 
>>> a shrink dip.  I'd love to get a dip-64 v9958.
>>> Kip
>>>
>>> -----Original Message-----
>>> From: coco-bounces at maltedmedia.com
>>> [mailto:coco-bounces at maltedmedia.com]
>>> On
>>> Behalf Of Luis Antoniosi (CoCoDemus)
>>>
>>> You can find the DIP-64 version of the V9958 (aka msx-video). Is the 
>>> same used on all msx2+ and Turbo Rs.
>>>
>>> On Thu, Apr 4, 2013 at 3:10 PM, Kip Koon <computerdoc at sc.rr.com> wrote:
>>>
>>>> Daniel,
>>>> This is a much clearer version than I have.  However, the V9958 
>>>> Technical Manual v1.0 only covers the differences.
>>>> You will also need the V9938 Technical Data Book at the following
>>> address.
>>>> http://www.msxarchive.nl/pub/msx/docs/datasheets/v9938.pdf
>>>> I have an excellent PDF of it, but I don't remember where I got it, 
>>>> so I'll email  to anyone who needs it.  I'll post it here when I 
>>>> find
>> it.
>>>> Kip
>>>>
>>>> -----Original Message-----
>>>> From: coco-bounces at maltedmedia.com
>>>> [mailto:coco-bounces at maltedmedia.com]
>>>> On
>>>> Behalf Of Daniel Campos
>>>> Sent: Thursday, April 04, 2013 9:26 AM
>>>> To: CoCoList for Color Computer Enthusiasts
>>>> Subject: Re: [Coco] Adapting a V9958 64-pin Chip to fit a 
>>>> Solderless Breadboard
>>>>
>>>>
>>>> http://primrosebank.net/computers/mtx/projects/mtxplus/V9958-Techn
>>>> ic
>>>> al
>>>> -manua
>>>> l_v1.0.pdf
>>>>
>>>> V9958 is used on the MSX2+ and TurboR MSX machines.
>>>>
>>>> Regards,
>>>> Daniel
>>>>
>>>>
>>>> 2013/4/4 Alan Jones <alwanbi at live.com>
>>>>
>>>>> Hi Kip,
>>>>> Can you point me to the data sheet for V9958 chip?
>>>>> I would like to take a look at it.
>>>>> Thanks...
>>>>>
>>>>> Alan
>>>>>
>>>>> -----Original Message-----
>>>>> From: coco-bounces at maltedmedia.com 
>>>>> [mailto:coco-bounces at maltedmedia.com]
>>>>> On
>>>>> Behalf Of Kip Koon
>>>>> Sent: Thursday, April 4, 2013 3:44 AM
>>>>> To: Coco Email List
>>>>> Subject: [Coco] Adapting a V9958 64-pin Chip to fit a Solderless 
>>>>> Breadboard
>>>>>
>>>>> Has anyone ever adapted a V9958 Video Graphics Controller 64-pin 
>>>>> chip with tiny spacing on the pins to fit a solderless breadboard?
>>>>> I was not aware of this very small pin spacing when I was 
>>>>> researching the chip.  I liked the chip's capabilities and at
>>>>> $6.40 a chip, the price was too good to pass up!
>>>>> This will take some doing.  I may have to compromise and use an 
>>>>> earlier chip.  Maybe the TMS9918 or TMS9928.  Were there any 
>>>>> others in that chip line.
>>>>>
>>>>> Were there other chip manufacturers with interesting Video 
>>>>> Graphics chips I should consider?
>>>>>
>>>>> Kip
>>>>>
>>>>>
>>>>> --
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>>>>> Coco at maltedmedia.com
>>>>> http://five.pairlist.net/mailman/listinfo/coco
>>>>>
>>>>>
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>>>
>>>
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