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PostPosted: Fri Oct 26, 2018 10:17 am 
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Joined: Fri Oct 26, 2018 9:59 am
Posts: 3
Hi everyone!

I've just finished up work on some PCB designs and thought some of you here might be interested in them. I've got a handful of designs that I will be posting over the next couple of weeks but here is the first:

Image

These are for 8Mbit Hirom or Lorom reproductions using the popular M27C801. This is especially handy for those who only have the popular Tl866 programmer as larger EPROMs are not supported. They come with Super CICs preprogrammed and soldered on as well as the capacitors so all you have to do is program the 801 slot it in and solder it. No swapbinning, no PIC programming, no wiring required. It's a huge time saver!

Here is a video of me demonstrating their use to a friend of mine:
https://www.youtube.com/watch?v=755b3Vt ... e=youtu.be

I've got a small batch of them on Etsy here:
https://www.etsy.com/listing/605289223/ ... e_active_1

But I'm getting ready to place a much larger order very soon so if you are interested in this or other boards please let me know so I can more accurately order.

There is space on the boards for various LEDs also for transparent shells, I plan to assemble some with and without these. I also am finishing the final touches on a PCB that uses the 801 but also supports up to 256K of RAM for save states, a board that uses the M27C160 EPROM for 16Mbit games, and another that uses M27C322 with built in decoders and up to 256K RAM all coming very soon.


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PostPosted: Fri Oct 26, 2018 11:29 am 
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Joined: Sun Apr 13, 2008 11:12 am
Posts: 7714
Location: Seattle
darcoza wrote:
But I'm getting ready to place a much larger order very soon
It might help you save a few pennies to use my port of the supercic key to the pic10f322, which is a little smaller.

Also, 27c800s are really amazingly expensive :( it might be worthwhile to include with solder jumpers to support the SST39 series of flash.


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PostPosted: Fri Oct 26, 2018 11:47 am 
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Joined: Fri Oct 26, 2018 9:59 am
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Wow! Thanks for the tip on the 10f322 I may have to make another revision to start using those in the future! and being able to program it through the cart slot would be super convenient!

Can you tell me a little more about these SST39? How much can they hold, what packages do they come in, operating voltage, and general price range? And can they be programmed on a TL866?

I can usually find M27C801s for about $2 and M27C160s and M27C322s for $1 are these that much cheaper?

Sorry for all the questions you just have me intrigued :) If these meet my design goals then I may have more versions I need to design quickly!
Thanks!


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PostPosted: Fri Oct 26, 2018 12:10 pm 
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Joined: Sun Apr 13, 2008 11:12 am
Posts: 7714
Location: Seattle
darcoza wrote:
Can you tell me a little more about these SST39? How much can they hold, what packages do they come in, operating voltage, and general price range? And can they be programmed on a TL866?
SST39SF010A, SST39SF020A, SST39SF040. 128KiB, 256KiB, 512KiB. DIP, PLCC, TSOP. 5V. Prices on the order of 80c/ up to $1.40/. Yes.

Cheapest prices are often direct from Microchip.

Quote:
I can usually find M27C801s for about $2 [...] are these that much cheaper?
Apparently not. I'd heard much worse prices for the 27C800s.


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PostPosted: Wed Oct 31, 2018 1:47 am 
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Joined: Sun Nov 23, 2014 12:16 pm
Posts: 274
If I paypal you $5 can you send me one single PCB? I live in USA.


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PostPosted: Wed Oct 31, 2018 5:54 am 
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Joined: Fri Oct 26, 2018 9:59 am
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The problem with selling only one board is that it costs about $3.50 to ship these in a padded envelope, so selling just one at $5 is a loss.

That leaves two options however, if you really just want one I can sell it to you for $8.50 to cover the shipping, or if you're willing to risk it, it can try shipping one of these in a regular envelope for a stamp. I haven't tried sending these this way and so I can make no guarantees about what might happen to it, and it won't have any sort of tracking or anything.

If you want to risk it we can try it :)


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PostPosted: Thu Nov 01, 2018 11:33 pm 
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Joined: Sun Nov 23, 2014 12:16 pm
Posts: 274
darcoza wrote:
The problem with selling only one board is that it costs about $3.50 to ship these in a padded envelope, so selling just one at $5 is a loss.

That leaves two options however, if you really just want one I can sell it to you for $8.50 to cover the shipping, or if you're willing to risk it, it can try shipping one of these in a regular envelope for a stamp. I haven't tried sending these this way and so I can make no guarantees about what might happen to it, and it won't have any sort of tracking or anything.

If you want to risk it we can try it :)


Yeah, I don't think I need padding for anything fancy just a regular envelope, I just want to check out the board itself. Send me a PM with your paypal e-mail. thanks.


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