Re: Resending: Repairing a SFD-1001 (8250/LP, 8050, 4040, 3040, 2040)

From: Jim Brain <>
Date: Tue, 09 Aug 2011 22:14:27 -0500
Message-ID: <>
On 8/9/2011 9:48 AM, Steve Gray wrote:
> Hi,
> Excellent email. Thanks for re-sending!
> A while ago I discussed creating a replacement RRIOT with Jim Brain. We came to
> the conclusion that it would be possible to create an adapter with 6532 chip
> that is about the same size as the socket by using a small surface mount FLASH
> ROM underneath, thereby making it universal to any drive. A flash rom would make
> dip switches unnecessary and the whole thing a lot smaller. Unfortunately that's
> about where it ended, since demand for such an adapter was unknown and Jim's
> time is understandably limited.
Please don't take this post to diminish WoMo's efforts.  But, I'm now 
less concerned about demand for such an adapter, so I'll commit to 
running a 100 of them, provided someone will commit to handling the 
Verilog/VHDL for the CPLD.  (If it can be done in a GAL or two, so much 
the better, as it's hard to find 5V CPLDs at reasonable prices.

I'm happy to design the board (CPLD/GAL, FLASH, HEADER), and program it 
with the variations (I can also design a board with a JEDEC style EPROM 
socket so folks can drop in their own ROM files).

But, I just don't have enough expertise with HDL yet to commit to that 


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Received on 2011-08-10 04:00:12

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