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27c256 failure (was Re: Anybody read Tom Fox's book? I NEED HELP!!!!)

Did you tell the programer you are loading from an S19 file? if dont set that you will get random blinking lights, and the program will load. If you are using the...

27c256 failure (was Re: Anybody read Tom Fox's book? I NEED HELP!!!!)

Speaking of 27c256... has anyone else had a problem where their 27c256 can't be properly read by the HC11? Maybe this is the issue being discussed here, and I'm jus...

27c256 failure - solved

Thank you to everyone who replied to my e-mail about my 27c256 failures. After considering all of the suggestions, and trying quite a few of them, the only th...

Re: HC711 pinout   [7 Articles]

Mike Phillips wrote: > Mine is the plcc 84. Yes, I see that you actually posted that information in your first message. Sorry to overlook that. > I'm not troubled at all ...

Re: Re: 27c256 failure

We used to use a lot of these. I had a file full of 'all zeros' I could burn into a rom that wouldnt verify to see if it had a stuck bit. It would program ok if b...

Re: Anybody read Tom Fox's book? I NEED HELP!!!!

27c256 --- In , Michael Bennett wrote: > exactly what r u trying to program > > > ncnghtstkr wrote: > What ar...

Programming 68HC711E9

I have 100 of the 711E9 mask described in http://www.freescale.com/files/microcontrollers/doc/errata/MSE711E9_4K81H.pdf and all attempts to write code into t...

Re: Re: 27c256 failure

I just tried the "all zeroes" approach, and four out of four devices programmed and verified with all zeroes in the EPROM. I had one that failed blank check before ...

Re: Re: 27c256 failure

To answer John's question: Yes, the window of the EPROM is covered with black electrical tape. I've found this to be a particularly useful way to do it, since th...

RE: Re: 27c256 failure

To follow Calamity Jane, check for cold solder joints. They are notorious for working an amount of time and then failing without explanation. Emmett Redd Ph.D....

Re: 27c256 failure (was Re: Anybody read Tom Fox's book? I NEED HELP!!!!)

At 09:07 PM 30/08/03 -0700, you wrote: >Any light that anyone can shed on this would be greatly appreciated. > Speaking of light...you DO have the eprom's wind...

Re: Re: 27c256 failure

I had this problem with eproms for other micros years ago. I found a couple of solutions that worked for me: 1. GOOD ERASE - Leave the eprom in the eraser for 3x...

Re: 27c256 failure

It sounds like "it's running on FFs". Did these chips work before and don't work now (in this same board)? If it's the first time around in this board, thes...

Curious Failure   [3 Articles]

Had an ATMEL 27C256 OTP spontaneously failed after ~3 days. I read back the prom, and compared it to a known good one, and discovered about 56 bytes that were no...

Re: Re: HC711 pinout

Mike Phillips wrote: > If I got this right, the constants and variables are loaded into the > eeprom in the k4 version of the hc711. The main vehicle program is > loaded into...

Re: Re: HC711 pinout

----- Original Message ----- From: "Mike McCarty" To: Sent: Wednesday, August 16, 2006 2:14 PM Subject: Re: [m68HC11] Re: HC711 pinout > Mike Phillips wrote: > > ...

Re: Re: HC711 pinout

----- Original Message ----- From: "Mike McCarty" To: Sent: Wednesday, August 16, 2006 2:14 PM Subject: Re: [m68HC11] Re: HC711 pinout > Mike Phillips wrote: > > ...