[DSP-10] HEY !! Bob !! Re: Corrupted Monitor on DSPx

[Richard Miller]

Hi Mike:
I am afraid I do not have a separate monitor. If you could find the other one, I could try an copy it. The programmer I have will not work for this type of device, as it was designed for PIC's. I have been looking into obtaining one which will work with these types of flash devices, as I need to store the CAL parameters of at Tektronix 2440, which are stored on Dallas NVRAM (also 70ns devices).  
After review, the 39VF040 is pretty inexpensive (Approx $2.10 from Mouser) ; so maybe I could expedite my search for a programmer and make a couple copies for safe keeping.
73
Rich, AJ3G
       From: kd7ts <kd7ts at comcast.net>
 To: dsp-10 at mailman.qth.net 
 Sent: Wednesday, December 2, 2015 11:09 PM
 Subject: [DSP-10] HEY !! Bob !! Re: Corrupted Monitor on DSPx
   
On Wed, 02 Dec 2015 19:19:09 -0800, Richard Miller via DSP-10 <dsp-10 at mailman.qth.net> wrote:

> All:
> After doing some digging around, my monitor has finally corrupted. I am not sure if I was having trouble in Flash Bank 0 which caused the issues I was seeing or not. The question is, is this repairable, or is it time to purchase another DSPX board?
> 73
> Rich

Hi Rich,

Yes, it's repairable by replacing the flash chip, or reprogramming it. If you have a 39VF040 with a monitor it is possible to copy the monitor from one chip to the other without a separate programmer.

It has been a while since I looked at this stuff, but if memory serves there is a way to read the checksum of bank0, but maybe it requires a good monitor.

I have one stashed in a safe place ... If I can find it, I can mail it to you. I owe someone for this as it was supplied to me by Jimmy, W7CQ to replace mine when I screwed it up.

Mike KD7TS


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