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

[Rich Miller]

Hi Bob:

I just wrote Mike, to let him know you had located a 39VF040. I thank the both of you for checking into this for me. My callsign (AJ3G) is good in QRZ, but the address is:

Rich Miller
9005 Vernon View Dr, 
Alexandria , VA 22308

As I stated in an earlier email to Mike (KD7TS), I hope this turns out to be the issue with my DSP-10. I was finally able to get the PLL problem partially resolved, but it would return typically after making a RX to TX transition. The PLL Unlock was not the only problem I would see on the transition, I would also get some pretty weird DAC indications after some of the transitions , but not all.

I had thought maybe the FCI connectors I used on the header pins were not tight causing an intermittent problem, but I have since tack soldered the pins to the header. If the monitor is not the issue, than the only thing I can think of is the ADSP-21XX. 

Just out of curiosity, is it possible in your opinion for a DSP-10 to partially run with a corrupted monitor? I really can't find any fault in any of the other parts of the RF Chain on the main board. When serial programming works and programs the shift registers, then the PLL's work great. 

73

Rich, AJ3G

> On Dec 3, 2015, at 12:47 PM, Bob Larkin <boblark at proaxis.com> wrote:
> 
> Hi Rich,
> 
> I had a chat with KD7TS and W7CQ this AM, relative to flash chips.  I hunted about and I have several that are programmed with v2.95 of the monitor.  Send me your mailing address (off the reflector, if you want) and I will send you a new monitor.
> 
> 73, Bob  W7PUA
> 
>> On 12/03/2015 04:30 AM, Richard Miller via DSP-10 wrote:
>> 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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