Ascend Archive
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Re: (ASCEND) Bad Flash rom ?

damage doesn't always mean destroy.. i'm sure that the person on the other
end of the phone meant 'currupt'. if the flash is currupt, the unit won't
boot unless you wipe it by pulling the jumper then upload new code.

PS if the image is too big it will wrap arround to location 0 and start to
write the last edge of code over the first few sections.

Leon McCalla
-----Original Message-----

>    Can someone explain to me how loading an image into a flash rom which
is
>too big for the rom can damage it ? Remembering back to my Computer
Engineering
>courses back in my college days I seem to remember a few minor tidbits
about
>flash roms, or EEPROM's as we called them. The biggest thing was they were
good
>for many re-flashes, like 1000 or more. But yet the second time I flash
this
>P-50 (which is 30 days out of warranty) it pukes and I'm told I loaded too
>large of an image using tftp. Now I understand from the explanation of the
>tech.supp. person that I should have used a serial download straight to
version
>6.0. But I do not understand how not doing so will damage the flash rom.
Its a
>chip that when a certain pin is held hi, accepts input and retains until
>another line is held hi. So where does it get damaged? Does the P-50 freak
out
>if it gets too much data and shoot 18 VDC down the input side or what ???
>    This sounds like poor engineering anyway you go about it. My computer
>certainly doesn't need a RMA number every time I try to install a program
and
>run out of hard drive space. I might get the "blue screen of death" but I
hit
>the reset button and everything is back to normal. Can you imagine if I had
to
>RMA my computer each time I used all the available RAM ?
>
>
>-- Tim Connolly tec@mountain.net     MountainNet, Inc.
>-- (304) 594-9075 ext. 37            2816 Cranberry Square
>-- fax (304) 594-9088                Morgantown, WV 26505
>-- ICQ:601237 '94 Kat 750
>
>-- One third of America's planned Space Shuttle missions are military.
>-- "Advanced Technology Warfare" Crown Publishers NY,NY
>
>
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