MCUmall EPROM BIOS Chip Burner Forum - another eprom at least fix latest ver of soft

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another eprom at least fix latest ver of soft

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simeon

United Kingdom
79 Posts

Posted - 01/06/2010 : 14:30:49

hi

i use a top 2049
and i reflowed it using my smd reflow unit last week
i do this with laptops mainboard and ps3 xbox etc
so far i think ive fixed about 300 total failures units
no boots beeps or irratic behavoir
if you have a strange fail main motherboard
sit it flat as you can do the underside away from big package first
wait 20 mins till cold
turn it over and add a 5p 1cent or something small in dia coin
on top of the bga/pga chips in there center to add some protection from harsh heat and a little weight
and hot air them back on @375 deg c dont wait around with the air
spread it about evenly at the sides or overall
of packages and green rims of bga bridge controllers
and video chips {also cards chips !!!!! if you have a failed card !!}

also do the support ic's wait again 20 mins
and re-assemble

all else fails instead of talking just blow hotter air at it

so....the top...
i used the latest software !!!
from www.top2048.com

{with win xp you must go to the device manger and the windriver tab and replace the driver with the one in the driver folder
C:\Top\Topwin6\driver\xp
seems there installer has trouble to update drivers
even if you remove and reboot first
the dos window states files already exist and are locked
so doesnt overwrite them so there is a need to manualy add them

like unplug the programmer

now go to the control panel
choose
system >> hardware >> device mangager >>jungo>> windriver >> driver tab >> update driver >> install from a list or specific location >> dont search i will choose the driver to install..>>have disk.. browse for it in C:\Top\Topwin6\driver\xp {ok for win98 -xp} or C:\Top\Topwin6\driver\vista {ok for vista and windows 7}
as needed

it will eventualy show you
'windriver' with no date

choose next the machine will set a restore point and install it

reboot !!! and then once the o/s is running
plug in the programmer
and wait 30 seconds then run the front end

this will fix the driver

even is you uninstall the older one and reboot
some files from it remain locked
and this step is needed
there is also a note of this in the top site...

i noticed this top2049
there is very little solder on some ic's!!!!!
hand solder of some buffers was needed using an eye loop X20-mag
two dry joints on psu caps found

ive written many times about eproms
lately ive gone back to the top
and find with the latest software its much better with eproms
100ns / 120ns cmos eprom types set delay = 100us
150ns eprom types or above types set delay 200us
255ns eprom types or above types set delay 1ms
dont forget to chill the eproms in the freezer to 0c or so... for best fix of electrons... cell weighting
and also MOST IMPORTANT ~I THINK FOR ANY VPP IC
if a write fails... sometimes !!!!! using c1000 but not with failed good known types {bad delay doesnt need a reset as below
the software as is fails to reset propely
all part ie the software drivers buffer and programmer

so... try this or further programming will also fail i find
close the software
disconnect the programmer

wait 25 seconds
reconnect the programmer
start the software
and set it all up again
with a new eproms
erase the eprom that failed and try it at a lower or higher delay

as for the willem it writes most
but the top at this point has written more of them
the willem has trouble with 1001 ic also 010
in some delay ranges { i think its the current each uses from vcc 6.5v

and dont forget to add the ,vcc=6250 for cmos
however ive been using 6500 for eproms period
and it seems aok so far
only 15 fails in 100 runs

so not bad
the ones that failes i managed 10 further
and found the other 5 had dirty pins
so used a glass fibre burnish pen to clean the pins

so im please to report 100 out of 100 in the end for the top2049
with eproms for 27cXXX types all is fine

i take it back

youll find in previous posts ive made
a listing to overwite the ??? range with eproms
and the top2049.cfg file
read these post
i feel although this programmer isnt well documented
this can be fixed
and make many people with top's happy

with just a set of friendly .cfg files
ill post a set of updated for all for eproms as a zip
i think it will only need updated once every so often

tonight i programmed over 100 eproms with 35 fails
10 ic's gubbed somehow
and 25 bad delay or bad erase vcc limits...i think
a further erase restored another 19
so a further 5 programmed on the willem
leaving 1 {dont know}

but i found the
0} erase for 5 mins
1} burnish the pins of all ic's using a glass fibre burnish pen
2} chill to 0C and blank check
3} choose the delay based on a magnitude of the chips refresh ie -10 is 100ns so 100us delay in the config panel
4} after a blank check or other loading etc usage
let a little time 10 seocnds for the app to settle before programming
5} unplug all non needed usb units using the same controller as the programmer {each controller usualy has two ports
most mainboards have 2 4 or 6 ports so 1 2 or 3 controllers
so avoiding mice and keyboard on the same one of two is a must

and thats it

nmos seems to be very similar to cmos and seems need twice the delay
so for a 100ns chip you need a 200us delay as for cmos for a 100ns chip you need just 100us delay set in the config menu setting
any nmos ive used seems quite happy to flash at 1ms delay

i hope i helped

ill prepair another paste in epr section for all .cfg files in the top software

i know my eproms so its no sweat !!! and simple script

machine toshiba equium laptop usb only type
p5b asus main machine
thinking of adding dual lpt pci card
both used for top and lpt via usb where i can

old p2 programming grumbling tank with xp sp3 for true serial and lpt

all machines bios set to enable bios plug and play aware o/s and lpt spollers services and drivers removed
legacy detection enabled

Edited by - simeon on 01/06/2010 19:40:15

Reply #1

simeon

United Kingdom
79 Posts

Posted - 01/06/2010 : 18:32:34

seems the only eproms now will issues for me anyway is
27C1000 i cant get any speed of them to flash

so 1000 is gubbed

ive made so far

C64 c256 c512 c1001 c010 c020 c040
not c1000 not c100

the same with willem dual power software {latest}
seems an issue???
only 1000 types are wrong now!!!

if i try to blank check c1000 types
i get a error at $01000

Edited by - simeon on 01/06/2010 18:33:32

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