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midge
1 Posts |
Posted - 11/15/2009 : 11:38:28
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Right ive got a willem pcd5.0 programmer i bought it so i can copy eprom chips, the chips im trying to read/write are m27c256b, so i select 27c256, when i do a blank test it says device not empty even though these are brand new chips! so i took the chip out and done a blank test again, and i got the same thing, 'device not empty' theres no bloody chip init! when i go to the buffer after reading a chip that isnt there every field except the last long column is showing '04'
i think i have the jumpers setup correctly but im not to sure, and i cant find any instructions!
the prgrammer is a pcb50, however the software wouldnt work with it, so im using pcb3 software, and set the jumpers up to be on pcb3.
someone help me! im going crazy!
this is the programmer i have www.cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250515051754&ssPageName=STRK:MEWNX:IT
thanks for anyhelp |
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Reply #1
simeon
United Kingdom
79 Posts |
Posted - 11/16/2009 : 17:11:48
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if your stuck i can offer help on msn i have a dual power willem programmer and program many eproms for the retro computer scene its a great tool some need a few bits advice
you can email me your msn details to vsmlibs@talktalk.net and ill add you as msn can be a bit funny with new contacts sometimes or ill help on msn passport email simeon.webber@ntlworld.com
youll get me there i have flashed many eproms 27c cmos 27XXX nmos{most} even older 27C204 and 240 and 2048 plcc with no issues
ps never plug a chip in till you measure a few voltages using the apps test tools bit of advice an lcd volt meter is your chips friend and you its keeper use the tools make sure of things BEFORE plugging a chip in think of chips as soldiers and dont waist them over simple mistakes....! in all modes !!!! |
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 11/16/2009 17:15:50 |
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Reply #2
James B
United Kingdom
1 Posts |
Posted - 01/16/2010 : 11:58:13
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Midge, try software version 0.97ja. I had the same issues and it's finally solved mine. I have now been able to read chips, and blankcheck/program/verify/read 27C256 chips too.
It's here:
h**p://www.sivava.com/Software/MCUsetup97ja.zip |
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Reply #3
simeon
United Kingdom
79 Posts |
Posted - 01/23/2010 : 07:00:37
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hi
first clean the pins of the chip carefully i use flux and solder iron careully
next set the jumper on the right that says 5v and 5.6v to the middle to dock it there ie the jumper is off this is programming level vcc=6250 {best use ac supply for eproms i find}
use pcb5.0c setting and pcb5 app again version ja works for me but so did the one i got with the unit
the only eprom ive had trouble with so far are 27c1000 it appears so does the top programmer even with tweaks see's a bad chip at &1000 but willem does test blank but fails at $1000 so its something strange and defo an application error
256k was fine i use dual power willem blue pcb extra sockets on it for plcc on the right
as ive said before there are rules to programming and the jumper is one of them i find in read or write
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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 01/23/2010 07:02:31 |
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