I recieved in the mail all of my equipment. I also recieved a bag full of Prom non erasable M27c256B chips.... What should I look for in a chip to work with my computer correctly, and what do the letters before the 27C256 mean...??
Paul

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90 Red Convertible
100k running great
ZAINO!!!
383 Stroked.... LT4 Hot Cam... Forged Elgen Pistons Scat 9000 Crank Elgen 5.7" rods New Lifters w/ 1.6 Rockers and hardened Pushrods Super Ram Intake Hooker Headers and Y pipe into Gutted Cat with Monza Mufflers (WAY TO LOUD!!) Adj Regulator K&N Shift Kit High stall converter 160 termo, ZR1 Rims.... Red Calipers....Alpine head unit, Kenwood 6x9 4 ways, Polk DX 6 1/2 compnents, MTX 240 amp, Viper 550 alarm,


www.corvetteforum.net/c4/nomar116/

 

Those letters refer to the manufacturer (ie AT = Atmel). The AT29C256 EEPROMs are the flash proms that everyone is using...... they need to be 28 pin DIP and I am not really sure which speed is ideal but I am using 120 nano-second ones.... The part number should look something like this: AT29C256-PC12-ND

Hope that helps as i am no expert on this but this is what I am using...... - successfully now !!

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

 

The m27c256b is the same chip I am using on the Mercedes. I use the plain 27c256 designation in the win software. All of mine are working well now.

PS, I did have a problem with some faulty chips that were sent to me. I ordered some different ones and all is well now.

When done, be sure to hit the verify key to make sure the chip and the buffer are the same.