using 87c256
using 87c256
I have a VN computer with what I assume is a 87c128 eprom. The first memory location appears dead as it always reads as FB, no matter how long I cook it in the eraser, the rest of the buffer shows all FF's. I have a supply of 87c256's. Can I just swap it over and I believe I need to write the bin twice or double it up or something.
Re: using 87c256
Its not 87 its 27c128
Re: using 87c256
Sorry, that's what happens when you start typing before engaging your brain.
Re: using 87c256
Yeah just stack the bins 0000 -3fff 4000 - 7fff
Re: using 87c256
Thanks, I'll give it a go.
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Re: using 87c256
Or if your programmer supports it just load it once starting at 4000 - The ECU will never address the 0-3FFF area of the EPROM so its not required unless you want to have switchable maps.