Repairing LS1 pcm.

[Drew]

Hello all

Just in the process of repairing the flash on a LS1 pcm. I intend to fit am29f400bb flash memory but have noticed a slight difference in the pinout.
Will EFIlive still read and write to the new flash memory once I purchase a licence?

Thanks

[joecar]

What is the difference in the pinout...?

What was the flash part previously on the board...?

[doubledip]

Hello all

Just in the process of repairing the flash on a LS1 pcm. I intend to fit am29f400bb flash memory but have noticed a slight difference in the pinout.
Will EFIlive still read and write to the new flash memory once I purchase a licence?

Thanks

which PCM is it?

[Drew]

The original was the Intel AB28F400BX.

The pinout difference is in pin 1 and 2.

Pin IntelPin AMDPin Description
1 VPP NC Program/Erase Power
2 WP# RY/BY# Write Protect Input (Intel) /
Ready/Busy Signal (AMD)

Having a look through the data sheet looks like the programming and erase commands are diffrent too.
There is some good info about it here http://www.datasheetarchive.com/inde...SAE0070163.pdf

[doubledip]

why you changing type of chip ???

[Drew]

which PCM is it?

VT with a service number of 09354896

[Drew]

Looks like the chip has been off it a few times before. Board cleaned up ok but the chip has see better days. And im having problems sourcing the intel part.

[doubledip]

need to fit same chip.. the AB29 wont work (AFAIK)

[JezzaB]

Yup. Ive tried putting one on years ago and it didnt like it.

[Drew]

hmm so the reading and writing with EFILive was the issue JezzaB?