Stepped on PROM dumps
CSH-HQ
nacelp at jvlnet.com
Mon Aug 16 09:21:35 GMT 1999
Geeeez, I'm impressed, how anyone catches that stuff is ammasing.
I think there are others floating around with the same error.
Bruce
>Wow Ludis,,,great catch.....I imagine there could be some very frustrated
people out there that have tried to use that.......great work
>-Carl Summers
>From: Ludis Langens [SMTP:ludis at cruzers.com]
>Sent: Sunday, August 15, 1999 11:52 PM
>To: gmecm
>Subject: Stepped on PROM dumps
>
>The following five '7747 PROM dumps from the diy_efi web site each have
>one trashed byte:
> anlz5483 Aksn Akal azft9503 asdz9578
>
>The last byte of each dump is supposed to be 0x96. In these five cases,
>it is 0x00. Fixing this byte makes the sumcheck come out correct.
>
>The 0x96 is a LDAA opcode in the INTegrator fuel adjustment function.
>If this byte is not fixed (but the sumcheck is), the ECM will keep
>pulling out fuel as if the INT has gone all the way to zero.
>
>--
>Ludis Langens ludis (at) cruzers (dot) com
>Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/
>
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