[Diy_efi] Lucas Hotwire checksums

[Davis Performance Landys P/L]

Hello to all as I have just joined this list. I am a computer programmer 
and ex-mechanic who is currently adapting the Rover Lucas Hotwire ECU 
(14CUX with what appears to be a ZC93116CP Motorola processor) for use in 
an old series 3 Land Rover. I have built an EPROM emulator and have written 
simple software to allow me to edit the fuel maps successfully.My problem 
is that when I 'burn' a chip (m27c256b) and install it I am getting 'ROM 
memory error' when the car is run. The vehicle runs OK but occasionally 
plays up after the error is thrown. I am sure this is a checksum error and 
know that it is likely that the algorithm to calculate it is proprietary. 
Does anyone have any information regarding this.

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