Select Monitor Cartridges

[b3lha]

Sombody sent me a copy of the Select Monitor Cartridge for the 92 SVX. I have now analysed some of it and documented it on my website. I haven't documented everything I know yet and I still have a lot more work to do, in particular analysing the decode functions.

http://www.alcyone.org.uk/ssm/selmon.html

[seport]

Hi Phil,

I hope you found a new job

Is the SSM documented in your website for the first model or the second one which you have a picture of it in your website?


http://www.alcyone.org.uk/ssm/ports.html

I have just bought one (the MK2 type) from e-bay and received today. I will start to play with it in the coming weeks and hopefully I will try to eavesdrop the parameters of my car and see where we went good and wrong.

Regarding your circuit to connect the SSM with the PC,
http://www.alcyone.org.uk/ssm/eavesdrop.html
Do you think it is possible to work with a 2 way switch instead of changing the connectors to first read the SSM and then the car?

[b3lha]

Hi Alexander,

Nice to hear from you. I've just been offered a full time job reverse-engineering ECUs. When I submitted my application, I included some links to this forum. The company was impressed by the work I did for you, so I should thank you for asking me to look at your ECU.

I don't know which type of select monitor the cartridge is from - I haven't seen it. My contact just emailed me the ROM dump. I assume he unsoldered the chip from the cartridge and read it with an EPROM programmer. It is from 1992, so I assume it is an early type.

The eavesdrop circuit should work with a 2 way switch. I will be very interested to hear your results. Please post any information you discover.

Phil.