SpritesMind.Net

http://cgi.ebay.fr/Seltene-Sega-Mega-Dr ... RCH:FR:101

Very interesting item...
I saw a lot of flash-cart-debug-enabled but not debugger at the level of the 68k

Does anyone know this one ?
Are you able to see what this cpu-on-cart do exactly ?

that CPU card allows you to single step through code and see crash addresses etc. Not too useful but can be fun to have.

Technically, you can make your own cartridge with the processor. If you use a large CPLD (or even FPGA), you can add a link to the PC and the shadow ROM (and RAM too) with exception handling code. This will give service like ICE. The main thing - it is not necessary to rework the main PCB of console. So, I think this device is "must have" for me. :3 But delivery to my country costs more than device's price, LOL. It's a pity.