Electronics Today International (ETI) "System 68" firmware

Does anyone out there remember the "System 68" project that ran as a series in the UK magazine Electronics Today International (ETI) during 1977? I built this when I was young, but unfortunately all my early hobby stuff got slung out when my parents moved house. I have managed to re-create most of my "lost" issues of the magazine, including the ones covering System 68, which was a simple M6800 based system with a memory mapped VDU. Now, here's the question - does anyone out there remember this project and, if so, would anyone happen to have a listing of the monitor firmware? I believe the firmware for this system was derived from the Motorola MIKBUG monitor, modified to suit the different hardware. I want to re-building this system, but so far have been unable to locate the necessary firmware. Hoping that there is a someone out there that might be able to help out! Thanks Nick