Have managed to boot Mos up?
Sorry, not really. Found on amiga-news a describtion how to get a serial bug output, but it did not work... I think 115200 is too fast for an A4000 and the serial device...
Tried many things from the threads above, always the same result, a black screen.
Tried debugramdump, but where to write the file???
Writing the file to the mos partition did not work.
Tried to boot from scsi cdrom -> copy image on harddisk, changing startup-sequence to cd0 as bootdevice and setting reset level to 5. Burning this data using makecd on an emty disk -> my system tries to boot from disk, after that os3.9 is loading...
I think I will give up, mos did not like my A4k?