Just some previous background, since my original DSDT that worked great. I added additional ram and a SN850x nvme and updated the bios (so not sure exactly what caused the issue).
Mac OS then would not boot, and displayed the 'stop' sign error.
I was able to boot fine once I removed the previous DSTD and replaced it with the basic/stock SSDT file.
I have attached the runme file.
Send me Mac-Daddy.zip