@Mikey_C
I did know that and I named both before I reached "to my knowledge"
. It's a good post and does cement OS4's link to 68k AmigaOS.
Heinz was responsible for the New Style Devices patch which was later incorporated into SetPatch. It can remap devices to other devices and provide a compatiblity layer with TD64. It is still in SetPatch and is mapping serial.device to sam440ep_serial.device here for old programs that are hardcoded to serial.device (this is pretty much the only thing SetPatch does on the SAM, I imagine Classic Amigas get patched a lot more)
Olaf is best known as the author of Roadshow (OS4's TCP/IP stack).
We should be proud to have both on our side.