RDOS is not bound to PC hardware. It can run on all 386+ based systems. The standard kernel can be used if the PIC and PIT are at their standard addresses. If they are not, a special kernel can be compiled by changing their base addresses in port.def. A system BIOS is not required, since RDOS has it's own BIOS emulation (bios.rdv).
The system boot PROM is supposed to be placed at physical address 0FFF00000, with a 1MB size. The system shouldn't shadow it.
boot2bin
This will create a 1MB PROM image file named bootprom.bin. Bootprom.cfg is used as the configuration file. The configuration file has the same format as CFG2BINs configuration file.