I remember CSMWrap now, story ran last Spring.

BRING BACK THE BIOS! (TO UEFI SYSTEMS, THAT IS)
May 29, 2025 by Jenny List

I dabbled in Linux BIOS (AKA Coreboot) a long time ago and this
low-level or BIOS programming can be very tricky due to lack of
debugging interfaces.

Typically, you're likely going to desire using serial (eg. db5
port/cable) to another computer for receiving debugging messages via
terminal, as the computer will likely have little display while booting.

Another item, is a PCI BIOS post code card, in the event a hang, you'll
know where the hang-up is possibly.

Once figured-out the hang or hurdle, usually is quite stable and
extremely quick.

A wrapper for EFI/UEFI booting DOS/FreeDOS should be rather the easiest
and less code method for booting DOS/FreeDOS rather than a mass of code
for running Qemu.  Granted, the later is already written.

Given time, I may spend some time on this.

Roger

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