Installing on a Tatung TWN-5213 CU

[peasthope]

Rich & all,

I found a couple more you can try if you wish to:

Code: [Select]

acpi=rsdt  acpi=copy_dsdt
With each of those, the result was as mentioned previously ending with this line.
ACPI BIOS Error (bug): A valid RSDP was not found (20250807tbxfroot-222)

FreeDOS also installed and booted with no difficulty. 
https://easthope.ca/FreeDOSonTatung.jpg

So, with no specific adjustments, these three systems have installed and booted on the machine.
AntiX 15
ETH Oberon 2.7
FreeDOS 1.4

Seems something not too exotic is overlooked.  I don't know
enough about CPU capabilities to have an insight.

Where else might a question be posted?

Thx,                         ... P.

[Rich]

Hi peasthope
The kernel has both APM and ACPI available. However, only one
can be active at a time. When both are available, the kernel
defaults to ACPI. Try this boot code to force it to use APM:

Code: [Select]

apm=on

[peasthope]

Try this boot code to force it to use APM:

Code: [Select]

apm=on

Comes to the same result as previously.  Again, this is the last line.

ACPI BIOS Error (bug): A valid RSDP was not found (20250807/tbxfroot-222)

If "apm=on" precluded ACPI, why report "ACPI BIOS Error"? The boot code failed to achieve the intended effect? Can we see more detail?

The other systems I mentioned present no complications with apm and acpi. I wonder whether those systems silently detect availability of apm or acpi and act accordingly?

Thx,                        ... P.

[Rich]

Hi peasthope

... Can we see more detail? ...

I should have thought of this sooner. Get rid of the  quiet  boot code.
It suppresses the kernels messages.