youxiaojie wrote on 2025-02-18, 11:01:

perfect! I wanna to testing gentoo and archlinux32, coreboot is perfect! […]
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perfect! I wanna to testing gentoo and archlinux32, coreboot is perfect!

the dx-9200i I own is not edo support, debug card loops, and octeck 12 vip is edo supported.
I try to take some picture and take a multimeter to trace the route.

I try to dump registers.
and I can read C code and modified some code, I want to try embedded C.
is the edo-support decided by bios or chipset?
does the bios update bring me edo support?

kernel 6.6 compile success, fail to run

pc2005 wrote on 2025-02-07, 01:28:

Late 486 may have 8886BF, which does have a nonstandard IDE busmaster. It may be possible 8886N version have even more improved controller. I've found few different pins (keyboard) but I didn't bother to make pinout (the chip was dead and the southbridge doesn't have much configuration options). I agree there will be most likely changes for power management.

I've got a question along these lines -- I have a 486 VIP board with this chip (the 8886BF) that seems to have a problem where the RESET line is stuck high. I also measured the power-good pin on the PSU and it's seemingly being loaded down to the point where it's measuring about 4.6V instead of the usual +5, which seems really suspicious to me. With respect to the power management side of things, would the pinouts of the BF and N versions be the same here?

mbalmer wrote on 2025-03-13, 16:30:

pc2005 wrote on 2025-02-07, 01:28:

With respect to the power management side of things, would the pinouts of the BF and N versions be the same here?

RSTDRV line seems to be connected at pin 157 on both N and BF versions (goes to F244 buffer and to ISA RESETDRV pin)

I would make pinout too, but I don't have any free time to that 🙁.

youxiaojie wrote on 2025-02-24, 04:17:

kernel 6.6 compile success, fail to run

You gonna need to add some ISA serial port card (if DX-9200I doesn't have any integrated) and log any errors via COM1 (115200 bauds .. I think)