treeman wrote on 2020-11-16, 04:30:

I have a V2 and I damaged it years ago trying to desolder the rtc. Right in the same area and qfc chip. The Floppy never worked […]
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I have a V2 and I damaged it years ago trying to desolder the rtc. Right in the same area and qfc chip.
The Floppy never worked and I never pieced it that its from the damage in that area. I never really looked far into it since all my floppy disks are now unreadable and the only thing the floppy is good for the the boot up sound.

However if it helps you can confirm similar damage and fdc error.

This is my exact error when enabling floppy in bios

Same Error with mine

Eep386 wrote on 2020-11-16, 17:16:

CB18? It kind of looks like that component is an SMT ferrite bead. They look identical to SMT capacitors but aren't.
Of course I'm not saying that I am entirely sure that is what CB18 is.

Also, try checking the clock inputs for the UMC I/O chip. If both the COM and floppy ports are dead, that would cast some suspicion on the clock signal that drives both. I wish I could GET datasheets for UMC parts though, or else I'd tell you what pins to check!

Feipoa said it measured the CB18 component to be a 100nF capacitor. Can anyone actually desolder it and check what this thing is ?

How to check the clock inputs if I do not have a datasheet ? Should I trace a clock signal from something known ?

I wish I could help you here further, but without a datasheet it will be difficult to say where to trace the signal.
You can try tracing from something known.

Hello friends! Please help solve the problem. I buy a motherboard, MB-8433UUD-A VER:2 I put on it POD83 at 40MHz so right now he shows now Pentium overdrive 100. (By the way, if this processor is on bus 40MHz start may this means that he will work normally on it or problems may arise? I just heard that not everyone will start at 40MHz without volt mod).
I have problem with HDD, I'll try to use CF128Mb, HDD 8.2Gb, all is determined normally but does not start load from them. Are there any restrictions, who uses which HDD on it?

Version of BIOS v2014 (v4.51PG)

Mr.Hunt wrote on 2024-12-05, 16:08:

Hello friends! Please help solve the problem. I buy a motherboard, MB-8433UUD-A VER:2 I put on it POD83 at 40MHz so right now he shows now Pentium overdrive 100. (By the way, if this processor is on bus 40MHz start may this means that he will work normally on it or problems may arise? I just heard that not everyone will start at 40MHz without volt mod).
I have problem with HDD, I'll try to use CF128Mb, HDD 8.2Gb, all is determined normally but does not start load from them. Are there any restrictions, who uses which HDD on it?

Version of BIOS v2014 (v4.51PG)

Please. New Topic. Title: Problems overclocking POD83 to 100 MHz.

Disruptor wrote on 2024-12-05, 17:46:

Mr.Hunt wrote on 2024-12-05, 16:08:

Hello friends! Please help solve the problem. I buy a motherboard, MB-8433UUD-A VER:2 I put on it POD83 at 40MHz so right now he shows now Pentium overdrive 100. (By the way, if this processor is on bus 40MHz start may this means that he will work normally on it or problems may arise? I just heard that not everyone will start at 40MHz without volt mod).
I have problem with HDD, I'll try to use CF128Mb, HDD 8.2Gb, all is determined normally but does not start load from them. Are there any restrictions, who uses which HDD on it?

Version of BIOS v2014 (v4.51PG)

Please. New Topic. Title: Problems overclocking POD83 to 100 MHz.

Sorry but it's a not a proble overclocking, I ask about problem with HDD. About POD83 It's secondary question was simply.