IDE knowledge anyone?

Oliver Lehmann lehmann at
Tue Dec 8 14:36:43 CST 2015

Toby Thain <toby at> wrote:

> On 2015-12-08 2:16 AM, Oliver Lehmann wrote:
>> Hi Warner, hi Brad,
>> ...
>> I don't intend to use this harddrive anyway, I just fear that I made a
>> misstake in my circuit or the code and others intending to use my
>> emulator also experiencing problems with their drives too.
> Well, it's certainly interesting. I'm curious now whether your WDC  
> AC31600H would work with my PIC code. :)

I checked it now with an old 486-DX50 EISA+VLB board (rare combination ;))
with a Goldstar Prime 2 and an Acer M5105 ISA Controller. Both detect and
work fine with this harddisk. No idea what mode they work but I guess it
is PIO 0-whatever only - no DMA involved....

Damn this drives me nuts.... either I accept it, or I get a logic analyzer
but the cost of such a thing..... :/

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