Re: uniplus disks imaged

From: gilles <gilles.fetis_at_email.domain.hidden>
Date: Fri, 21 Mar 2008 02:55:56 -0700 (PDT)

> The Xenix driver has a poorly written interrupt handler; the bug doesn't
> appear with slower drives such as the original Apple ProFile, but the
> X/ProFile responds much more quickly, which causes the bug to appear.

That's why I added a wait state in my emulator to simulate a real disk access
after a read or write command is sent.

> The X/ProFile firmware could be adjusted to make the patches unnecessary,
> but that makes it noticably slower. Since only Xenix is affected, the patch
> seemed to be the best solution.

A good solution would be to make this wait state a parameter of an X/ profile
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. Received on 2015-07-15 16:43:03

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