From: W B Hacker <wbh@conducive.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] fossil crash after installation
Date: Mon, 4 Jun 2007 04:13:49 -0400 [thread overview]
Message-ID: <4663C9BD.5060505@conducive.org> (raw)
In-Reply-To: <cdfbd40e70ec55bda5a5c52dc8857cd5@terzarima.net>
Charles Forsyth wrote:
>> DMA seems to be the quirkest area in the IDE interface.
>
> you must remember that dma is remarkable technology
> newly devised for the PC platform, and it has been understandably
> hard to get it just right.
>
>
Surely you jest?
Bill Godbout's 'Disk One' FDD controller had it on S-100, and it was nowhere
near 'new' even then. Nor dual-ported memory. Both available on the GA-SPC12 IIRC.
BIOS and driver code is what seems to be forever 'hard to get right'.
Smothers Brothers rules seem to apply: "If you borrow it, break it!"
Bill
next prev parent reply other threads:[~2007-06-04 8:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-04 7:26 Antonin Vecera
2007-06-04 7:35 ` Steve Simon
2007-06-04 7:59 ` Charles Forsyth
2007-06-04 8:13 ` W B Hacker [this message]
2007-06-04 8:55 ` Charles Forsyth
2007-06-04 8:27 ` Charles Forsyth
2007-06-04 8:58 ` W B Hacker
2007-06-04 8:55 ` Antonin Vecera
2007-06-04 9:32 ` Antonin Vecera
2007-06-04 11:45 ` erik quanstrom
2007-06-04 15:10 ` Russ Cox
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