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Re: Apple SCSI & rom 1



dempson@actrix.gen.nz (David Empson) wrote:

>Vernon Bartlett <DocVlad@mail.yahoo.com> wrote:
>
>> Do you know of any problems with the focus hard drive and the  Zip II
>> v1.0  4 MhZ accelerator for the  enhanced 2E? Am think about getting a
>> card but don't want to lose the accellerator.
>
>I don't have any experience with this combination, but I would not
>expect any problems, ASSUMING that the Focus card does not use DMA.

According to the advertisements, the Focus does not use DMA.
It is, however, supposedly on a par speedwise with the Apple
High Speed SCSI card, which does do DMA.  Something about
the overhead of SCSI versus the simplicity of IDE plus a custom
driver or something.