Re: Transwarp and Apple High Speed SCSI card question....

[dempson@actrix.gen.nz (David Empson)]

Dave Morrison <deth@idx.com.au> wrote:

> Does any one have any experience using an Apple high speed SCSI card
> with a Transwarp in a platinum ][e??

Not directly, but I'm almost certain that I know what the problem will
be.

> At present, my hard drive (88MB Syquest) wont work with the
> transwarp unless I hold down escape on boot up disabling the
> transwarp. 

Have you tried disabling DMA on the SCSI card (switch 1, if I remember
right)?  The TransWarp (along with every other Apple IIe accelerator)
does not support DMA devices.

You therefore have two options:

1. Fast CPU and slow disk I/O (TransWarp enabled, DMA on SCSI card
disabled).

2. Slow CPU and fast disk I/O (TransWarp disabled, DMA on SCSI card
enabled).

I'd suggest the former is more useful.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand