Re: Apple II accelerator card.

[raymac@crl.com (Raymond D. McAnally)]

mrvermin@io.org wrote:
: In <401jmr$3qm@crl5.crl.com>, raymac@crl.com (Raymond D. McAnally) writes:

: >What you may have there is the old "Speed Demon" card from M c T. They 
: >were the fore runner to Zip Technologies. What may be happening is that 
: >you are using an Apple High Speed SCSI card which uses DMA to speed up 
: >it's processing. If so, turn off the DMA and try it again. The card will 
: >now function like the older Rev. C SCSI card which is a little slower. 
: >There are no accelerators that were produced that were compatible with a 
: >DMA SCSI card. I believe the reason was because they were making use of 
: >it themselves.
: >-- 
:  
:  I find this strange as both the Zip 9/64 as well as the Transwarp work perfectly
: with the Apple DMA High Speed SCSI Card, with the DMA turned on....

:  maybe you are only talking about the card in question that this person has. It 
: predates the Zip so it was before the DMA HS SCSI Card was released. However
: all cards since then work with the DMA HS SCSI card just fine...
:  
:  Joel Blass
: mrvermin@io.org


Oops, I forgot to include that I was speaking of a //e. The Zip and 
Transwarp cards for the GS work just fine with DMA. The card he is 
talking about is for an Apple ][, ][+ or //e. I assumed he was using the 
card in one of those machines as it will not function at all in a GS.
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     MAC				        	raymac@crl.com
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