Re: TWGS Upgrade Availability?

[supertimer@aol.com (Supertimer)]

Wayne Stewart <waynes@intergate.bc.ca> wrote:

>Supertimer wrote:
>
>> On those TWGS cards that can't support DMA on a RamFAST, the
>> Apple High Speed SCSI will be faster because the Apple card supports
>> DMA on ALL TWGS cards.
>>
>> Frankly, when RamFAST and TWGS conflict, it is the RamFAST's fault.
>> Why else would the Apple HS SCSI not be affected?
>
>I've timed it. While the Ramfast is considerably slower with DMA shut off
>it's still quite a bit faster than the Apple High Speed SCSI card doing DMA.
>I compared 3 different Ramfast Rev D to 3 different Apple High Speed
>SCSI cards in a 13mhz IIgs.

Only under ProDOS 8.  A RamFAST with DMA off will be slower than
an Apple High Speed SCSI card with DMA on UNDER GS/OS on an
accelerated IIGS.