This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
The TWGS-2B GAL was a DMA fix Applied Engineering issued for the board. It
is an absolute requirement for Transwarp to work at all with at least some
RamFAST SCSI boards (e.g. the revision C boards).
With Applied Engineering long since out of business and the GAL virtually
impossible to duplicate by convential means, that leaves no good source for
replacement GALs. I found it much more affordable (and less hassle) to just
purchase a used TransWarp GS board with the 2B GAL to replace your old one.
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By: Supertimer
RamFAST revision D does not require the 2B GAL. The Apple High Speed SCSI
card works with all TransWarps GS units.
By: Rubywand
 
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