1.8
This is a port of the original code by Matt Hagerty and AsmusR to run entirely on the GPU, delegating only the data loading to the host system.
The goal was to create a version which is easier to port to other systems - the result of that with C code can be found here
This is a 256k "non-inverted" bank-switched ROM. To use this 256k file on a 512k ROM board, simply duplicate it to create a 512k file.
Matt Hagerty has released this code for free use, as do I.
For F18A support, this thread on AtariAge and numerous others!