Originally Posted By etabeta78
because the spc700 was in the real console while the dsp was not?
and then shall we get all 4 revisions + the seta ones + cx4?

1, 1A, 1B, 2, 3, 4 - 6 revisions, not 4. 1A is undumped? (only 1 game uses it and in higan 1A dump is replaced with 1B).