Graphics pipeline

=First gen PRO chipset=
 * PRO-A0
 * PRO-B0
 * PRO-CT0
 * LSPC-A0

=Second gen chipset=
 * LSPC2-A2, NEO-B1 (most common)

AES


=CD gen chipset=
 * NEO-GRC
 * NEO-OFC (CD systems)
 * NEO-SFT new ZMC2 ?

The sprite and fix DRAM bus can be switched between from NEO-OFC and the 68k bus for upload of graphics, thus allowing software rendering.

=Last gen chipset=
 * NEO-GRZ