6 - No I/O timing whatsoever except for video events.
7 (ie DMA, rendering, GD-Rom operations need to take > 0 ms to complete)
10 + Base instruction set
12 - Not remotely cycle-correct timing
14 SH4 On-chip peripherals
16 * Not implemented except for PCTRA/PDTRA, and that part is quite dodgy.
20 * Implemented to extent needed by ASIC DMA, not fully complete
26 * Not implemented (not even hooked up in the hardware?)
28 * Complete? (not heavily tested)
36 + Base instruction set (Complete?)
38 - No system coprocessor support
39 - No cycle-correct timing
41 + Basic sound generation
48 - Functionally complete
49 - Some bugs/error behaviour not implemented
52 + Basic opaque and translucent polygon support
53 + Depth buffer, alpha blend, most poly modes
54 + Opaque shadow volumes
55 - Basic translucent poly sorting
59 + All texture formats supported except bump maps
63 + Supports Ident, Set feature, and Packet (and no other IDE commands)
64 + Supports PIO and DMA modes
66 + Supports Test ready, Ident, Read TOC, Read Session info, Sense request, and Read CD
68 - other 20-odd commands not supported
72 + Standard DC controllers
.