===== 08 MCB M2 COMMAND BITS | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 1F801DAA
Mono 8 bit signed, DC 100 and AC 50 at zigzag 1, with one of the command's bits
16-24 ("Not used (should be zero)", commands.txt:8) or bit 25 (bit 15, for 15 bit
only, :7) set: the status just after the command, words out, CRC and word 0.
No bit  0: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 16: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 17: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 18: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 19: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 20: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 21: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 22: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 23: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 24: status A3040001, 16 words, crc B8470132, 34677F7F, status after 8304FFFF
Bit 25: status A3840001, 16 words, crc B8470132, 34677F7F, status after 8384FFFF
MDEC(2) with the unused bits 1-24 set (0x41FFFFFE, luminance only, commands.txt:16-18),
then 16 words, then the status: after the command A004000F, after 16 words 8004FFFF
Done.