===== 02 MST F19 MDEC BLOCK FIELD | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480
01TMS's stream: the step stream's tables, MDEC1 60000000h, timer 2 zeroed, the decode
command for 256 words, words 1-32 with no reads, the status after each (status@timer 2).
Then the status polled for 6000 cycles after word 32 and each change listed (@cycles
after word 32). Bits 18-16 are the block field (i-o-ports.txt:31).
15 bit run 1: command B60400FF@13; words where bits 16-31 changed: w32 E60400DF@1039
  after w32, 6 changes: E60500DF@862 E60000DF@1364 660000DF@1509 360000DF@1552 360100DF@1884 3E0100DF@1910
15 bit run 2: command B60400FF@13; words where bits 16-31 changed: w32 E60400DF@1029
  after w32, 6 changes: E60500DF@857 E60000DF@1359 660000DF@1504 360000DF@1547 360100DF@1879 3E0100DF@1905
24 bit run 1: command B40400FF@13; words where bits 16-31 changed: w32 E40400DF@1014
  after w32, 6 changes: E40500DF@857 E40000DF@1359 640000DF@1470 340000DF@1547 3C0000DF@1726 3C0100DF@1871
24 bit run 2: command B40400FF@13; words where bits 16-31 changed: w32 E40400DF@1029
  after w32, 6 changes: E40500DF@857 E40000DF@1359 640000DF@1470 340000DF@1547 3C0000DF@1726 3C0100DF@1871
Done.