===== 07 NLF F18 NOISE LFSR | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480
The image at 28000h uploaded and read back: 0 halfwords of 512 differ.
SPUCNT noise shift 15 step 3 (bits 13-10, 9-8, spx:701-702; a new level every sample,
spu2 07SNO:70-74). Voice 1 noise mode (NON bit 1, spx:681) on the silent loop, keyed on,
its level written 7FFFh in a sustain that never steps. 64 samples of its capture.
Key on 1: noise, pitch 1000: level 7FF7, written 7FFF reads 7FFF, after the capture 7FFF
  0000 0000 0000 0000 C9DC 0770 1101 2203 4408 8812 1024 2049 4094 812B 0255 04AC
  0959 12B3 2567 4ACF 95A7 2B3C 5679 AD06 59FB B40A 6802 D017 A02F 404D 80AD 0149
  0294 052A 0A55 14AA 2956 52AC A564 4AC8 9592 2B23 5647 AC91 5921 B245 648A C916
  922D 245A 48B5 916C 22D8 45B2 8B66 16CC 2D9A 5B36 B66F 6CDD D9BD B37A 66F4 CDEA
Key on 2: noise, pitch 1000: level 7FF7, written 7FFF reads 7FFF, after the capture 7FFF
  0000 0000 0C09 3027 6E12 DC27 B84F 709D E13C C278 84F0 09E0 13C1 2783 4F07 9E11
  3C22 7845 F08D E11B C23A 8474 08D8 11B0 2361 46C4 8D9A 1B22 3645 6C8B D929 B253
  6495 C93D 9275 24EA 49D5 93AC 2758 4EB1 9D65 3ACA 7596 EB2F D65F ACBE 597B B2F9
  65F2 CBE6 97CD 2F99 5F34 BE6A 7CD4 F9AA F354 E6A9 CD53 9AA6 354B 6A98 D532 AA64
The same at level 4000h:
noise, pitch 1000: level 7FF7, written 4000 reads 4000, after the capture 4000
  0000 0000 0000 0000 0000 0000 0000 0000 1C65 9198 03A5 074C 0E99 1D34 3A69 74D4
  E9AB D357 A6AF 4D5E 9AC6 357A 6AF5 D5FC ABF9 57E2 AFD8 5F9F BF50 7E90 FD32 FA65
Done.