Skip to content

Instantly share code, notes, and snippets.

@knight-ryu12

knight-ryu12/opl4_format.md

Last active June 4, 2020 05:25
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save knight-ryu12/bea2f4c79be37829f1f08930a692b435 to your computer and use it in GitHub Desktop.
Save knight-ryu12/bea2f4c79be37829f1f08930a692b435 to your computer and use it in GitHub Desktop.
Download ZIP
Raw
opl4_format.md

VGM OPL4

OPL4 External Memory Format

0000h D 1 D 0 S21 S20 S19 S18 S17 S16
0001h S15 S14 S13 S12 S11 S10 S09 S08
0002h S07 S06 S05 S04 S03 S02 S01 S00
0003h L15 L14 L13 L12 L11 L10 L09 L08
0004h L07 L06 L05 L04 L03 L02 L01 L00
0005h E15 E14 E13 E12 E11 E10 E09 E08
0006h E07 E06 E05 E04 E03 E02 E01 E00
0007h   0   0 LF2 LF1 LF0 VI2 VI1 VI0
0008h AR3 AR2 AR1 AR0 D13 D12 D11 D10
0009h DL3 DL2 DL1 DL0 D23 D22 D21 D20
000Ah Rc3 Rc2 Rc1 Rc0 RR3 RR2 RR1 RR0
000Bh   0   0   0   0   0 AM2 AM1 AM0
... til 383.

Data format

00 - 8bit 01 - 12bit 10 - 16bit

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment