TwinWorld / IPF tracks

SPS 1294 · not AmigaDOS

IPF tracks

CAPS type-2 → MFM → skip 4 → odd/even merge $55555555.

FieldValue
Sync$5542
Decoded track$1790 bytes
Imagertracks 2–159 DOUBLEINC
LHAeven tracks, same-head stride T+2
Game imageodd tracks; first $AFC8 → $6520
track = d0 - 1 disk_offset = track * $1790 + (d2 & $FFFF) ; WHDLoad @ game+$9E4C · highscore track 17 / 110 bytes
Canonical source: retail IPF. Crack ADFs optional for boot RE only.