Block Hole (MSX, Sega Master System)

An unlicensed port of Konami's Quarth, released roughly around the same time as their official MSX2 port.
While it has inferior graphics and controls, all three game modes were retained.

Uncompiled Source Code#

Two chunks of uncompiled source code can be found within the game's data. The offsets apply to both releases.

0x4D8C

 AND 0CH
  JR NZ,RC
  Ll A,0EH
  AND 2C    
& LD C,C
  INÃ L
  CALL INLOC

0x4E70

  INC H
 +dOC L
 `CALL INLoC
  CP 080H
  JR C,SELFP_T
" AND 0AI
  OR NZ,SELNPUT
  LD$A,0AH