Not one capture here. Every picture is drawn from the bytes of the ROM with the cartridge's own tables: the title, the maps, the enemies, the items, the bosses, the ship, the power meter labels and the ending of the interior. The check against the openMSX VRAM is still to be done. The listing reassembles byte for byte with make.
F1 stops the game and lets you type (p03:BD7C), but only if Q*bert is in the other slot (0xF0F5 bit 0). LARS18TH fills the power meter and the weapons with a shield and two options, NEMESIS skips to the next stage and METALION makes the ship untouchable for 30 times 32 frames.
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At start-up the four slots are checked (p03:BCB1). With Maze of Galious alongside, the equipment is kept when the ship is lost and the BACK UP box gives it back (p02:8E7C, p01:7DD9). With Penguin Adventure the ship is a penguin.
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Stages 3, 6 and 10 hide an entrance at a fixed column (p03:BF3A): the scroll stops for 64 frames and then runs at double speed into stages 9, 10 and 11.
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Once beaten, its mouth stays open for 300 frames (p11:A93F): if the ship does not go in, it blows up and there is no interior and no captured weapon.
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The next stage goes up from 1 to 7 and then down from 6 to 0 (p01:7C59), with 0xE20A odd and more enemies. After the stage 7 boss comes DR.VENOM IS FAST APPROACHING NEMESIS, RETURN IMMEDIATELY! (p14:94D1).
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Under each picture is where it comes from and what is on it.
p01:615B, p01:61C1); on a Japanese MSX it reads GRADIUS.
p13:7900).
p09:BB01).
p00:4F4C) and the stage's sprite patterns.
p00:5265, p08:9094).
p03:A879).
p01:74A2).