MBC3 bankswitch to 0

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#15 MBC3 bankswitch to 0

Milestone: v1.0 (example)

Status: closed-fixed

Owner: nobody

Labels: None

Priority: 5

Updated: 2014-09-28

Created: 2014-07-24

Creator: Anthony J. Bentley

Private: No

The “ED” tile that shows up in Pokémon Red (MD5 3d45c1ee9abd5738df46d2bdda8b57dc) when entering names appears glitchy in Gambatte; see the attached screenshots.

This tile is located at 1:6767 in ROM. But the game program switches to bank 0 before copying the bytes at 6767 to 8F00. If I modify the game program to switch to bank 1 instead of 0, the tile shows up properly in Gambatte. This seems to be a problem with MBC3 emulation (“bank 0” should really map to bank 1?).

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gambatte_ed.png

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Anthony J. Bentley - 2014-07-24

Attaching a screenshot displaying the correct behavior.

correct_ed.png

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sinamas - 2014-07-24

fixed in commit 7c92c6dcde3e5b2853dad95ee8dcf49f0df2f074.

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sinamas - 2014-09-28

status: open --> closed-fixed
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MBC3 bankswitch to 0

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#15 MBC3 bankswitch to 0

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