The Great Circus Mystery Starring Mickey & Minnie (Genesis)

The Great Circus Mystery Starring Mickey & Minnie
Also known as: Great Circus Mystery - Mickey to Minnie: Magical Adventure 2 (JP) Developer: Capcom Publishers: Capcom (JP/US), Tec Toy (BR) Platform: Genesis Released in JP: December 16, 1994 Released in US: December 15, 1994 Released in BR: 1994 This game has a hidden developer message. This game has hidden developer credits. This game has hidden development-related text. This game has debugging material. This game has a hidden sound test.

One of Capcom's polished Disney games.

TEST MODE MENU

A debug menu is loaded by function $00C2AC.

Use the following game enhancer codes to call this function at the license screen:

Game Genie	Action Replay
1LMT-A6WG NWMT-A0LJ A4MT-AA4L	009746:4EBA 009748:2B64 00974A:6006

This menu expects multiple palettes to be loaded when invoked (for example, submenu SCR 1 2 TEST uses palette index 02 to show some labels). However, function $00C2AC doesn't setup any palettes, and the license screen only loads a single palette at index 00.

Alternatively, use the following game enhancer codes to call function $00C2AC in-game (when multiple palettes have been loaded), replacing the pause function (activated by pressing Start):

Game Genie	Action Replay
9EAA-C6VL AAAA-CABN ZTAA-CFVR	01002A:4EF9 01002C:0000 01002E:C2AC

Inside the debug menu, press Start + B to exit submenus. Press Start + A to exit the debug menu.

JOY I/O TEST

COLOR TEST

Displays palettes.

SCR 1 2 TEST

Displays tiles loaded in VRAM.

We can verify how these labels use multiple palettes by checking each label's entry data, for example:

0000cb3a  dw    4088h
0000cb3c  db    40h                         ; palette index (actual value: 40h >> 5 = 2h)
0000cb3d  ds    "---    VRAM  TEST    ---"  ; menu entry chars

Which is then sent to the VDP to be displayed:

                                 ; register D1 holds tile index (bits 1..10) and palette index (bits 14..15)
0000c298  addi.w     #0x580,D1w  ; add base offset of charset in vram to tile index
0000c29c  move.w     D1w,(A5)    ; write sprite data to VDP data port

SCR 3 TEST

Jumps to the TEST MODE MENU subroutine.

We can verify this (as well as other unimplemented entries) by checking the corresponding offset that is read when the entry is selected:

0000c30c 30 38 ee 56     move.w     (DAT_ffffee56).w,D0w
0000c310 32 3b 00 10     move.w     (submenu_off_tbl,PC,D0w*0x1),D1w
0000c314 4e bb 10 0c     jsr        (0xc322,PC,D1w*0x1=>SUB_0000c36a)  ; submenu subroutine

                     submenu_off_tbl       XREF[1]:     test_menu:0000c310(R)
0000c322 00 48           dw         48h    ; TEST MODE MENU
0000c324 01 d8           dw         1D8h   ; JOY I/O TEST
0000c326 04 24           dw         424h   ; COLOR TEST
0000c328 05 16           dw         516h   ; SCR 1 2 TEST
0000c32a 00 48           dw         48h    ; SCR 3 TEST (references TEST MODE MENU)
0000c32c 00 48           dw         48h    ; OBJ CHAR TEST (references TEST MODE MENU)
0000c32e 08 ce           dw         8CEh   ; SEQUENCE TEST
0000c330 16 48           dw         1648h  ; SOUND TEST

OBJ CHAR TEST

Jumps to the TEST MODE MENU subroutine.

SEQUENCE TEST

An animation test.

SOUND TEST

Unused Text

SAMPLE text

A build date from an earlier version. To view it, use Game Genie G6WA-HA9G or Action Replay code 0324E6:7037 and allow the title screen to load on its own without pressing any buttons.

Developer Text

This text appears at 53B68 in the US ROM and 5B350 in the Japanese version. The region tags are different between regions, of course. This same text also appears in the SNES version of the game.

US Version	Japanese Version
WALT DISNEY Mickey & Minnie 1994 CAPCOM U.S.A Programed by Masatsugu Shinohara Birth Day 1967 3 26 S63.12.04 Rita Hitsu H02.06.14 Burotsusum Ai	WALT DISNEY Mickey & Minnie 1994 CAPCOM JAPAN Programed by Masatsugu Shinohara Birth Day 1967 3 26 S63.12.04 Rita Hitsu H02.06.14 Burotsusum Ai

Build Dates

This text appears at the very end of the ROM. The Japanese text translates to "master", signifying that it's the final version of the game.

US Version	Japanese Version
SEGA ﾏｽﾀｰ ROM 1994/09/28	SEGA ﾏｽﾀｰ ROM 1994/10/13