Ghosts'n Goblins: Ghosts 'n Goblins - Map Skip

This hack auto-skips the map cutscene (except between levels).

It removes the blank third option from the starting menu.

And it auto-selects "CONTINUE" after Game Over.

This hack is compatible with the USA ROM of Ghosts 'n Goblins.

You can apply this patch using Lunar IPS.

Documentation has been included.

Hope you enjoy.

DOCUMENTATION

6502 Instruction Set:
https://www.masswerk.at/6502/6502_instruction_set.html

MAME Debugging:
mame nes -cart roms\gng.sfc -debug


AUTO-SET MENU TO CONTINUE:

1C457: CHANGE:
C447 lda #$00 A9 00 | C447 jsr $ffe8 20 E8 FF // When main menu loads, goto $ffe8 (below)
C449 sta $a3 85 A3 | C44A nop EA

1FFF8: CHANGE:
FFE8 isb $ffff, x FF FF FF | FFE8 lda #$00 A9 00
FFEB isb $ffff, x FF FF FF | FFEA sta $a3 85 A3 // $A3 (menu selection) = 00 (first option)
FFEE isb $ffff, x FF FF FF | FFEC lda $bb A5 BB // $BB == 0 at launch, and FF when you start a new game
FFF1 isb $ffff, x FF FF FF | FFEE beq $fff9 F0 09
FFF4 isb $ffff, x FF FF FF | | FFF0 lda #$b2 A9 B2
FFF7 isb $ffff, x FF FF FF | | FFF2 sta $0509 8D 09 05 // $0509 (menu selector icon) = B2 (third option)
| | FFF5 lda #$02 A9 02
| | FFF7 sta $a3 85 A3 // $A3 (menu selection) = 02 (third option)
| FFF9 rts 60


DISALLOW SELECTING BLANK THIRD OPTION ON MENU:

1C4C9: CHANGE:
C4B9 lda $0509 AD 09 05
C4BC clc 18 | C4BC jsr $c8ab 20 AB C8 // When select is pressed on main menu, goto $c8ab (below)
C4BD adc #$10 69 10 |
C4BF inc $a3 E6 A3
C4C1 cmp #$c2 C9 C2
C4C3 bcc $c4cb 90 06
| C4C5 lda #$00 A9 00 // IF A == C2:
| C4C7 sta $a3 85 A3 // $A3 (menu selection) = 00 (first option)
| C4C9 lda #$92 A9 92 // $0509 (menu selector icon) = 92 (first option)
C4CB sta $0509 8D 09 05

1C8BB: CHANGE:
C8AB isb $ffff, x FF FF FF | C8AB clc 18
C8AE isb $ffff, x FF FF FF | C8AC adc #$10 69 10
C8B1 isb $ffff, x FF FF FF | C8AE cmp #$b2 C9 B2
C8B4 isb $ffff, x FF FF FF | C8B0 bcc $c8bc 90 0A // IF $0509 (menu selector icon) + 10 == B2 (third option)
C8B7 isb $ffff, x FF FF FF | | C8B2 pha 48
C8BA isb $ffff, x FF FF FF | | C8B3 lda $bb A5 BB
| | C8B5 bne $c8bb D0 04
| | | C8B7 pla 68 // IF $BB == 0: (i.e. we haven't started playing)
| | | C8B8 lda #$c2 A9 C2 // A = C2
| | | C8BA pha 48
| | C8BB pla 68
| C8BC rts 60


AUTO-SKIP MAP CUTSCENE (EXCEPT BETWEEN LEVELS):

1CD9E: CHANGE:
CD8E lda $94 A5 94 // $94 == 00 normally, and FF in demo
CD90 bne $cd8d D0 FB // Skip Map for demo (default)
CD92 lda $070c AD 0C 07 // $070C == 00 normally, and FF between levels
CD95 bne $cd9b D0 04 | CD95 bne $cd9d D0 06 // Show Map between levels (default)
CD97 lda $a6 A5 A6 // $A6 == 00 when game starts until first death, then FF
CD99 beq $cd8d F0 F2 // Skip Map for intro (default)
CD9B lda #$00 A9 00 | CD9B rts, nop 60 EA // rts to $D0E0 (Skip Map)
CD9D sta $c000 8D 00 C0 | CD9D lda #$00 A9 00
CDA0 sta $c7 85 C7 | CD9F sta $c000 8D 00 C0
CDA2 lda #$00 A9 00 | CDA2 sta $c7 85 C7

If you would prefer to ALWAYS skip the map cutscene, just make $CD8E ($1CD9E) = 60 (rts)

Database match: Ghosts'n Goblins (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 8DE81D363E11CECB570A9D18237F7B56B2B659DB
File CRC32: 87ED54AA
ROM SHA-1: CA03C76B65F0FE5B1D05149D7E9A97B4D5F44A27
ROM CRC32: B4E4879E