SePH found out that the latest Version of HM can edit dungeon maps. So no need anymore to renounce on these. However, there's a small bug in HM; Caves are saved with FE (but FF is needed to disable the dungeon map call in caves).

So here's a small asm to disable dungeon maps call in caves also after saving a cave in HM:

Code:


lorom

org $0288ff   ; hook
jmp $22ee00
nop
nop
nop

org $22ee00 ; new check
lda $040c
cmp #$FE  ; check FE cave
bne $04
jmp $02891b ; disable X-button
cmp #$FF  ; check FF cave
bne $04
jmp $02891b ;disable X-button
jmp $028906 ;enable X-button