Enabling hints for all levels (not just first level)
Dragon's Lair 2 is written in C and compiled for x86. The v3.19 ROM will display the correct moves for the first level if the skill level is set to the easiest. However, if you don't have a lot of time and just want to play through the game, you may want to see the move hints for every move in the game. Here's the relevant code to modify:
seg000:27F4 loc_27F4: seg000:27F4 cmp word ptr ds:9C30h, 1 seg000:27F9 jge loc_2850 ; jump if difficulty >= 1 seg000:27FB mov bx, ds:56AAh seg000:27FF cmp byte ptr [bx+56CEh], 1 seg000:2804 jnz loc_2850 ; jump if level != 1 (change this to NOP NOP to always display hints) seg000:2806 cmp [bp+var_6], 1 seg000:280A jz loc_2812 ; jump if ev_state == 1 seg000:280C cmp [bp+var_6], 2 seg000:2810 jnz loc_2826 ; jump if ev_state != 2 seg000:2812 seg000:2812 loc_2812: seg000:2812 cmp [bp+var_2], 0 seg000:2816 jz loc_2826 seg000:2818 push [bp+var_8] seg000:281B call sub_25D4 ; SHOW THE HINT (call db_text_out) seg000:281E add sp, 2 seg000:2821 mov [bp+var_2], 0
Change location 2804 from 75 4A to 90 90 (two NO-Op calls) using a hex editor such as XVI32. This should make it so the ROM program doesn't care which level you're on. You should be able to test your changes using Daphne. Daphne will complain about a CRC error if you try to use a modified ROM but it should still work.
All of this is theoretical and has not been tested. But it _should_ work. :)