This is old work by me in 2003 but i did find the problem for this game it was later changed in mame drive for pc to match they had shared a cpu timing with pitfall which was wrong mame36b15.
Wonderboy SGA does work proper scrolling and speed .. sounder driver was allways a problem. I did not just port or compile mame source to dreamcast i worked on fixing mame drivers for games
http://www.dcemu.co.uk/vbulletin/thread ... ility-list
now on mame4all there is a problem with this game
Wonder Boy (not encrypted) -------------------4/5 (scrolling not smooth) -------------------bfg
Well there is a mistake in the wonderboy driver i will explain how i fixed it also this is using a custom encypted set i have included it because it my own hacked up set no romset you can download would ever work with this. so it's prolly the first time any one would see it work.
This was a major pain to do as it jerked about and flicked till i found
out that you need to over clock the cpu to stop it from flicking . it was underclocked in mame to help pitfall.to work it did not help wonderboy on the dreamcast. any way its is fullspeed some times over sound works (all so a major pain) to even get sounding like it for me any way. still a bit tinny and fast.
Link to selfboot cdi https://mega.nz/#!a2hSAQqS!wAcdw9RIgZNu ... 1GSZEFIsVs
Code: Select all
HOLD (start) and (A) in while in game to get back to the menu
(Y) inserts coins/start or a starts a game (A) is speed up and attack dont complain about that as thats the way it is in the arcade and can not be changed. (X) is jump
Speed is a touch over speed 105% it says on my counter on debugg mode