Note: as for r9070, PC Engine CD emulation works, with the following noted quirks:
- all (?) games boots, if you can't surpass the CD System screen then most likely your image is bad / corrupt;
- it doesn't have any ADPCM emulation;
- it doesn't seem to have any CD-DA / "red book" playback;
- some of the games tested have shuffled graphics, probably something to do with DMAing;
- other games instead doesn't show/have garbage with the player sprite, dunno at current time why this peculiar thing happens;
- most if not all the games are very prone to hangs, most likely due of missing ADPCM status flags;
- Akumajou Dracula X is very fussy about starting a play on the title screen;
- All (?) Falcom games minus Ys 3 hangs with black screen at start-up
And now, some random screens:
4 in 1 Super CD 
<- hangs here 
