Snezzi DS update with following:
Bug Fixes:

- Fixed the JMP ($xxxx) and the JML [$xxxx] instruction to read the indirect addresses from bank zero
instead of the current data bank.
(Aero fighters now work)
- Shifted the horizontal offset by 8 pixels to the right so games now look generally centralized
- Modified the IO for WRAM write at IO addresses 80-3 to behave as Snes9x
- Fixed the interrupts to push the correct program counter onto the stack, and the RTI instruction to
pop the correct program counter from the stack.
(Earthworm Jim now works)
- Fixed the 3C/D registers to generate the H/V counters correctly.
(Zelda-A Link to the Past now works, though in the name entry screen, the name selection still
does not move, and in-game text is invisible...)
- Fixed the COP instruction to fire a COP interrupt
(Illusion of Gaia now intros correctly)
- Fixed the MVP/MVN instruction to increment the cycle counter correctly.
- Fixed the DMA such that source DMA address is incremented and the DMA size is set to 0,
after each DMA channel read/write is complete.
(Contra's intro and in-game background tiles display correctly now)
(FF2 non-mode 7 backgrounds now displays correctly)
(Illusion of Gaia title screens appear)
- Added rendering for Modes 4 and 5.
(Secret of Mana name entry screen requires mode 5, and now appears better. Due to
double horizontal resolution though, the text appears but remains unreadable)
- Added the 39/A registers to read the VRAM.
(Illusion of Gaia seems to works perfectly)
(MegamanX, Megaman7 screens get restored after pressing start)
- Added option for enabling backdrop
(With this option set to Yes, Super Mario World backgrounds will not appear black)

Others:

- Provided additional SnezziDebugger.exe that can be used to debug SNES games to search for
speed hacks, SPC patches and other patches.