This not only decreases the amount of XBIOS calls but also avoids
repeating the sample buffer in case of a heavier CPU load.
Also clean up the mixer code.
- surface setup for optimized 4-bit C2P routine wasn't properly detected
- STFA pretends to support Falcon sampling frequencies on TT leading to
suboptimal sample mixing
- delayMillis() should check also for other events (fixes Future Wars)
but avoid doing it for SCI as its MIDI timer would call itself in a
recursive loop
- SuperVidel doesn't need to use VsetScreen() in VBL anymore
- Wetlands, Teen Agent, Shivers and Private Eye need non-aligned
surface widths
- However Wetlands and Private Eye use setCursorPalette, see
https://bugs.scummvm.org/ticket/14524
- Added warning for Phantasmagoria's 630x450, nothing can be done there
as the game also requires non-aligned surfaces and at the same time
the buffer has to be aligned on 16 bytes.
- BDF scaling disabled by default
- Atari TT support
- all video and audio is now handled via XBIOS
- reworked IKBD handling using Kbdvbase vectors, esp. Kbdvec()
- video uses proper triple buffer
- arbitrary game screen size support
- many fixes and optimizations
Miro Kropacek