20181010
- 68k and z80: use delays when handling vdp interrupts
- 68k and z80: process interrupts when halted
- 68k: fix f-line and a-line emulation
- 68k: fix Zero flag when doing add.b or add.w
- 68k: rebuild lib
- emu: fix rom wrapping
- emu: init I/O control port to 0 - fixes SGDK
- fm: dac 13 bit, avoids clicks
- sram: add save/load support
- vdp: add support for VRAM 8-bit read