eZ80 support / port

[Kroc]

Phase 1: Adding an eZ80 mnemonic tree

• The ADL suffixes will be a major, major problem. Almost any instruction can be suffixed with ".sis", ".sil", ".lis" & ".lil"
• How do we handle default ADL mode, and changing it? Do we need eZ80-specific keywords

Phase 2: Porting v80 to eZ80

• Write v80 using eZ80 instructions, expanding it to 24-bit
• This will also require Agon MOS support instead of running on CP/M