Compatibility

680x0 Compatibility Guidelines

Key guidance from Amiga developer docs (68010/020/030/040 compatibility):

• Do not use the upper 8 bits of a pointer for unrelated data.
• Do not use signed variables/math for addresses.
• Avoid software delay loops and assumptions about async task ordering.
• Exception stack frames differ across 68k models; check type IDs.
• Do not use MOVE SR (use GetCC() instead).
• Avoid CLR on write-sensitive registers (68020 uses single write).
• Self-modifying code is discouraged; flush instruction cache when needed.

Source: Hardware/ADCD_2.1/_txt/Libraries_Manual_guide/node001B.html.txt.