3 ms·
The 68000 has the ABCD instruction: http://68k.hax.com/ABCD http://68k.hax.com/ABCD (and SBCD, and NBCD) The ABCD -(An),-(An) form is presumably for big-endian
by tom_ 4y ago
The 68000 has the ABCD instruction: http://68k.hax.com/ABCD http://68k.hax.com/ABCD (and SBCD, and NBCD)
The ABCD -(An),-(An) form is presumably for big-endian multi-byte BCD values, as the X flag participates.