diff options
Diffstat (limited to 'z80.cpu')
| -rw-r--r-- | z80.cpu | 48 |
1 files changed, 48 insertions, 0 deletions
@@ -2171,4 +2171,52 @@ ed 10111001 cpdr end +00100111 daa + local diff 8 + local tmp 8 + local low 8 + and 0xF a low + and 0x8 chflags tmp + if tmp + + mov 6 diff + + else + + cmp 0xA low + if >=U + mov 6 diff + else + mov 0 diff + end + + end + + and 0x80 chflags tmp + if tmp + + or 0x60 diff diff + + else + + cmp 0xA0 a + if >=U + or 0x60 diff diff + end + end + + if nflag + + sub diff a a + update_flags SZYHPXC + + else + + add diff a a + update_flags SZYHPXC + + end + + +
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