Routines
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DDE0: Display a message and beep
Used by the routines at CA5B, CDD3, DB63 and DCF6.
Input
HL Pointer to message graphic data
DDE0 CALL $EEF1 Display the message.
DDE3 LD DE,$00FF Set the frequency.
DDE6 LD B,$AA Set the length.
DDE8 CALL $DAB2 Beep
DDEB LD DE,$00FF Set the frequency.
DDEE LD B,$FF Set the length.
DDF0 CALL $DAB2 Beep.
DDF3 RET Return.
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