Specifications

S1C62N82 TECHNICAL HARDWARE EPSON I-101
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Melody Generator)
Note Bear in mind that playing will start approximately 125 ms (in
case of normal speed) after writing "1" on the MELC register.
(b)Level hold mode
Repetition of the same melody or continuous playing of
different melodies is possible in this mode. The operating
procedure are as follows:
(1)Set the melody ROM address (start address) of the
desired melody in the address register (MAD0–MAD6).
(2)Write "1" on the MELC register.
(3)Immediately after procedure (2) above (before the
melody being played ends), write the start address of
the second melody on the address register (MAD0–
MAD6). When repeating the same melody, there is no
need to write anew on the address register.
(4)Since melody interrupt will be generated when the first
melody ends, write the address for the third melody on
the address register (MAD0–MAD6) with the interrupt
routine. This operation must be completed before the
second melody ends. When the same melody is to be
repeatedly played, there is no need for this operation.
The optional melody in the melody ROM may continu-
ously be played by repeating the above steps.
(5)To stop playing, write "0" on the MELC register while
the last melody is being played. This will cause the
playing to be automatically stopped when playing of
the last melody is completed.