Specifications

S1C62N82 TECHNICAL HARDWARE EPSON I-105
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Melody Generator)
MELD
MELC
TEMPC
Note
Melody Output Mask (0F4H D3)
The melody signal output from the melody output terminal
(MO) may be masked through this register. After initial
reset, the melody signal becomes ready for output.
When 1 is written: Masked (signal output stops)
When 0 is written: Enabled
Reading: Valid
Melody ON/OFF Control Register (0F2H D0)
By operating this register, control of the melody playing ON/
OFF and the 3 types playing modes—one shot mode, level
hold mode and retrigger mode—can be performed.
When 1 is written: Playing starts
When 0 is written: Playing stops
Reading: Valid
Tempo Control Register (0F2H D1)
By operating this register, 1 type of tempo may be selected
from the 2 types previously selected by mask option.
When 1 is written: Selects the tempo of TEMPC1
selected by mask option
When 0 is written: Selects the tempo of TEMPC0
selected by mask option
Reading: Valid
Changing the tempo through this register is not possible in the
middle of a melody playing even if this register is operated while a
melody is being played. Change of melody will synchronize with
the playing of a new melody.