Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-65

CHAPTER 3: PERIPHERAL CIRCUITS (Melody Generator)

D1–D5: Scale Address Data (Scale ROM address)

What pitch is used depends on the address point of the

scale ROM and the scale data contained. (See scale ROM

data setting.)

D6–D8: Note Data

Note data table as below:

Table 3.11.4

Note data

Note

1 0 1 0 1 0 1 0

1 1 0 0 1 1 0 0

1 1 1 1 0 0 0 0

D9: ATK Data

There will be a short break (≈12 ms) before the note playing

if this data is set to "1". Usually, two notes of the same pitch

are separated with this function, otherwise the two notes

will play continuously without any break.

In each melody first word, set this data to "1". Otherwise,

there will be no melody play even if the user starts play.

Next, according to the user's definition it can set to "1" or

"0". If the hardware mask option selects the R12 envelope

function, this data also controls the note output by enve-

lope.

ATK data

(D9)

1 1 1 0

Note 1 pla

Note 2 pla

Note 3 pla

Note 4 pla

Envelope

Fig. 3.11.8

Waveform of envelope