Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-69
CHAPTER 3: PERIPHERAL CIRCUITS (Melody Generator)
For retrigger
Label Mnemonic/operand Comment
:
LD X,0F0H ;Set melody 1 address
LD MX,00H
INC X
LD MX,00H
LD X,0F4H ;Enable melody output
AND MX,0111B
LD Y,0F2H ;Set melody start
LD MY,01H
LD MY,00H ;Set MELC to "0" ← Start of melody 1
LD X,0E7H ;Enable melody
LD MX,01H ;Interrupt mask
EI ;Enable interrupt
:
:
LD X,0F0H ;Set melody n address
LD MX,04H
INC X
LD MX,02H
LD Y,0F2H ;Retrigger melody with
LD MY,07H ;TEMPC1, speed × 8 ← Mid-way through melody 1
LD MY,06H ;Set MELC to "0" ← Start of melody n
:
: