YM3526

FM Operator Type-L (OPL)

Pinout

DIP24
         +---\/---+
     Vss | 1    24| ØM
    *IRQ | 2    23| ØSY
     *IC | 3    22| NC
      AO | 4    21| MO
     *WR | 5    20| SH
     *RD | 6    19| NC
     *CS | 7    18| D7
      NC | 8    17| D6
      NC | 9    16| D5
      D0 |10    15| D4
      D1 |11    14| D3
     GND |12    13| D2
         +--------+

Frequency

DIP24
Set reader to FREQ, put black probe to GND, red probe to 20,23 and 24 to measure CPU clock

External links

YM3526 page on Wikipedia

Files

• 
  YM3526 Datasheet