YM2151

Equivalence table

Rebadged as	Found on PCB (manufacturer)
BS901	Afega, Danbi, F2System, Omega System, SemiCom
CA5101	Jeil Computer System
CY5001	Afega
KA51	Omega System, Semicom
PD2001	Afega

FM Operator Type-M (OPM)

Pinout

DIP24
         +---\/---+
Vss(GND) | 1    24| M
    *IRQ | 2    23| 1
     *IC | 3    22| Vdd(+5V)
      A0 | 4    21| S0
     *WR | 5    20| SH1
     *RD | 6    19| SH2
     *CS | 7    18| D7
     CT1 | 8    17| D6
     CT2 | 9    16| D5
      D0 |10    15| D4
Vss(GND) |11    14| D3
      D1 |12    13| D2
         +--------+

Frequency

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

External links

YM2151 page on Wikipedia

Files

• 
  YM2151 Datasheet