YM2151

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Equivalence table
Rebadged as Found on PCB (manufacturer)
3569 Dooyong, Para, Promat
9222S Yun Sung
AU301
BS901 Afega, Danbi, Dooyong, F2System, Omega System, SemiCom
CA101 First Amusement
CA5101 Jeil Computer System, Omega System, SemiCom
CY5001 Afega, Dongsung, Para
HG3091
K-661 Afega
KA2001 Danbi
KA51 Omega System, SemiCom
KB2001 SUN
PD2001 Afega
U6651 Semicom, Unico

FM Operator Type-M (OPM)

Pinout

        DIP24-600mil
         +---\/---+
Vss(GND) | 1    24| ØM
    *IRQ | 2    23| Ø1
     *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

Note

Usually comes in pair with YM3012

Files