Y8950

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Sound Generator, MSX-Audio

Pinout

SDIP64-750mil
         +---\/---+
    AVcc | 1    64| Vcc
    AGND | 2    63| IN7
      DA | 3    62| IN6
      AD | 4    61| IN5
       C | 5    60| IN4
    *IO0 | 6    59| IN3
     *IO | 7    58| IN2
     GND | 8    57| IN1
    *IO2 | 9    56| IN0
    *IO3 |10    55| D7
    OUT0 |11    54| D6
    OUT1 |12    53| D5
    OUT2 |13    52| D4
    OUT3 |14    51| D3
    OUT4 |15    50| D2
    OUT5 |16    49| D1
    OUT6 |17    48| D0
    OUT7 |18    47| DM7
  SP-OFF |19    46| DM6
      SH |20    45| DM5
      MO |21    44| DM4
     ØSY |22    43| DM3
    *IRQ |23    42| DM2
     *IC |24    41| DM1
      A0 |25    40| GND
     *WR |26    39| DM0
     *RD |27    38| *RAS
     *CS |28    37| *CAS
     *WE |29    36| MDEN
     DT0 |30    35| *ROM-*CS
     GND |31    34| ØM
      A8 |32    33| Vcc
         +--------+

Frequency

Set reader to FREQ, put black probe to GND, red probe to 20, 22 and 34 to measure CPU clock

External links

Y8950 page on Wikipedia

Files