name:         6581
function:     Audio Output Chip
package:      28 Pin DIL,28
manufacturer: MosTek
added-by:     Rob Gill
comment:      Sound chip used in commodore 64 Computers

      +--()--+
CAP1A | 1  28| Vdd
CAP1B | 2  27| AUDIO OUT
CAP2A | 3  26| EXT In
CAP2B | 4  25| Vcc
 /RES | 5  24| POT X
  ř 2 | 6  23| POT Y
  R/W | 7  22| D7
  /CS | 8  21| D6
   A0 | 9  20| D5
   A1 |10  19| D4
   A2 |11  18| D3
   A3 |12  17| D2
   A4 |13  16| D1
  GND |14  15| D0
      +------+

This information was added by a third party and may be incorrect.

This pinout came from the Chipdir:
http://www.chipdir.org/