Liberty Bay Computing hard disk controller, s/n 0211
U30 is:
  Signetics
  82S181
  Callan label:
  U30: CWC HX0-3
  15-MAR-83/E311
  PN: 280051-02
U58 is:
  Signetics
  82S181
  Callan label:
  U58: CWC HX1-3
  15-MAR-83/6B95
  PN: 280052-02
U79 is:
  Signetics
  82S181
  Callan label:
  U79: CWC HX3-3
  15-MAR-83/0184
  PN: 280053-02
