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12873Re: [midatlanticretro] Re: makeshift IBM monitor

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  • Joe Giliberti
    Jun 1, 2009
      Here's as much info as I can pull off the mainboard

      Machine Serial:
      0177038

      On the planar:

      SW1
      on on on on off on on off

      SW2
      on off on on off off off off

      U28
      Empty Socket

      U29
      MK35748 J
      5700019
      ZA
      (copyright) IBM 1981
      D Malaysia
      8135 Q

      U30
      5700027
      (copyright) IBM 1981
      XE
      (motorola symbol) 8201BNM

      U31
      (motorola symbol) 5700035
      (copyright) IBM 1981
      XE8135ANM

      U32
      MK36728 P
      5700043
      ZA
      (copyright) IBM 1981
      D Malaysia
      8142 D

      U33
      MK36C35N-4
      1501476
      ZA
      (copyright) IBM CORP
      1981, 1983
      D Malaysia

      U34
      (not socketed)
      NEC
      PIY229-147
      D8253C-5

      Has a total of 36 of what I believe to be memory chips. Nine are soldered direct to the board, the remaining 27 are socketed
      The chips are marked:

      (AMD symbol) AM9016DPC
      8144WPP

      All 36 are the same chips


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