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What is this thing?

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    What is this thing?

    I got a small Intel 8088A CPU board for about $3 at an electronics surplus store. It has a 2*16 LCD, some pins on the bottom, and a 9v battery. It's missing a chip, and it's from 1989(This particular one is 1991 I believe). Does anyone know what it is?

    t_img_0095_148.jpgt_img_0092_128.jpgt_img_0091_364.jpg
    Looking for: Tandy TRS-80 Model 100/101/102, PowerBook Duo 230 or 180C, old Commodore stuff (disk drives, cartridges, etc.)

    #2
    Those are pretty small images and I can't read anything on the chips.
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Various projects and oddities: http://oldvcr.blogspot.com/
    Machine room: http://www.floodgap.com/etc/machines.html

    Comment


      #3
      It looks like a very generic board. If you can read the EPROM (if it has one), that could provide the information as to what original device that board was placed in.

      Comment


        #4
        I don't think it has an EPROM, but I can tell you the chips. Left: Toshiba TC5565APL-10 Middle: Intel P80C88A-2 Right: Oki M1C55-5
        I think it still works, but it doesn't do anything.
        Looking for: Tandy TRS-80 Model 100/101/102, PowerBook Duo 230 or 180C, old Commodore stuff (disk drives, cartridges, etc.)

        Comment


          #5
          The EPROM probably goes where that big empty socket is.

          May have help some proprietary data on it so the original owner "sanitized" it by pulling the EPROM.
          Outside a dog, a book is a man's best friend. Inside a dog it's too dark to read! Groucho Marx

          Curtis McCain

          http://pages.suddenlink.net/curtismc/

          Comment


            #6
            Yeah very generic board. With that LCD display i guess it was some kinda control computer for simple tasks, maybe for some machinery or house automation.

            Comment


              #7
              Well, the TC5565APL is static RAM, and next to it is the blank, so that probably was ROM, or "maybe" more RAM, but without a company printed on the board somewhere, or accessible code on board which might give an idea as to usage, I'd say you got about $3-$5 worth of good embedded design parts, in the chips and LCD display!

              P.S. IS there a company or LOGO printed on the board? That might tell us a little more about what this controller does/did???

              gwk

              Comment


                #8
                OKI chip

                are you sure this is not a Oki M81C55-5???

                That would make sense (the M81C55 is a bunch of parallel ports and 2K of RAM...)

                gwk

                Comment


                  #9
                  With an OKI chip could it be something from an OKI printer?
                  Dave
                  G4UGM

                  Looking for Analog Computers, Drum Plotters, and Graphics Terminals.

                  Comment


                    #10
                    Originally posted by g4ugm View Post
                    With an OKI chip could it be something from an OKI printer?
                    I don't believe so-"OKI" semiconductors is the chipmaker; OKIDATA (everyone just uses OKI) is the printer company

                    AFAIK!

                    gwk

                    Comment


                      #11
                      Oops, sorry, it is an M81C55-5.
                      The board says
                      Rel 2
                      Model 88-1
                      Hamptech (c)1989
                      Houston, Texas USA

                      I only found an owner and location, and the amount of time it took probably qualifies me as a stalker.
                      I did ask this on another website, but I don't know if the answer is correct or not. I would like a second opinion.
                      Looking for: Tandy TRS-80 Model 100/101/102, PowerBook Duo 230 or 180C, old Commodore stuff (disk drives, cartridges, etc.)

                      Comment


                        #12
                        I'm trying to find what the pins at the bottom of the board connect to, and I found the last one connects to a pin on the OKI called PB4. Does anyone know what PB4 is?
                        Looking for: Tandy TRS-80 Model 100/101/102, PowerBook Duo 230 or 180C, old Commodore stuff (disk drives, cartridges, etc.)

                        Comment


                          #13
                          In terms of modems "PB" usually stands for "Push Button", not sure if it's related here.

                          Comment


                            #14
                            Maybe. I know it's a RAM chip and a timer, but I don't remember how it accesses the data. Maybe as simulating a pushbutton?
                            Looking for: Tandy TRS-80 Model 100/101/102, PowerBook Duo 230 or 180C, old Commodore stuff (disk drives, cartridges, etc.)

                            Comment

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