A Controversial Takeaway:
When your engineers beg for chrome finishes on vocational tools, ask: Will this help Ohio mechanics fix it faster? That dull gray machine shop lathe sells better because it lasts until students retire. Is your design team solving problems—or creating them?

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The IBM 5155 in question

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So this particular 5155 started its' life at Kingston, NY in 1984, ended up in North Carolina, and eventually landed in Endicott, NY where it was being used as some sort of custom test device.

I intend to eventually repaint the "KGN 06" letters back onto it. Because IBM Kingston was famously closed down in the early 1990s, as evidenced by the scribble on this mousepad:

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I find this particular 5155 charming. Its been beat around; the stickers on the front indicate that it is "RTP 06" (IBM Research Triangle Park, NC), but underneath the cheap stick-on letters are the remains of paint that had read "KGN 06" (IBM Kingston, NY). A non-IBM second 5.25" drive has been added with the aid of a Dremel, and a poor-mans hardware hack was made to the XT Rev 0 mainboard to give it 620K of RAM without an expansion card.

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Can anybody here recommend a DOS tool that will tell me what addresses are in use on a PC-XT and which will fit on a 360K floppy disk?

The Classical Computing Laboratory at IBM Poughkeepsie got sent a Portable PC from an IBM hardware lab and I cannot get my XT-IDE to work on it for unknown reasons; it hangs at the end of POST with the card inserted and I suspect that there is an address conflict.

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