2,500 continuous runtime hours on a 4.77Mhz DOS web server

Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by anyfoo on Saturday July 15, 2023 @01:43AM (#36733938)

Note that the original PCjr keyboard was notorious for being terrible. One of the major flaws that helped making that system a flop.

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Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by fuzztester on Saturday July 15, 2023 @02:01AM (#36734022)

What were the other major flaws?

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Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by einr on Saturday July 15, 2023 @03:46AM (#36734536)

* No standard ISA slots, instead a bulky and expensive ”sidecar” system

* Partially incompatible with regular IBM PC software

* Max 128K RAM

IBM likely did this stuff on purpose to avoid cannibalizing PC sales, but it ended up killing the Jr. Later on Tandy would borrow the PCjr sound and graphics hardware (superior to a normal CGA PC/XT) for a line of more successful personal computers.

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Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by bdowling on Saturday July 15, 2023 @04:01AM (#36734610)

> * Max 128K RAM

IBM sold a 128K memory expansion sidecar to bring it to 256K. There is also apparently a way to swap in denser RAM chips to make it 512K (640K total).

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Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by anyfoo on Saturday July 15, 2023 @04:32PM (#36740674)

And very expensive for all of that.

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Re:2,500 continuous runtime hours on a 4.77Mhz DOS web server by fuzztester on Tuesday July 18, 2023 @04:27AM (#36769455)

Thanks

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