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This section has two detailed pictures of the guts of a PCjr. Picture 1: Open CaseI love hardware. Here is a picture of the silicon, plastic, and metal that makes a PCjr. Source: M. Brutman, 2005 This PCjr has all of the installable options, except for an internal modem. The empty slot is visible toward the center of the picture. Unlike modern PCs, there is no corner or boxed-in area set aside for the power supply. It is on the leftmost card, and it plugs directly into the motherboard. A black cable feeds the optional diskette drive, and the red and blue wires (sorry about the image quality) feed the fan that is integral do the diskette drive. This PCjr has three expansion sidecars on it - a memory
sidecar, a
printer
sidecar, and the speech adapter. Picture 2: Open Case, Motherboard onlyHere is the same machine, with everything removed from it:
This particular machine is a later version; it has an
AMD
D8088
soldered
to the motherboard, instead of an Intel 8088 sitting in a
socket.
(AMD made the D8088 under license from Intel.) Most of the
components
are fairly discrete - motherboards of this era did not have a lot of
integrated
"super chips" on them. |
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| Created in
December 2000, Last updated June 30th,
2008 (C)opyright Michael B. Brutman, mbbrutman at gmail.com Return to Mike's IBM PCjr Page main page |
