“Intel Inboard 386”的意思、由来-开放百科全书

词条

Intel Inboard 386

释义

Disadvantages
Advantages
References

Intel Inboard 386/AT and Intel Inboard 386/PC were 1980s ISA boards which allowed to upgrade respectively an IBM AT or an IBM PC computer into Intel 80386 machines.

The board was a full-length ISA expansion card that came with a 386 processor (16 MHz), an 80387 math coprocessor socket and 1 MB of RAM. 2 MB and 4 MB memory expansion options were also available. The board was activated after the regular XT/AT BIOS had finished its POST (power-on self test) routines and the OS had loaded the Intel DOS-based .sys device drivers (from config.sys).

Disadvantages

Some of the disadvantages of the product were:

Though the 80386 supported a 16-bit ISA bus, if the Inboard were plugged into an XT, it was limited to 8-bit ISA expansion cards.
If the BIOS did a slow POST, there would be a painfully long{{Clarify|reason=vague|date=December 2017}} length of time before the RAM checked out OK and one could begin to use the 80386 features. The Inboard did not "override" the on-board motherboard BIOS/firmware.

Advantages

Other than that, one could actually run applications that just would not run on an XT. Some of the applications included: Ventura 2.0 Desktop Publishing Software (with Hercules monochrome graphics), Autocad 386, Windows 3.1 (Inboard 386/AT model only).

References

2 : Compatibility cards|Intel products

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