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Game Development Dictionary


Hardware


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  Term Name Description

PIT

Programmable Interval Timer. A timer present in all PCs with a frequency of 1.193MHz (2^32/3600) with 3 outputs, channel 0 causing IRQ 0 (int 8), channel 1 for memory refresh and channel 2 for the PC Speaker.

MMX

An advancement to Intel microprocessors which added 57 new instructions which are designed to handle video, audio, and graphical data more efficiently.

MCA Bus

IBM's PS/2 32-bit expansion bus. In 1987, IBM created the PS/2, with a 32-bit expansion bus, to replace the original PC's ISA 8 bit (and later 16 bit) buses. The MCA bus was patented, so other brands than IBM couldn't use them. That has lead a consortium to create EISA bus. Very few cards are in MCA bus nowadays.

MIPS

Million Instructions Per Second. Measurement of speed for processors.


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