Computer-peripheral interface for a game apparatus
First Claim
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1. An interface for interfacing a computer to a peripheral device wherein the computer provides a plurality of address signals on a plurality of address lines, a plurality of data signals on a plurality of data lines, and a plurality of control signals on a plurality of control lines, said interface comprising:
- control means having inputs operatively connected to the computer control lines and having output lines for supplying multiplexer control signals in response to the computer control signals;
multiplexer means having inputs operatively connected to the address lines and control means output lines and having multiplexer data lines operatively connected to the peripheral device, for sequentially conducting groups of address signals on the multiplexer data lines to the peripheral device in response to the control means control signals; and
gating means, coupled to the computer data lines, the multiplexer data lines and the control means output lines, for conducting data signals from the peripheral device on the multiplexer data lines to the computer data lines in response to the computer control means control signals.
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Abstract
A home computer system provides a video processor for use with a television receiver. The video processor can selectively perform a variety of modifications to pixel data under the direction of the CPU of the computer system before the pixel data is stored in a random access memory to effectively increase the speed or data handling power of the system.
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Citations
6 Claims
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1. An interface for interfacing a computer to a peripheral device wherein the computer provides a plurality of address signals on a plurality of address lines, a plurality of data signals on a plurality of data lines, and a plurality of control signals on a plurality of control lines, said interface comprising:
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control means having inputs operatively connected to the computer control lines and having output lines for supplying multiplexer control signals in response to the computer control signals; multiplexer means having inputs operatively connected to the address lines and control means output lines and having multiplexer data lines operatively connected to the peripheral device, for sequentially conducting groups of address signals on the multiplexer data lines to the peripheral device in response to the control means control signals; and gating means, coupled to the computer data lines, the multiplexer data lines and the control means output lines, for conducting data signals from the peripheral device on the multiplexer data lines to the computer data lines in response to the computer control means control signals. - View Dependent Claims (3, 4, 5, 6)
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2. An interface for interfacing a computer to a peripheral device wherein the computer provides a pluality of address signals on a plurality of address lines, a plurality of data signals on a plurality of data lines, and a plurality of control signals on a pluality of control lines, said interface comprising:
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control means having inputs operatively connected to the computer control lines and having output lines for supplying multiplexer control signals in response to the computer control signals; multiplexer means having inputs operatively connected to the address lines and control means output lines and having multiplexer data lines operatively connected to the peripheral device, for sequentially conducting groups of address signals on the multiplexer data lines to the peripheral device in response to the control means control signals; and gating means coupled to the computer data lines, the multiplexer data lines and the control means output lines for conducting data signals from the computer data lines to the peripheral device on the multiplexer data lines in response to the control means control signals.
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Specification