US 5,630,084 A · System for converting data in little endian to big endian and vice versa by reversing two bits of address referencing one word of four words

Abstract

A data processing device including: data processor handling at one time a plurality of data such as instructions each consisting of one word; a plurality of input ports for inputting a plurality of data; a memory for storing temporarily the data inputted through the input pins, each of whose elements consisting of one byte; and exclusive OR gates for designating each of the elements of the memory. Each portion of a memory element is referenced by a byte address each consisting two bits wherein when the information device can handle data formed in a Little-endian-type, in which the address are increased in sequence from the byte on the Least significant Bit (LSB), and the data is formed in a big-endian-type, in which the byte address are increased in sequence from the byte on the Most Significant Bit (MSB), the exclusive OR gates reverse some of the bits of each byte address.

Claims3

Dependent claims

A data arranging device for arranging plural n-byte data words while transferring the plural n-byte data words from an external memory means to a data processing means, comprising:

external memory means for storing first and second n-byte data words;
data bus means for connecting a data processing means with the external memory means;
data processing means having first and second input terminals for receiving the first and second n-byte data words from the data bus means and for performing operations on the first and second n-byte data words;
selector means for providing the first n-byte data word to the second input terminal and the second n-byte data word to the first terminal when the external memory means and data processing means represent data words differently and for providing the first n-byte data word to the first terminal and the second n-byte data word to the second terminal when the external memory means and the data processing means represent data words consistently.

1 more element

Dependencies are inferred from the claim text.

System for converting data in little endian to big endian and vice versa by reversing two bits of address referencing one word of four words

Life of this patent

System for converting data in little endian to big endian and vice versa by reversing two bits of address referencing one word of four words

Life of this patent

Abstract

Claims3