Microcontroller emulator for plural device architecture configured by mode control data and operated under control code transmitted via same switching bus
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United States of America Patent
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Aug 1, 1995
Issued Date -
N/A
app pub date -
Aug 26, 1993
filing date -
Dec 18, 1990
priority date (Note) -
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Abstract
A configurable emulator system for emulating a microcontroller device architecture selected from a plurality of microcontroller device architectures is provided. The configurable emulator includes a master microcontroller emulator comprising at least one functional block that responds to a mode select input signal for designating the functional block as having a desired integrated circuit feature. The master microcontroller emulator includes means responsive to control code for executing the control code. A configuration mode selector responds to an external input signal by asserting a configuration flag. Bus selector means responds to the assertion of the configuration flag by transferring configuration data provided at a bus selector input to a configuration data output. The bus selector transfers control code provided at the bus selector input to the master microcontroller emulator via a control code output when the configuration flag is not asserted. The emulator system includes at least one configuration latch/decoder that responds to the configuration data provided at the configuration data output by providing the mode select input signal to the at least one functional block.
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