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λãҳ > Ŷ̬ > ˾

Ϊʲô˵ǶʽȵƬҪѺܶࣿ

2020-08-16 11:20:32
Ϊʲô˵ǶʽȵƬҪѺܶࣿ

ƬǶʽʵûʲô׼ĶǣڽйƬǶʽĿ˵ԼĶ壬̸̸˶͸


ȷʲôǵƬƬһּɵ·оƬDzóģɵ·Ѿݴ봦CPU洢RAMֻ洢ROMI/Oںжϵͳʱ/ȹ(ܻʾ·Ƶ·ģ·תA/Dתȵ·)ɵһƬϹɵһСƵ΢ͼϵͳڹҵ㷺Ӧá80ɵʱ4λ8λƬչڵ300MĸٵƬƬ

51ϵеƬͼʾֻһһĴָСijоƬ40ţ߼㵥ԪʵҲһcpu


ʼӴƬʱ򣬻йһʣΪʲôƬǺɫĶDZɫ֪ǵƬϵơ


ԵƬԣʵһоƬȫı絥ƬСϵͳΪ˵ƬԪ羧5vԴеȡȻСϵͳֻܱ֤ƬУʵֲ˻ڵƬκӦá

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ܽᣬƬ㡢߼ơͨŵȹܵĵһģ顣ҲǵƬաDSPоƬҲΪһƬȻܺǿ󣬵ǹȻܵһ֮Ǵݡ߼
ôʲôǶʽأһ˵ǶʽָǶʽϵͳǶʽϵͳǽӦó򡢲ϵͳͼӲһϵͳָӦΪģԼΪӲɲüԵûӦöԹܡɿԡɱĺʹûҪרüϵͳIEEE(Instituteof Electrical and ElectronicsEngineers͵ӹʦЭ)ǶʽϵͳĶ壺ڿơӻ߸豸װá


ǶʽϵͳһרõļϵͳΪװû豸һ֡ͨǶʽϵͳһƳ洢ROMеǶʽư塣ʵϣдֽӿڵ豸ֱ΢¯¼ȣʹǶʽϵͳЩǶʽϵͳϵͳǶʽϵͳɵʵ߼ΪǶʽϵͳһڹҵƣҲ˵ĿƶдģҪ˹ԤͬʱҲΪ˱֤ϵͳȶͿɿ


Ǿ˾ƸҪǶʽʦǶʽӲʦҲ˵ǶʽϵͳӲʵϸҲףѾϵͳˣȻҲbspӲҲ˵ǶʽϵͳӲ壬ձͬǶʽϵͳΪӦΪģԼΪӲɲüӦӦϵͳԹܡɿԡɱĵϸҪרüϵͳ


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ӲаǶʽ΢洢(SDRAMROMFlash)ͨ豸ӿںI/Oӿ(A/DD/AI/O)һƬǶʽӵԴ·ʱӵ·ʹ洢·͹һǶʽĿģ顣вϵͳӦó򶼿Թ̻ROMС


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Ƕʽ΢иֲͬϵʹͬһϵҲܾвͬʱƵʺ߿ȣ򼯳˲ͬͽӿڡݲȫͳƣȫǶʽ΢Ѿ1000֣ϵṹ30ϵУϵARMMIPSPowerPCX86SHȡȫPCгͬǣûһǶʽ΢г32λIJƷԣ100ϵǶʽ΢Ƕʽ΢ѡǸݾӦöġ


arm˾иָĴܹcortexϵУARMv7ܹǵ2010ΪֹARM˾***ָܹARMv7ֹܹȷϵУAϵ***ĻڴIJϵͳûӦ;Rϵʵʱϵͳ;Mϵж΢ͼcortexϵеIJͬλ


Ƕʽ򣬿˵armܹĴռ˰ڽɽarm˾ҲΪ***ĿƼ˾ȴûκδֻṩIPԿ***˾׼õıȽ϶ļܹsparcpowerpcȡ


Ƕʽϵͳ罻Ҫһʽͨ豸ӿڣA/DD/AI/OȣͨƬ豸Ļ򴫸ʵ΢/ܡÿֻͨеһĹܣоƬҲоƬСܶ࣬ɴһ򵥵Ĵͨ豸dzӵ802.11豸


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ǶʽõĻһЩʵʱϵͳʵʱϵͳĺľʵʱԣʾΪʱĿԤԣҪڹ涨ʱɡIEEEʵʱϵͳĶǡЩȷԲȡڼ߼ҲȡڲʱϵͳʵʱϵͳӲʵʱʵʱ֣֮ӲʵʱҪڹ涨ʱڱɲڲϵͳʱ֤;ʵʱֻҪȼܿɲɡͨʹõIJϵͳھһı֮ͿԱʵʱϵͳ
ôʵʱϵͳLinuxַʱϵͳо£


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(2)ԡʵʱϢϵͳʱϵͳһжԡÿնûʱϵͳʱDZ˴˶IJ;ʵʱϵͳϢIJɼͶԶĿƣҲ˴˻š
(3)ʱԡʵʱϢϵͳʵʱԵҪʱϵͳƣܽܵĵȴʱȷ;ʵʱϵͳļʱԣԿƶҪĿʼֹʱɽֹʱȷģһΪ뼶ٺ뼶ֱ뼶еҪ100΢롣
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(5)ɿԡʱϵͳҪϵͳɿ֮£ʵʱϵͳҪϵͳ߶ȿɿΪκβܴ޴ľʧ޷ԤϵԺˣʵʱϵͳУȡ˶༶ݴʩ֤ϵͳİȫݵİȫ

ڸӿɿͼʱǶʽʵʱϵͳӹ㷺Ӧڹҵơպ졢򣬱NASA귢Ļ̽ȶDzõRTEMSʵʱϵͳ


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