duangsuse Puts
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@duangsuse 的强势转载mark

倾向于不适合全部领域人看的内容
可能会有比较底层的知识
基本都是转载mark
@dsuse 技术纯度还高
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[tonghuix[m]] 其实不难,51单片机(STC)还能折腾bad apple呢
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[tonghuix[m]] 要有个大flash装图像即可,其他的好处理
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[niconiconi] tonghuix[m]: 有 Flash 那是作弊……
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[niconiconi] tonghuix[m]: Flash 有个 4 MiB 算是个合理的难度
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[tonghuix[m]] > (XMPP) niconiconi: tonghuix[m]: Flash 有个 4 MiB 算是个合理的难度
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[tonghuix[m]] 4MB都算easy模式。。。来个256KB的吧
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[niconiconi] tonghuix[m]: 再加点难度就是带 PWM 音频
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[tonghuix[m]] 把bad apple转换成纯字符,然后刷屏,用不了多少内存也用不了多少flash
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[persmule.y] 可以尝试下 romcc。
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[persmule.y] coreboot 谨制的不用内存的 C 编译器。
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[tonghuix[m]] 看来值得尝试一下romcc
不过说实话就那些寄存器真的够初始化 dram 控制器吗(
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[niconiconi] 而且需要与图像同步
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[niconiconi] 这就需要考虑一个循环中指令的周期问题了
x86 毕竟是贫寄存器架构(
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[tonghuix[m]] > (XMPP) niconiconi: 这就需要考虑一个循环中指令的周期问题了
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[tonghuix[m]] 可以用中断,但可能需要嵌套式中断,类似cotex-M的NVIC
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[persmule.y] @Icenowy: 所以新 CPU 都用上了 cache-as-ram。
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[persmule.y] 这样就可以用有栈的标准 C 编译器了。
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[persmule.y] 但为了初始化这个环境还是需要 romcc。
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[tonghuix[m]] 这让我想起来超级马里奥,8M的CPU同时处理图像+声音+用户控制,而且声音还是多声道的。。