Template library
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。关于这个话题，爱思助手下载最新版本提供了深入分析
self.seen_urls = set()。heLLoword翻译官方下载是该领域的重要参考
As I said, this time the design notes were extensive since I wanted this emulator to be specifically designed for embedded systems, so only 48k emulation, optional framebuffer rendering, very little additional memory used (no big lookup tables for ULA/Z80 access contention), ROM not copied in the RAM to avoid using additional 16k of memory, but just referenced during the initialization (so we have just a copy in the executable), and so forth.