{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"38270854-596f-4a26-8183-db8c968c6020","title":"编码 隐匿在计算机软硬件背后的语言","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787121181184","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"38270854-596f-4a26-8183-db8c968c6020","id":"38270854-596f-4a26-8183-db8c968c6020","uuid":"38270854-596f-4a26-8183-db8c968c6020","title":"编码 隐匿在计算机软硬件背后的语言","normalized_title":"编码隐匿在计算机软硬件背后的语言","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787121181184","isbns":["9787121181184","0123456789","6044921875","3039331000","0000000000","0000000000000"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":438,"navigation_url":"https://workshop.closeclaw.top/ai/book/38270854-596f-4a26-8183-db8c968c6020","title_url":"https://workshop.closeclaw.top/ai/title/%E7%BC%96%E7%A0%81%20%E9%9A%90%E5%8C%BF%E5%9C%A8%E8%AE%A1%E7%AE%97%E6%9C%BA%E8%BD%AF%E7%A1%AC%E4%BB%B6%E8%83%8C%E5%90%8E%E7%9A%84%E8%AF%AD%E8%A8%80","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/38270854-596f-4a26-8183-db8c968c6020/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/38270854-596f-4a26-8183-db8c968c6020/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/38270854-596f-4a26-8183-db8c968c6020","page_url":"https://workshop.closeclaw.top/api/ai/books/38270854-596f-4a26-8183-db8c968c6020/page","search_url":"https://workshop.closeclaw.top/api/ai/books/38270854-596f-4a26-8183-db8c968c6020/search"},"page":{"printed_page":284,"pdf_page":300,"physical_index":300,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"c5c50f99d2f6aae47d0bf5d20db15ac2da9cc1787d85f4b51ed3d3f8da3e4775"},"chapter":"编码隐匿在计算机软硬件背后的语言","content":"例如，指令\n\n对应的操作码为：\n\n用十六进制数可表示为6Bh。这与前面列出的表格是一致的。\n\n可以设想一下，在8080的内部可能是这样的：标记为sss的3位用于8-1数据选择器，标记为ddd的3位用来控制3-8译码器以此确定哪一个寄存器锁存了值。\n\n寄存器B和C也可以组合成16位的寄存器对BC，同样我们还可以用D和E组成寄存器对DE。如果这些寄存器对也包含要读取或保存的字节的存储器地址，则可以用下面的指令实现：\n\n另一种类型的传送（Move）指令称做传送立即数（MoveImmediate），它的助记符写做MVI。传送立即数指令是一个双字节指令，第-个字节为操作码，第二个是数据。这个单字节数据从存储器转移到某个寄存器，或者转移到存储器中的某个存储单元，该存储单元由HL寄存器对寻址。\n\n编码—隐匿在计算机软硬件背后的语言\n\n284","previous_page":283,"next_page":285}