B&R 4P3040.01-490電源板
1.產(chǎn) 品 介 紹
品牌：B&R
型號(hào)說(shuō)明：B&R 4P3040.01-490電源板
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2.產(chǎn) 品 詳 情 資 料：
程序必須確保堆棧中存在異常堆棧幀。在跳轉(zhuǎn)到異常處理程序的地址之前，它必須與處理器為特定異常創(chuàng)建的完全相同。下面是一個(gè)異常處理程序示例，它可以將異常傳遞給調(diào)試器：B&R 4P3040.01-490通用異常處理程序B&R 4P3040.01-490有一個(gè)通用異常處理器，它使用它來(lái)處理表中未列出的所有異常4-2.對(duì)于所有這些異常，目標(biāo)堆棧指針都指向創(chuàng)建的異常堆棧幀的頂部。這樣，如果在代碼執(zhí)行過(guò)程中發(fā)生意外異常，將向您提供異常堆?？蚣?，以幫助確定異常的原因。以下示例對(duì)此進(jìn)行了說(shuō)明：示例：地址$F00000處的總線錯(cuò)誤。對(duì)于本示例，假設(shè)對(duì)存儲(chǔ)器位置$F00000的訪問(wèn)啟動(dòng)了總線錯(cuò)誤異常處理。B&R 4P3040.01-490
Your program must make sure that there is an exception stack frame in the stack. It must be exactly the same as the processor would have created for the particular exception before jumping to the address of the exception handler.The following is an example of an exception handler which can pass an exception along to the debugger:162Bug Generalized Exception Handler The B&R 4P3040.01-490 has a generalized exception handler which it uses to handle all of the exceptions not listed in Table 4-2. For all these exceptions, the target stack pointer is left pointing to the top of the exception stack frame created. In this way, if an unexpected exception occurs during execution of your code, you are presented with the exception stack frame to help determine the cause of the exception. The following example illustrates this: Example: Bus error at address $F00000. It is assumed for this example that an access of memory location $F00000 initiates bus error exception processing.B&R 4P3040.01-490
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