Nettetiii Contents Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii 1. Assembler Input ... NettetINTEL 80386 PROGRAMMER'S REFERENCE MANUAL 1986. 1.1.2. Part II Systems Programming. This part presents those aspects of the architecture that are customarily …

80386 Programmer

Nettetinstruction, does not store the result; only the flags are changed. CMP is. instruction. (Refer to Appendix D for the list of signed and unsigned flag. tests provided.) If an operand greater than one byte is compared to an. immediate byte, the byte value is first sign-extended. FS, or GS segments; #SS (0) for an illegal address in the SS segment; NettetThe 80386 stores information from descriptors in segment registers, thereby avoiding the need to consult a descriptor table every time it accesses memory. Every segment register has a "visible" portion and an "invisible" portion, as Figure 5-7 illustrates. terraria old ones army afk

I386 手册_i386手册_muzi_since的博客-CSDN博客

NettetThe 80386 raises an exception in these -- 13 if the segment is a data segment (i.e., if CS, DS, ES, FS, or GS is being used to address the segment), exception 12 if the segment is a stack segment ... , because they are in the range reserved by Intel. Table 14-2 describes the new 80386 exceptions. NettetAs the following table indicates, the latter two parts are intended as reference material for programmers actually engaged in the process of developing software for the 80386. … NettetThe 80386 transforms logical addresses (i.e., addresses as viewed by programmers) into physical address (i.e., actual addresses in physical memory) in two steps: Segment translation, in which a logical address (consisting of a segment selector and segment offset) are converted to a linear address. tricycle brain