segment addressの例文

• The segment address of the PSP is passed in the DS register when the program is executed.
• A flat memory model is assumed, specifically, that the DS and ES segments address the same region of memory.
• Because of the way the segment address and offset are added, a single linear address can be mapped to up to 4096 distinct segment : offset pairs.
• In the x86 implementation of segmentation, the segment table, rather than pointing to a page table for the segment, contains the segment address in " linear memory ".
• The segment address is always added to a 16-bit offset in the instruction to yield a " linear " address, which is the same as physical address in this mode.
• Thus, row addresses are 13 bits, segment addresses are 2 bits, and 8 column address bits are required to select one byte from the 2048 bits ( 256 bytes ) in a segment.
• The 16-bit segment selector in the segment register is interpreted as the most significant 16 bits of a linear 20-bit address, called a segment address, of which the remaining four least significant bits are all zeros.
• For instance, the segmented address 06EFh : 1234h ( here the suffix " h " means hexadecimal ) has a segment selector of 06EFh, representing a segment address of 06EF0h, to which we add the offset, yielding the linear address 06EF0h + 1234h = 08124h.
• A TLB has a fixed number of slots containing page table entries and segment table entries; page table entries map virtual addresses to physical addresses and intermediate table addresses, while segment table entries map virtual addresses to segment addresses, intermediate table addresses and page table addresses.
• ,aka "'The Professor "'is an eccentric old scientist who is obsessed with creating an " Indestructible Giant Robot . " With help from Shion and friends in " Episode I " he creates Erde Kaiser, a giant combiner-robot from old parts found in various Segment Addresses.
• Because there is no protection or privilege limitation in real mode, even if a segment could be defined to be smaller than 64 KB, it would still be entirely up to the programs to coordinate and keep within the bounds of their segments, as any program can always access any memory ( since it can arbitrarily set segment selectors to change segment addresses with absolutely no supervision ).
• Because changing a segment register in protected mode caused a 6-byte segment descriptor to be loaded into the CPU from memory, the segment register load instruction took many tens of processor cycles, making it much slower than on the 8086; therefore, the strategy of computing segment addresses on-the-fly in order to access data structures larger than 128 kilobytes ( the combined size of the two data segments ) became impractical, even for those few programmers who had mastered it on the 8086 / 8088.