register operand वाक्य

उदाहरण वाक्य

1. Instructions that need more than three operands have an extra suffix byte specifying one or two additional register operands.
2. Assume that the scheduling logic will issue an instruction to the execution unit when all of its register operands are ready.
3. SSE2 also allowed the MMX opcodes to use XMM register operands, but ended this support with SSE4 ( and recently with Core microarchitecture ).
4. The 16-bit instructions support two register operands in the lower 16 registers, whereas the 32-bit instructions support three register operands and access to all 32 registers.
5. The 16-bit instructions support two register operands in the lower 16 registers, whereas the 32-bit instructions support three register operands and access to all 32 registers.
6. To resolve the ambiguity while in 32-bit mode, VEX's specification exploits the fact that a legal LDS or LES's ModRM byte can not be of the form " 11xxxxxx " ( which would specify a register operand ).
7. Thirty-two 128-bit vector registers are provided, compared to eight for SSE and SSE2 ( extended to 16 in x86-64 ), and most VMX / AltiVec instructions take three register operands compared to only two register / register or register / memory operands on IA-32.
8. Less frequently used instructions are encoded in 32 bits . 32-bit instructions allow 16-or 20-bit immediate operands ( such as far branches ), up to six register operands ( for example long multiply which has four source and two destination operands ) and additional opcode space for rarely used instructions.
9. The same ALU that is used to execute arithmetic and logic instructions is also used to calculate effective addresses . ( There is a separate adder for adding a shifted segment register to the offset address, but the offset EA itself is always calculated entirely in the main ALU . ) Furthermore, the loose coupling of the EU and BIU ( bus unit ) inserts communication overhead between the units, and the four clock period bus transfer cycle is not particularly streamlined . ( Contrast the two clock period bus cycle of the 6502 CPU and the 80286's three clock period bus cycle with pipelining down to two cycles for most transfers . ) Most 8088 instructions that can operate on either registers or memory, including common ALU and data-movement operations, are at least four times slower for memory operands than for only register operands.