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The REX prefix provides additional space for encoding 64-bit addressing modes and additional registers present in the x86-64 architecture. Bit-field W changes the operand size to 64 bits, R expands reg to 4 bits, B expands r/m (or opreg in the few opcodes that encode the register in the 3 lowest opcode bits, such as "POP reg"), and X and B expand index and base in the SIB byte.
VEX V5 Robotics Competition (previously VEX EDR, VRC) is for middle and high school students. This is the largest league of the four. VEX Robotics teams have an opportunity to compete annually in the VEX V5 Robotics Competition (V5RC) [3] VEX IQ Robotics Competition is for elementary and middle school students. VEX IQ robotics teams have an ...
The EVEX scheme is a 4-byte extension to the VEX scheme which supports the AVX-512 instruction set and allows addressing new 512-bit ZMM registers and new 64-bit operand mask registers. With Advanced Performance Extensions , the Extended EVEX prefix redefines the semantics of several payload bits.
The REC Foundation hosts a variety of online challenges for VEX Robotics competitors meant to help extend learning beyond the competition field. Winners of online challenges may receive a variety of awards including qualification to the VEX Robotics World Championships, merchandise from sponsors, and recognition during the opening and closing ...
FIRST Tech Challenge (FTC), formerly known as FIRST Vex Challenge, is a robotics competition for students in grades 7–12 to compete head to head, by designing, building, and programming a robot to compete in an alliance format against other teams.
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VEX.LZ.F2.0F38 F6 /r: Widening unsigned integer multiply without setting flags. Multiplies EDX/RDX with r/m, then stores the low half of the multiplication result in ra and the high half in rb. If ra and rb specify the same register, only the high half of the result is stored. PDEP ra,rb,r/m: VEX.LZ.F2.0F38 F5 /r: Parallel Bit Deposit.
Jump to an address picked from the IVT (Interrupt Vector Table) using the imm8 argument, similar to the 8086 INT instruction, but start executing as Intel 8080 code rather than x86 code. V20, V30, V40, V50 [32] BRKXA imm8: 0F E0 ib: Break to Extended Address Mode. Jump to an address picked from the IVT using the imm8 argument.