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Apple UniNorth 2 AGP used in PowerPC 74xx Based Macs. Apple used their own type of northbridges which were custom ASICs manufactured by VLSI(later Philips),Texas Instruments and Lucent (later agere systems) List of Northbridge for PowerPC: IBM: CPC 700 and CPC 710 for IBM PowerPC 750 series. CPC 925 and CPC 945 for IBM PowerPC 970 series.
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New opcodes that introduced new functionality (e.g. SHLD, SETcc) For instruction forms where the operand size can be inferred from the instruction's arguments (e.g. ADD EAX,EBX can be inferred to have a 32-bit OperandSize due to its use of EAX as an argument), new instruction mnemonics are not needed and not provided.
A listing of the opcodes/instructions supported by the 72291 is available. [34] BRKEM imm8: 0F FF ib: Break to 8080 emulation mode. 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 ...
The Motorola 6800 microprocessor was the first for which an undocumented assembly mnemonic HCF became widely known. The operation codes (opcodes—the portions of the machine language instructions that specify an operation to be performed) hexadecimal 9D and DD were reported and given the unofficial mnemonic HCF in a December 1977 article by Gerry Wheeler in BYTE magazine on undocumented ...
Opcode for OR 0,0,0. [7] LDI 26,0: 4 0x34000034 Palindromic NOP - that is, an instruction that executes as NOP regardless of whether byte order is interpreted as little-endian or big-endian. Some PA-RISC system instructions are required to be followed by seven palindromic NOPs. [7] POWER, PowerPC, Power ISA: NOP: 4 0x60000000 Opcode for ori r0 ...
As of 2019, no PowerPC-based game consoles are currently in production. The most recent release, Nintendo's Wii U, has since been discontinued and succeeded by the Nintendo Switch (which uses a Nvidia Tegra ARM processor). The Wii Mini, the last PowerPC-based game console to remain in production, was discontinued in 2017. [citation needed]
In computing, an opcode (abbreviated from operation code) [1] [2] is an enumerated value that specifies the operation to be performed. Opcodes are employed in hardware devices such as arithmetic logic units (ALUs), central processing units (CPUs), and software instruction sets. In ALUs, the opcode is directly applied to circuitry via an input ...