Search results
Results from the WOW.Com Content Network
Like the 68HC11, the 68HC12 has two 8-bit accumulators A and B (referred to as a single 16-bit accumulator, D, when A & B are cascaded so as to allow for operations involving 16 bits), two 16-bit registers X and Y, a 16-bit program counter, a 16-bit stack pointer and an 8-bit Condition Code Register. Unlike the 68HC11 the processor has 16bit ...
The concept was originally introduced by Hitachi as a way to improve the code density of their SuperH RISC processor design as it moved from 16-bit to 32-bit instructions in the SH-5 version. The new design had two instruction sets, one giving access to the entire ISA of the new design, and a smaller 16-bit set known as SHcompact that allowed ...
The computer can quickly read and write registers in the CPU, so the computer program runs faster when more variables can be in the CPU's registers. [1] Also, sometimes code accessing registers is more compact, so the code is smaller, and can be fetched faster if it uses registers rather than memory. However, the number of registers is limited.
A long double (eight bytes with Visual C++, sixteen bytes with GCC) will be 8-byte aligned with Visual C++ and 16-byte aligned with GCC. Any pointer (eight bytes) will be 8-byte aligned. Some data types are dependent on the implementation. Here is a structure with members of various types, totaling 8 bytes before compilation:
A POWER8 processor is a 6- or 12-chiplet design with variants of either 4, 6, 8, 10 or 12 activated chiplets, in which one chiplet consists of one processing core, 512 KB of SRAM L2 cache on a 64-byte wide bus (which is twice as wide as on its predecessor [1]), and 8 MB of L3 eDRAM cache per chiplet shareable among all chiplets. [5]
Bytecode (also called portable code or p-code) is a form of instruction set designed for efficient execution by a software interpreter.Unlike human-readable [1] source code, bytecodes are compact numeric codes, constants, and references (normally numeric addresses) that encode the result of compiler parsing and performing semantic analysis of things like type, scope, and nesting depths of ...
When returning struct/class, the calling code allocates space and passes a pointer to this space via a hidden parameter on the stack. The called function writes the return value to this address. Stack aligned on 16-byte boundary due to a bug.
An 8-bit register can store 2 8 different values. The range of integer values that can be stored in 8 bits depends on the integer representation used. With the two most common representations, the range is 0 through 255 (2 8 − 1) for representation as an binary number, and −128 (−1 × 2 7) through 127 (2 7 − 1) for representation as two's complement.