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  2. WDC 65C816 - Wikipedia

    en.wikipedia.org/wiki/WDC_65C816

    In the latter case, an implied bank $00 is used to generate the effective address. [16] A further addition to the register set is the 16-bit direct page register (DP), which sets the base address for what was formerly called the zero page, but now referred to as direct page. Direct page addressing uses an 8-bit address, which results in faster ...

  3. Zero page - Wikipedia

    en.wikipedia.org/wiki/Zero_page

    The zero page or base page is the block of memory at the very beginning of a computer's address space; that is, the page whose starting address is zero. The size of a page depends on the context, and the significance of zero page memory versus higher addressed memory is highly dependent on machine architecture.

  4. TI MSP430 - Wikipedia

    en.wikipedia.org/wiki/TI_MSP430

    VisSim, a block diagram language for model based development, generates efficient fixed point C-Code directly from the diagram. [13] VisSim generated code for a closed loop ADC+PWM based PID control on the F2013 compiles to less than 1 KB flash and 100 bytes RAM. [14] VisSim has on-chip peripheral blocks for the entire MSP430 family I²C, ADC ...

  5. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    The Sega 32X uses PWM to play sample-based sound in its games. In more recent times, the Direct Stream Digital sound encoding method was introduced, which uses a generalized form of pulse-width modulation called pulse-density modulation , at a high enough sampling rate (typically in the order of MHz) to cover the whole acoustic frequencies ...

  6. MOS Technology 6502 - Wikipedia

    en.wikipedia.org/wiki/MOS_Technology_6502

    With the 5/6 cycle "(indirect),y" mode, the 8-bit Y register is added to a 16-bit base address read from zero page, which is located by a single byte following the opcode. The Y register is therefore an index register in the sense that it is used to hold an actual index (as opposed to the X register in the 6800, where a base address was ...

  7. Zero page (CP/M) - Wikipedia

    en.wikipedia.org/wiki/Zero_page_(CP/M)

    The Zero Page (or Base Page) is a data structure used in CP/M systems for programs to communicate with the operating system. In 8-bit CP/M versions it is located in the first 256 bytes of memory , hence its name.

  8. Chopper (electronics) - Wikipedia

    en.wikipedia.org/wiki/Chopper_(electronics)

    The average output voltage is directly proportional to the ON time of chopper. The ratio of ON time to total time is defined as duty cycle. It can be varied between 0 and 1 or between 0 and 100%. Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a technique used to encode a message into a pulsing signal.

  9. RL78 - Wikipedia

    en.wikipedia.org/wiki/RL78

    The RL78 family is an accumulator-based register-bank CISC instruction set architecture (ISA). [2] Although it has eight 8-bit registers or four 16-bit register pairs, essentially all arithmetic operations are performed on a single accumulator (the A register or AX register pair).