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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 ...
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 ...
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.
The binary signal is encoded using rectangular pulse-amplitude modulation with polar return-to-zero code. Return-to-zero (RZ or RTZ) describes a line code used in telecommunications signals in which the signal drops (returns) to zero between pulses. This takes place even if a number of consecutive 0s or 1s occur in the signal. The signal is ...
RP2040-Zero [33] Waveshare Electronics 23×18 23 USB-C 10-pad connector 2 MB 29 4 BOOTSEL + RESET RGB LED (WS2812) Pico2040 zeankun.dev 51x18 40+3 (2mm and 2.54mm variants are available) SWD 4 micro-USB 16 MB, 32 MB, 64 MB, 128 MB 28 4 BOOTSEL + RESET Bus Pirate 5 Where Labs, LLC 60x37 10+9 SWD USB-C 16MB W5100S-EVB-Pico [34] WIZnet Co., Ltd ...
The binary signal is encoded using rectangular pulse-amplitude modulation with polar NRZ(L), or polar non-return-to-zero-level code. In telecommunications, a non-return-to-zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with ...
Register 0 (R0) is fixed as the Zero Register which always contains zero. In the V850, R30 is implicitly used by the sld and sst instructions. 16-bit short-format load/store instructions use element pointer (ep) , where the addressing mode comprises the base address register ep and immediate-operand offsets.
The ROM address space is 512 and may only specify addresses in the first half of each 512-word page. That is, the CALL instruction specifies the low 9 bits of the address, but only the low 8 bits of that address are a parameter of the instruction, while the 9th bit (bit 8) is implicitly specified as 0 by the CALL instruction itself.