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One of the computers known to be based on this processor is the educational WDR 1-bit computer (512 bits of RAM, LED, I/O, keyboard). [4] A modern take, in retro style, of a computer based on this processor is the PLC14500-Nano. It is certified as Open Source Hardware PL000011 so anyone can learn from its design and can freely build it.
The Ricoh 2A03's sound hardware has 5 channels, separated into two APUs (Audio Processing Units). The first APU contains two general purpose pulse channels with 4 duty cycles, and the second APU contains a triangle wave generator, an LFSR-based Noise generator, and a 1-bit Delta modulation-encoded PCM (DPCM) channel. While a majority of the NES ...
Audison is one of the brands of the Italian company Elettromedia s.r.l., a manufacturer of car audio products. The company was founded in 1979, but Audison name (born from Latin words Audio and Sonus) was registered in 1984. Currently Audison has different kinds of mobile audio products: amplifiers, audio processors, speakers and subwoofers.
A serial computer processes data a single bit at a time. For example, the PDP-8/S was a 12-bit computer using a 1-bit ALU, processing the 12 bits serially. [2]An example of a 1-bit computer built from discrete logic SSI chips is the Wang 500 (1970/1971) calculator [3] [4] as well as the Wang 1200 (1971/1972) [5] word processor series developed by Wang Laboratories.
The FPU in the 68040 was incapable of IEEE transcendental functions, which had been supported by both the 68881 and 68882 and were used by the popular fractal generating software of the time and little else. The Motorola floating point support package (FPSP) emulated these instructions in software under interrupt.
At 1 bit per pixel, this occupied 23 KB of RAM which was far too large for the Z80 CPU to scroll in software without ripple and tearing of the display. Instead, the PCW implemented a Roller RAM consisting of a 512-byte area of RAM that held the address of each line of display data. The screen could now be scrolled either by changing the Roller ...
In processors supporting extended addressing, the address space is divided into "sections". An 18-bit address is a "local address", containing an offset within a section, and a "global address" is 30 bits, divided into a 12-bit section number at the bottom of the left 18 bits and an 18-bit offset within that section in the right 18 bits.
The 6809 was among the most powerful (and most expensive) 8-bit processors of its era. In 1981 a 6809 in single-unit quantities was $37 compared to $9 for a Zilog Z80 and $6 for a 6502. [ 1 ] It was launched when a new generation of 16-bit processors were coming to market, like the Intel 8086 , and 32-bit designs were on the horizon, including ...