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There were some changes in ROM adding support for disk drive, parallel printer and second timer chip as a sound generator (which was never installed in production units). A second universal I/O chip 8255 (MCY7855) has been added for communication with the floppy disk unit. [5] Version with ROM memory to reduced to 8 KB existed.
The JX-3P is a six-note polyphonic, 2 DCOs, 61 key synthesizer with sawtooth, 50 and 10% pulse waveforms, and a noise generator. It has 32 factory programs in ROM , and user memory for 32 programs. The JX-3P also features a built-in 128-step polyphonic sequencer that can be synchronized to external devices, such as drum machines, connected to ...
The Texas Instruments SN76489 is a programmable sound generator chip from the 1980s, used to create music and sound effects on computers and video game systems. Initially developed by Texas Instruments for its TI-99/4A home computer, it was later updated and widely adopted in systems like the BBC Micro , ColecoVision , IBM PCjr , Sega's Master ...
The controller was a microprocessor operated platform which used digital, solid state systems to produce the 7 signals provided by Federal Signal. Unlike the SiraTone, the MC had tones pre-loaded onto an audio ROM chip so there was no need for an analogue tone generator and timer circuit.
A programmable sound generator (PSG) is a sound chip that generates (or synthesizes) audio wave signals built from one or more basic waveforms, and often some kind of noise. PSGs use a relatively simple method of creating sound compared to other methods such as frequency modulation synthesis or pulse-code modulation. [1]
The generator may have additional sections to modify the basic signal. The 8088 for example, used a 2/3 duty cycle clock, which required the clock generator to incorporate logic to convert the 50/50 duty cycle which is typical of raw oscillators. Other such optional sections include frequency divider or clock multiplier sections. Programmable ...
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ATI improved quality control, manufacturing and availability of the API product line, re-establishing API as one of the leading American analog pro audio brands. New product introductions, including the Vision surround-capable studio console, as well as the re-engineering of the 1604 small-frame mixing console into the 1608 brought the API ...