Am Samstag, 29. August 2020, 03:36:47 CEST schrieb tokafondo: > Everybody building a SBC that wants sound output gets to the same wall: > There are not sound generators, or programmable sound generators, or such > kind of chips available like they were 30 years ago. Yes, you can get them > a pulled ones, or old stock, or you can go the FPGA, PIC or Arduino route > and get one of those sound cores that end being more powerful than the SBC > itself, just to get SID or FM sound. > > There has been discussions about getting funcion generator chips, couple > them to an external amplifier chip, and use them to generate waveforms based > basic sounds. > > And I even read recently as having a 6502 CPU in a SBC just to generate > sound. > > So... How difficult could be to get a 65xx CPU, have it generate a waveform > with its ADSR settings, process it applying filters or whatever, and > bitbanging it to a DAC, to generate sound? > > In another words: how feasible would be to implement a sort of SID (or > whatever other generic PSG chip) engine in a 65xx chip, that could be used > inside the same cpu, or act as an external sound chip for a main CPU? Do > exist such a thing? it wasnt uncommon to do this in arcade machines, for example. entirely possible. you wont get fancy filters, but everything else isnt terribly hard to do. -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net Terror ist der Krieg der Armen gegen die Reichen. Krieg ist der Terror der Reichen gegen die Armen. <Sir Peter Ustinov>Received on 2020-08-29 12:00:03
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