On 1/5/21 11:43 AM, smf wrote: > I don't know. > > The PLA, VIC2, TED & 7501 had a lot of manufacturing issues. The VIC2 > had some design issues, for example the 64 clocks per line and > requirement of PLL to fix the dot crawl in the early days. Unless you use the color clock or a multiple of it as dot clock, you will have dot crawl. And if it's not a whole number multiple, you need a PLL or another circuit that can accomplish the same. Manufacturing issues aside, the chip designs were OK for back then. And the fact and a lot of them still work more than 30 years later does show their manufacturing quality wasn't too bad once they got the process figured out. TED and 7501/8501 had problems if made in 1984. Versions made later didn't die as easily. Do you think > the 6581 filters were well done? Compared to what? Which other soundchip with the capabilities of the 6581 existed back then? > I'm not saying that shipping something crappy is a bad strategy, it's > perfectly valid to build market share as long as you fix the issues and > you don't kill anyone in the meantime. They mostly did... Even the VDC got further revisions until it worked. GerritReceived on 2021-01-05 14:00:03
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