Re: CIA old/new?

From: Ingo Korb <ml_at_akana.de>
Date: Mon, 18 Jan 2021 00:34:58 +0100
Message-ID: <86ft2zuogt.fsf_at_dragon.akana.de>
smf <smf_at_null.net> writes:

> 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.

Off-by-one errors happen quite often in software, it's not that
surprising that they occasionally make it to hardware.

Even more modern design approaches don't always avoid such problems: The
Nintendo Gamecube uses an audio sampling rate of 48042.7Hz instead of the
conventional 48000Hz. Someone accidentally derived the sample rate by
dividing a 54MHz base clock by 1124 instead of 1125. It it probably not
intentional as the Wii outputs exactly 48000Hz, but switches to
48042.7Hz while running Gamecube games.

-ik
Received on 2021-01-18 02:00:03

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