twsi(3): fix wrong unicode codepoint in manpage
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.TH TWSI 3
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.TH TWSI 3
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.SH NAME
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.SH NAME
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twsi - two-wire serial interface (TWSI) and inter-integrated circuit (IC) interface
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twsi - two-wire serial interface (TWSI) and inter-integrated circuit (I²C) interface
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.SH SYNOPSIS
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.SH SYNOPSIS
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.B bind -a # /dev
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.B bind -a #² /dev
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.sp 0.3v
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.sp 0.3v
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.B /dev/twsi*
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.B /dev/twsi*
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.SH DESCRIPTION
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.SH DESCRIPTION
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The
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The
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.I twsi
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.I twsi
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device serves a one-level directory containing one file per TWSI or IC bus.
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device serves a one-level directory containing one file per TWSI or I²C bus.
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Bytes written are transmitted on the bus;
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Bytes written are transmitted on the bus;
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bytes received from the bus are queued and delivered by reading.
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bytes received from the bus are queued and delivered by reading.
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Seeking to a given offset before reading or writing causes the
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Seeking to a given offset before reading or writing causes the
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.IR write
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.IR write
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call.
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call.
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.SH FILES
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.SH FILES
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.B #/twsi*
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.B #²/twsi*
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.SH SOURCE
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.SH SOURCE
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.B /sys/src/9/*/devtwsi.c
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.B /sys/src/9/*/devtwsi.c
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.SH BUGS
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.SH BUGS
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