Correct two grammos.
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@ -281,7 +281,7 @@ Actually, ppbus and adapter operating modes on one hands and for each
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one, current and available modes are separated.
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.Pp
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With this level of abstraction a particular chipset may commute from any
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native mode the any other mode emulated with extended modes without
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native mode to any other mode emulated with extended modes without
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disturbing upper layers.
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For example, most chipsets support NIBBLE mode as
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native and emulated with ECP and/or EPP.
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@ -307,7 +307,7 @@ This mode will be saved in the context structure and
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returned each time the driver requests the ppbus.
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.Ss Bus allocation and interrupts
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ppbus allocation is mandatory not to corrupt I/O of other devices.
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An other
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Another
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usage of ppbus allocation is to reserve the port and receive incoming
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interrupts.
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.Pp
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