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| author | sheldonh <sheldonh@FreeBSD.org> | 2000-03-02 14:54:02 +0000 |
|---|---|---|
| committer | sheldonh <sheldonh@FreeBSD.org> | 2000-03-02 14:54:02 +0000 |
| commit | 244b8ead7d31895ea1d7cfb075f4f7b33df35b0f (patch) | |
| tree | 2643b52af6138b0f24a698abf3673abbbf78fc7d /share/man/man4/ppbus.4 | |
| parent | b751643913f37cd82cb0231b0c05564aad5a23b4 (diff) | |
| download | FreeBSD-src-244b8ead7d31895ea1d7cfb075f4f7b33df35b0f.zip FreeBSD-src-244b8ead7d31895ea1d7cfb075f4f7b33df35b0f.tar.gz | |
Remove more single-space hard sentence breaks.
Diffstat (limited to 'share/man/man4/ppbus.4')
| -rw-r--r-- | share/man/man4/ppbus.4 | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/share/man/man4/ppbus.4 b/share/man/man4/ppbus.4 index 3ca7453..1ee649cc 100644 --- a/share/man/man4/ppbus.4 +++ b/share/man/man4/ppbus.4 @@ -178,7 +178,8 @@ operate at close to the same performance levels as an equivalent ISA plug-in card. .Pp At software level, you may implement the protocol you wish, using data and -address cycles as you want. This is for the IEEE1284 compatible part. +address cycles as you want. +This is for the IEEE1284 compatible part. Then, peripheral vendors may implement protocol handshake with the following status lines: PError, nFault and Select. @@ -224,7 +225,8 @@ states. .Pp At any time, the slave may want to send data to the host. This is only -possible from forward idle states (nibble, byte, ecp...). So, the +possible from forward idle states (nibble, byte, ecp...). +So, the host must have previously negotiated to permit the peripheral to request transfer. Interrupt lines may be dedicated to the requesting signals |
