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Improve wording for pccard memory assignement.

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Document intended correct behavior for pccardc power and how it interacts
with suspend/resume.
This commit is contained in:
Warner Losh 2001-07-27 06:32:20 +00:00
parent c22d511680
commit c5a7a65261
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=80436
1 changed files with 11 additions and 4 deletions
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15
usr.sbin/pccard/pccardc/pccardc.8
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@ -56,7 +56,7 @@ Print command summary
.It Ic pccardmem
Allocate memory for pccard driver
.It Ic power
Power on/off slots
Power on/off slots and leaves them disabled
.It Ic rdattr
Read attribute memory
.It Ic rdmap
@ -154,8 +154,9 @@ Prints help for
.Pp
Specifies the host address using PC-CARD controller(PCIC)
will use to map cards to.
Because the PCIC needs a contiguous 16KB memory,
you can only use the following four addresses:
Because the PCIC needs a contiguous 16KB memory, and most machines
have other ROMs or devices at other places in the ISA I/O memory
address range, generally you can only use the following four addresses:
.Pp
.Bl -tag -width 0xd0000 -compact
.It Ar 0xd0000
@ -185,9 +186,15 @@ Turn off a power supply.
If a card becomes unstable when it is removed at
activate state,
this can force it into inactive state first and remove it safely.
The slot will remain disabled until you eject the card with the system
running or reenable the card with another
.Ic pccardc power
power command.
The slot will even remain disabled when you suspend and resume the
computer.
.It Li 1
Turn on a power supply and set it into active state
(similar to a card insertion).
(the system treats the card as if it was just inserted).
.El
.Pp
.It