: The assumption that an I/O port address is lower than 0x8000 is OK for
: IBM-PC's ISA-bus, but PC98 can use hiher addresses for ISA-bus like
: bus.
:
:I understand. I think the best thing is to store the port address as an
:int. I don't think there is a need to fork the file into a pc98 version.
The type of the member id_port in isa_device structure is signed short
and a value is converted int unsigned long to allocate I/O port
resource via bus_alloc_resources. If an I/O port = 0x8000,
conversion from signed short to unsigned long causes unexpected result
and nexus_alloc_resouce cannot
On Sat, 24 Apr 1999, KATO Takenori wrote:
The type of the member id_port in isa_device structure is signed short
and a value is converted int unsigned long to allocate I/O port
resource via bus_alloc_resources. If an I/O port = 0x8000,
conversion from signed short to unsigned long causes
Doug Rabson d...@nlsystems.com wrote:
It needs to be signed since the value -1 is used to indicate no port
resources. Perhaps it would be better to change it to 'int' instead of
'u_short'.
Oops, I didn't realize this case.
The assumption that an I/O port address is lower than 0x8000 is OK
Singed shorts are often the result of sitting on a stove during the
summer.
We also recently saw a hanging root device to... in a boot on one of our
machines.
:-)
Robert N Watson
rob...@fledge.watson.org http://www.watson.org/~robert/
PGP key fingerprint: AF B5 5F FF A6 4A
On Sun, 25 Apr 1999, KATO Takenori wrote:
Doug Rabson d...@nlsystems.com wrote:
It needs to be signed since the value -1 is used to indicate no port
resources. Perhaps it would be better to change it to 'int' instead of
'u_short'.
Oops, I didn't realize this case.
The assumption
Singed shorts are often the result of sitting on a stove during the
summer.
We also recently saw a hanging root device to... in a boot on one of our
machines.
You'll see the 'c' up above all of the SCSI device probe messages. Not
sure how we go about making that one tidy.
--
\\
Doug Rabson once stated:
= If this should not be in sys/i386/isa, I will copy this file into
= sys/pc98/pc98. Comment please.
=
=It needs to be signed since the value -1 is used to indicate no port
=resources. Perhaps it would be better to change it to 'int' instead of
='u_short'.
Uff, waisting
