* Use machine/conf.h not sys/conf.h to get the prototypes for the
scn cdev functions.
* Include <sys/kgdb.h> to get prototypes for kgdb_connect and kgdb_attach.
* Add missing prototypes for some functions.
* Make ddb work before the console was opend. Thank's to Ian Dall
for this change. His comment:
Also, ddb doesn't work if a break is set before the console
is opened. That is because DTR and RTS are not asserted. It
would probably work if the console is wired to ingnore DTR
or RTS. The change below is probably not very correct.
Proabably the state of DTR and RTS should be saved and DTR
and RTS asserted on the start of a polled serial input and
the saved values restored on exiting polled input
* Remove unused function scn_ei.
* Add prototype for ncr_ready.
* Add ncr_wait_not_req function from Ian Dall:
The ncr_wait_not_req business is to avoid a potential race.
When the pseudo DMA finishes, the target may not have
lowered REQ yet. If we just charge ahead, we eventually test
for phase when REQ is high. However, if REQ has not yet gone
low for the last byte transferred, this will be the wrong
phase. This is taken from the dp8490 application notes. The
last ACK is not deasserted until the dma is completed.
Deasserting the last ACK should be delayed until the last
REQ is deasserted. I am not sure if there are ever devices
this slow, but I believe the code is "more correct".
* Add missing prototypes.
* Move over softnet() from intr.c.
* Establish softnet and softclock interrupts in init532.
* Misc cleanup to get it compiled with the new CWARNFLAGS.
of the ICU in clock_attach.
* Pull over (and reformat) rtc_rw from mem.c.
* Convert the rtc driver to use /sys/dev/clock_subr.c (partially by
stealing code from the sun3 port).
into 8 bits generate (bogus) warnings on some architectures, but the
change to pad on "scsi inquiry" is no longer needed, apparently.
Thanks to Matthias Pfaller for pointing the latter out to me.
breaks zero-extension of the 16-bit memory size return from the BIOS.
on at least one system, the trash left in the upper half of %eax
causes the kernel to crash during VM system initialization when it
thinks it has on the order of 2**31 bytes of memory to play with.
We now *say* mov %eax,%ebx, but *mean* mov %ax,%bx..
