of FIFO overflows on high baud rates.
However, doing so on all 4 ports would cost a whopping 64KB (at 4096 entries
per FIFO) of kernel memory. So, the FIFOs are now allocated at attach time
allowing the size for the keyboard and mouse ports to be reduced (to 128)
which should be adequate for the 1200 baud they use.
- properly do MSG_IN handshaking, so we can actually receive multi-byte msgs.
- do synch negotiation (now that the above works).
- handle disconnects.
There are a few trial-and-error bits at points where the docs I have are
particularly ambiguous about the state of chip and/or SCSI bus.
Things to do:
- more cleanup
- deal with MSG_OUT phase better
- keep some "config reg 3" bits per target (ie. FASTCLK and FASTSCSI).
* It compiles (and links).
* Make use of "/emul/hpux" where applicable.
* Untangle a bit, pulling some funtions from the monolithic
hpux_compat.c into hpux_file.c, hpux_exec.c, etc.
* Fix a couple of bugs.
Yet to do:
* Move hp300-specific functions into hp300/hp300/hpux_machdep.c.
* Make everything work properly (you laugh...)
These changes are sufficient to run some simple HP-UX 9.x executables,
including ls(1) (which will read password and group information from the
YP server correctly, albeit slowly), a simple "hello world", uname(1),
and a few other odds and ends. Dynamically linked executables work, and
demand-paging _seems_ to work properly. Major problems:
* socket and/or signal handling appears to need some work yet.
* 99% sure I didn't do exactly the right thing adjusting for the
fact that "kstack" is gone now.
* ktrace(1)'ing some executables (HP-UX telnet(1) is what I tried)
causes the HP-UX executable to dump core with a SIGSEGV for an
as of yet unknown reason.
This is mostly meant as a checkpoint/snapshot, to make it easier for others
to track progress on this code, and hack on it themselves. It's certainly
better off now than before.
pk