pk
2357b53997
Avoid race for the chip's interrupt pending status bits in zscnputc()
...
by introducing a single-character queue to defer kernel console output
until the transmitter interrupt handler runs.
1997-04-14 21:26:28 +00:00
mrg
65d186d8e8
find a couple minor nits from previous change.
1996-05-29 01:58:09 +00:00
pk
2f3ec93250
Various cleanup; mostly trailing spaces/tabs.
1996-03-31 22:38:29 +00:00
pk
a3ab0e81da
Use CPU-type macros.
1996-02-25 22:03:20 +00:00
gwr
427556aeab
Move struct definitions to MD code.
1996-01-24 19:52:57 +00:00
pk
ee08e9085b
Extend the size of the "soft" FIFOs which reportedly reduces the number
...
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.
1995-11-29 23:41:31 +00:00
mycroft
0c3bca646e
Move CHAN_[AB] into here, and prefix with ZS_.
1995-04-11 02:38:16 +00:00
deraadt
274a90762d
copyright/Id cleanup
1994-11-20 20:51:32 +00:00
deraadt
ad457d7aaf
sun4 needs software delays for register accesses
1994-08-20 09:11:02 +00:00
deraadt
4588caefaa
Chris Torek's sparc port. Missing lots of things.
1993-10-02 10:22:00 +00:00