tsutsui 3c5f553e65 Try to avoid zstty hangs on higher speed:
z8530sc.c:
 Check pending interrupts in a loop until all requests are handled.
 The old comments said it would cause horrible latency to sun3x floppy etc,
 but serial ports should have higher priority than disks anyway.

z8530tty.c:
 Don't enable and disable TX interrupts on each transmit start and completion
 because it could cause possible race conditions.
 Instead, set ZSWR0_RESET_TXINT on each TIE interrupt to clear the request
 as other kbd drivers attached at zs(4).

Tested on cobalt, macppc, news68k, sparc, and sun3.
2009-03-20 16:28:57 +00:00
2009-03-15 12:01:24 +00:00
2009-03-16 16:40:54 +00:00
2009-03-16 16:43:01 +00:00
2009-03-11 14:29:06 +00:00
2009-03-20 13:18:50 +00:00
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