diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-04-02 20:58:56 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-04-02 20:58:56 +0000 |
| commit | 1154e441aa19ce3bf15fb0cabab2a5656321b43f (patch) | |
| tree | 98ee9f158b5fd0bb3503f2defc610e598f65c31c /hw/i8254.c | |
| parent | e463b581ead04c1e5004e08c3bfb16e7fde88e20 (diff) | |
| download | qemu-1154e441aa19ce3bf15fb0cabab2a5656321b43f.tar.gz | |
avoid rounding problems
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@696 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/i8254.c')
| -rw-r--r-- | hw/i8254.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/i8254.c b/hw/i8254.c index 20cca0ef83..ad61a14af2 100644 --- a/hw/i8254.c +++ b/hw/i8254.c @@ -136,6 +136,10 @@ static int64_t pit_get_next_transition_time(PITChannelState *s, } /* convert to timer units */ next_time = s->count_load_time + muldiv64(next_time, ticks_per_sec, PIT_FREQ); + /* fix potential rounding problems */ + /* XXX: better solution: use a clock at PIT_FREQ Hz */ + if (next_time <= current_time) + next_time = current_time + 1; return next_time; } |