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Adjusted retro target clock to "new" DNS resolver.

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The DNS resolver requires 1/4 sec clock resolution. The retro targets had a 1/2 sec clock resolution (optimized for the 1/2 sec TCP timer) resulting in DNS resolver timeouts being 0. Therefore the retro target clock resolution is now increased to 1/4 sec.
This commit is contained in:
Oliver Schmidt 2015-08-04 13:48:08 +02:00
parent ab6d6498fe
commit ca2552461e
3 changed files with 4 additions and 7 deletions
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7
cpu/6502/sys/clock.c
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@ -45,11 +45,8 @@ clock_time(void)
* of overhead for cc65 targets.
* On the other hand we want to avoid wrapping around frequently so the idea
* is to reduce the clock resolution to the bare minimum. This is defined by
* the TCP/IP stack using a 1/2 second periodic timer. So CLOCK_CONF_SECOND
* needs to be defined at least as 2.
* The value 2 works out especially nicely as it allows us to implement the
* clock frequency devider below purely in (32 bit) integer arithmetic based
* on the educated guess of CLK_TCK being an even value. */
* the DNS resolver using a 1/4 second timer. So CLOCK_CONF_SECOND needs to
* be defined at least as 4. */
return clock() / (CLK_TCK / CLOCK_CONF_SECOND);
}
/*---------------------------------------------------------------------------*/