fixed timing on OSes that set a minimum time for sleeps (previously the main loop code assumed no minimum sleep time; the new version uses longer sleeps less frequently)
default tip
andrew
Sat, 19 Apr 2014 02:19:39 -0600
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added RTC emulation (attempts to set the date are ignored, and the year is currently hardcoded to 1987 because UNIX PC SysV has a few Y2K bugs)
andrew
Fri, 18 Apr 2014 01:34:20 -0600
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treat all DMA reads/writes as kernel mode (previously it would depend on whether the processor happens to be in user mode or kernel mode when the DMA completes, which is totally incorrect); handle 32-bit accesses that straddle page boundaries properly (all 32-bit accesses are now split into two 16-bit accesses); allow reads to the entire zero page, rather than just address 0
andrew
Fri, 18 Apr 2014 01:26:01 -0600
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disabled seek delay on WD2010 (Unix seems to work fine without it)
andrew
Thu, 17 Apr 2014 01:58:05 -0600
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ignore out-of-range addresses on low-level format commands (s4diag formats once sector past the end of each track)
andrew
Thu, 17 Apr 2014 01:50:41 -0600
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fixed bus error handling for real this time (save registers before every instruction and push the saved registers if a bus error occurs, since the instruction may have changed registers before the bus error, and also stop the instruction immediately with longjmp so it won't change memory after the bus error)
andrew
Wed, 16 Apr 2014 02:20:43 -0600
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