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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_rtc.vhd] - Rev 190

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190 Fixed a bug in CPU where RTI/RTS wasn't idling the instruction cache, causing intermittent failures where RTI would execute as RTS, corrupting the stack;
Fixed a bug in the real-time clock where the uSec tick generator would stop if the PIT timer value was left/set to 0x00.		 jshamlet 1550d 07h /open8_urisc/trunk/VHDL/o8_rtc.vhd
189 Merged changes from private repository,
added ceil_log2 function to Open8_pkg, since it is used to calculate RAM vectors,
cleaned up comments and removed local copies of the ceil_log2 function from peripherals.		 jshamlet 1551d 08h /open8_urisc/trunk/VHDL/o8_rtc.vhd
177 Fixed comments in RTC module jshamlet 2883d 10h /open8_urisc/trunk/VHDL/o8_rtc.vhd
176 Fixed documentation errors,
Modified uSec_Tick such that it is always generated regardless of the interval.		 jshamlet 2888d 08h /open8_urisc/trunk/VHDL/o8_rtc.vhd
172 General code cleanup jshamlet 3083d 08h /open8_urisc/trunk/VHDL/o8_rtc.vhd
168 Simplified write data path logic,
Converted RTC to packed BCD,
Corrected several bugs in real time clock component,		 jshamlet 3917d 05h /open8_urisc/trunk/VHDL/o8_rtc.vhd
167 Updated CPU model; Pipelined ALU control signals to improve fMAX, corrected issue with interrupt controller priority not being obeyed, fixed bug in auto-indexing instructions where the upper register wasn't being properly incremented, cleaned up code to make the processor model easier to follow.
Added several useful modules that use the Open8 bus.		 jshamlet 3925d 03h /open8_urisc/trunk/VHDL/o8_rtc.vhd

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