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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_alu16.vhd] - Rev 223

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223 Added an OPEN8_BUS_TYPE record to simplify connection to Open8 modules. The CPU now passes and Open8_Bus out, which supplies the bus address, write enable, write data, and read enable. Read data and interrupts are still handled as separate signals, since they are muxed/connected at the next level up. jshamlet 1523d 03h /open8_urisc/trunk/VHDL/o8_alu16.vhd
217 Broke out the vdsm8 as a separate entity, since it is used in several places,
Even MORE code cleanup.		 jshamlet 1524d 03h /open8_urisc/trunk/VHDL/o8_alu16.vhd
213 Code and comment cleanup jshamlet 1528d 04h /open8_urisc/trunk/VHDL/o8_alu16.vhd
194 Cleaned up licensing sections jshamlet 1538d 05h /open8_urisc/trunk/VHDL/o8_alu16.vhd
193 Fixed incorrect comment in o8_alu16.vhd. The value of the write to 0x1F doesn't matter, as the write itself triggers the calculation. jshamlet 1538d 06h /open8_urisc/trunk/VHDL/o8_alu16.vhd
191 Cleaned up comments, added back the OPEN8_NULLBUS constant, and added some new modules for ADCs and LCD displays.
Also made the button input module more configurable by moving the debounce code to a separate entity and using generics to instantiate it.		 jshamlet 1538d 06h /open8_urisc/trunk/VHDL/o8_alu16.vhd
172 General code cleanup jshamlet 3083d 04h /open8_urisc/trunk/VHDL/o8_alu16.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 3924d 23h /open8_urisc/trunk/VHDL/o8_alu16.vhd

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