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[/] [open8_urisc/] - Rev 174

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Rev Log message Author Age Path
174 Added ROM/RAM wrappers jshamlet 3089d 22h /open8_urisc/
173 Added a couple of useful interfaces for detecting button presses and clock changes. jshamlet 3089d 22h /open8_urisc/
172 General code cleanup jshamlet 3089d 22h /open8_urisc/
171 Fixed comments for offsets 0x0 - 0x3 to indicate the read value jshamlet 3089d 22h /open8_urisc/
170 Added 24-bit resolution epoch timer / alarm clock jshamlet 3089d 22h /open8_urisc/
169 Corrected issue with CMP and SBC generating an inverted carry flag and added new constants to the package file to simplify interfacing new modules. jshamlet 3144d 23h /open8_urisc/
168 Simplified write data path logic,
Converted RTC to packed BCD,
Corrected several bugs in real time clock component,		 jshamlet 3923d 19h /open8_urisc/
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 3931d 18h /open8_urisc/
166 fixed additional issues with range checking on PCREL relocations for open8, added test cases to verify, catch tree up with binutils datestamp 20120301 khays 4495d 19h /open8_urisc/
165 fixed issues with PC relative fixups in the linker khays 4497d 02h /open8_urisc/
164 Modified the data path to allow the bus to go idle while waiting for an interrupt. This makes it easier to debug code that uses the WAI instruction, as both Wr_Enable and Rd_Enable go low. jshamlet 4567d 13h /open8_urisc/
163 sync with binutils 2.22.51.20111114 khays 4605d 01h /open8_urisc/
162 Added optional generic to specify that the BRK instruction implements a WAit_for_Interrupt (WAI) instruction instead. Logically emulates INT, but without triggering a soft interrupt. Note that the NOP instruction maps to BRK, and will not function correctly if this option is set. jshamlet 4658d 06h /open8_urisc/
161 synchronize binutils/ with gnu dev tree of 2.21.53.20110828 khays 4682d 01h /open8_urisc/
160 synchronize binutils/gas with gnu dev tree of 2.21.53.20110828 khays 4682d 01h /open8_urisc/
159 synchronize binutils/gold with gnu dev tree of 2.21.53.20110828 khays 4682d 01h /open8_urisc/
158 synchronize binutils/opcodes with gnu dev tree of 2.21.53.20110828 khays 4682d 01h /open8_urisc/
157 synchronize binutils/ld with gnu dev tree of 2.21.53.20110828 khays 4682d 01h /open8_urisc/
156 Optimized for timing,
Flattened block structure to single entity.		 jshamlet 4714d 21h /open8_urisc/
155 Fixed additional interrupt logic bug,
Optimized several blocks - including ALU, stack, program counter, and data path.		 jshamlet 4715d 16h /open8_urisc/

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