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[/] [open8_urisc/] - Rev 167

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Rev Log message Author Age Path
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 4162d 19h /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 4726d 21h /open8_urisc/
165 fixed issues with PC relative fixups in the linker khays 4728d 04h /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 4798d 15h /open8_urisc/
163 sync with binutils 2.22.51.20111114 khays 4836d 03h /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 4889d 08h /open8_urisc/
161 synchronize binutils/ with gnu dev tree of 2.21.53.20110828 khays 4913d 03h /open8_urisc/
160 synchronize binutils/gas with gnu dev tree of 2.21.53.20110828 khays 4913d 03h /open8_urisc/
159 synchronize binutils/gold with gnu dev tree of 2.21.53.20110828 khays 4913d 03h /open8_urisc/
158 synchronize binutils/opcodes with gnu dev tree of 2.21.53.20110828 khays 4913d 03h /open8_urisc/
157 synchronize binutils/ld with gnu dev tree of 2.21.53.20110828 khays 4913d 03h /open8_urisc/
156 Optimized for timing,
Flattened block structure to single entity.
jshamlet 4945d 23h /open8_urisc/
155 Fixed additional interrupt logic bug,
Optimized several blocks - including ALU, stack, program counter, and data path.
jshamlet 4946d 18h /open8_urisc/
154 Fixed problem with missing data path override in interrupt logic. Should resolve issues with processor crashing when an interrupt occurs as a STO instruction is being executed. jshamlet 4951d 21h /open8_urisc/
153 Fixed bug in interrupt logic that caused stack pointer to increment if interrupt occurred as specific instructions were being decoded,
Fixed bug in interrupt logic where instruction caching would remain enabled during an interrupt, causing improper execution depending on what instruction was in the decode stage as the interrupt is trigered.
jshamlet 4978d 16h /open8_urisc/
152 Correct the descriptions for GMSK and SMSK instructions in the Open8 Assembly Language Reference khays 4986d 19h /open8_urisc/
151 Fixed STO instruction and interrupt logic to avoid address bus corruption issues. jshamlet 4988d 19h /open8_urisc/
150 Updated the assembly language reference to add the CLR pseudo-mnemonic khays 4989d 03h /open8_urisc/
149 added clr "Clear Accumulator" pseudo-instruction khays 4989d 05h /open8_urisc/
148 catch up with binutils trunk through date-version 20110613 khays 4989d 23h /open8_urisc/
147 GNU binutils port for Open8 - addition of all remaining files khays 4998d 17h /open8_urisc/
146 GNU binutils port for Open8 - addition of gas/testsuite/gas/tic6x files khays 4998d 17h /open8_urisc/
145 GNU binutils port for Open8 - addition of remaining ld/ files khays 4998d 17h /open8_urisc/
144 GNU binutils port for Open8 - addition of gas/testsuite/gas/z8k files khays 4998d 17h /open8_urisc/
143 GNU binutils port for Open8 - addition of gas/testsuite/gas/z80 files khays 4998d 17h /open8_urisc/
142 GNU binutils port for Open8 - addition of gas/testsuite/gas/xtensa files khays 4998d 17h /open8_urisc/
141 GNU binutils port for Open8 - addition of gas/testsuite/gas/xstormy16 files khays 4998d 17h /open8_urisc/
140 GNU binutils port for Open8 - addition of gas/testsuite/gas/xc16x files khays 4998d 17h /open8_urisc/
139 GNU binutils port for Open8 - addition of gas/testsuite/gas/vax files khays 4998d 17h /open8_urisc/
138 GNU binutils port for Open8 - addition of gas/testsuite/gas/v850 files khays 4998d 17h /open8_urisc/

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