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[/] [ion/] [trunk/] - Rev 165

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Rev Log message Author Age Path
165 Added (very early draft, very incomplete) reserved opcode trap handler.
Updated opcode tester to test some emulated mips32 opcodes using the trap handler.
ja_rd 4816d 12h /ion/trunk/
164 Minor typo fixes in source file ja_rd 4816d 12h /ion/trunk/
163 SW simulator update:
Better disassembly format (hastily tested)
New parameters: start address, breakpoint address, whether or not to trap reserved opcodes
ja_rd 4816d 12h /ion/trunk/
162 Fixed stupid mistake in headers (date of project) ja_rd 4817d 04h /ion/trunk/
161 Added GPL license info to the vhdl headers
This project is becoming respectable :)
ja_rd 4817d 04h /ion/trunk/
160 BUG FIX: the cache init code was messing the BSS initialization ja_rd 4818d 06h /ion/trunk/
159 bug detected but not fixed in cpu
(1st instruction after entering user mode is executed in kernel mode)
ja_rd 4818d 12h /ion/trunk/
158 removed file from TB directory which was committed by mistake ja_rd 4818d 13h /ion/trunk/
157 Bug fix in the missing coprocesor exception.
The CPU was triggering a privilege exception for the mtc0 that went into user mode.
Logging HDL updated
ja_rd 4819d 22h /ion/trunk/
156 project doc somewhat updated (but still out of date) ja_rd 4820d 06h /ion/trunk/
155 Temporary warning added to outdated project doc file ja_rd 4820d 07h /ion/trunk/
154 fixed log trigger address in hello makefile ja_rd 4820d 08h /ion/trunk/
153 Added R3000 compatible support for kernel/user state:
- Implemented KU/IE plus KUp/IEp and KUo/IEo status bits
- Updated startup and test code to account for changes
- Implemented bit DID NOT TEST rfe instruction (not used in code)
- Access to CP0 in user mode triggers 'CpU' trap
- Updated software simulator

Besides, the logging of HI/LO register changes has been temporarily disabled, there's an unfixed bug in it.
ja_rd 4820d 08h /ion/trunk/
152 Added R3000 compatible support for kernel/user state:
- Implemented KU/IE plus KUp/IEp and KUo/IEo status bits
- Updated startup and test code to account for changes
- Implemented bit DID NOT TEST rfe instruction (not used in code)
- Access to CP0 in user mode triggers 'CpU' trap
- Updated software simulator

Besides, the logging of HI/LO register changes has been temporarily disabled, there's an unfixed bug in it.
ja_rd 4820d 08h /ion/trunk/
151 BUG FIX: major bugs fixed in cache module
1.- sram address was wrong (leftover from previous version)
2.- writes to unmapped areas were blocking the cache
3.- Sequence SW,LW produced a RAW data hazard in some cases
ja_rd 4820d 08h /ion/trunk/
150 Bug fix: added missing nop in vacant branch delay slot ja_rd 4821d 05h /ion/trunk/
149 changed size of simulated flash in opcodes sample code ja_rd 4821d 05h /ion/trunk/
148 Added optional cache support to 'opcodes' test.
Updated simulation length accordingly.
ja_rd 4822d 21h /ion/trunk/
147 SW simulator updated to latest HW revision
(plus a few mistakes corrected: wrongly commented out lines, mostly)
ja_rd 4822d 21h /ion/trunk/
146 Added D-Cache setup code to 'adventure' bootstrap code
(redundant since common C startup code already does it but...)
ja_rd 4822d 22h /ion/trunk/

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