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[/] [ion/] [trunk/] [src/] [opcodes/] [opcodes.s] - Rev 168

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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 4814d 17h /ion/trunk/src/opcodes/opcodes.s
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 4818d 13h /ion/trunk/src/opcodes/opcodes.s
150 Bug fix: added missing nop in vacant branch delay slot ja_rd 4819d 11h /ion/trunk/src/opcodes/opcodes.s
148 Added optional cache support to 'opcodes' test.
Updated simulation length accordingly.		 ja_rd 4821d 02h /ion/trunk/src/opcodes/opcodes.s
110 Updated 'opcodes' code sample:
- Longer simulated time for compatibility to new cache		 ja_rd 4881d 16h /ion/trunk/src/opcodes/opcodes.s
90 Added 'Adventure' demo to be run from the DE-1 FLASH ja_rd 4925d 13h /ion/trunk/src/opcodes/opcodes.s
66 Code samples:
Updated all code samples to use TB2 template and new memory map		 ja_rd 4936d 03h /ion/trunk/src/opcodes/opcodes.s
38 Minor changes in header comments ja_rd 4942d 12h /ion/trunk/src/opcodes/opcodes.s
29 opcode test updated:
supports CP0 cause register and traps in delay slots
tests that traps abort next instruction in all cases		 ja_rd 4944d 10h /ion/trunk/src/opcodes/opcodes.s
25 opcode test:
HO and LO registers tested along with mul/div and not separately		 ja_rd 4944d 15h /ion/trunk/src/opcodes/opcodes.s
14 Opcode test now has mul/div tests enabled by default ja_rd 4946d 02h /ion/trunk/src/opcodes/opcodes.s
9 Trap handling now works as in the MIPS specs:
EPC points to victim instruction (break/syscall)
Opcode test modified accordingly		 ja_rd 4947d 03h /ion/trunk/src/opcodes/opcodes.s
4 New test for BREAK: abortion of load and jump
Added comment to readme file		 ja_rd 4947d 06h /ion/trunk/src/opcodes/opcodes.s
2 First commit (includes 'hello' demo) ja_rd 4947d 16h /ion/trunk/src/opcodes/opcodes.s

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