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[/] [potato/] [trunk/] [src/] [pp_execute.vhd] - Rev 54

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45 Merge branch cache-playground (r23-r30 and r34-r44) into trunk

This primarily adds the following features the the processor:
- A direct-mapped instruction cache with configurable cache line width and
number of cache lines.
- Various bug fixes for bugs that appeared when the processor could run
instructions at full speed but had to stall for data.
- A "Hello World" test application.
skordal 3446d 17h /potato/trunk/src/pp_execute.vhd
35 Prevent jumping/branching when stalling skordal 3446d 19h /potato/trunk/src/pp_execute.vhd
26 Prevent exceptions from being taken while stalling

Jumping to an exception handler while stalling and waiting for a load/store
instruction to finish can cause undefined results from the load/store
instruction. This actually fixes the issue mentioned in revision r20.
skordal 3460d 21h /potato/trunk/src/pp_execute.vhd
18 instr_misalign_check: add do_jump to sensitivity list skordal 3465d 16h /potato/trunk/src/pp_execute.vhd
17 Improve detection of unaligned instructions skordal 3469d 23h /potato/trunk/src/pp_execute.vhd
3 Fix bug reporting URL skordal 3491d 02h /potato/trunk/src/pp_execute.vhd
2 Initial commit skordal 3491d 04h /potato/trunk/src/pp_execute.vhd

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