Commit Graph

21 Commits

Author SHA1 Message Date
Luke Wren 28b53ef7b5 Delete the AMO ALU. Save around 80 LCs vs original implementation, maybe enables some more savings. 2021-12-18 00:35:13 +00:00
Luke Wren 7485269ddf Use the branch target adder for load/store addresses. Preparing for AMO ALU deletion 2021-12-17 22:36:40 +00:00
Luke Wren b0d28447ab New license headers: DWTFPL -> Apache 2.0 2021-12-13 23:23:40 +00:00
Luke Wren 0b3629564c Don't apply shifter assertions to rotates 2021-12-06 18:12:23 +00:00
Luke Wren 5c098866f2 Sketch in AMO support 2021-12-04 20:46:39 +00:00
Luke Wren 34e57f0b14 Sketch in an AMO ALU 2021-12-04 18:52:41 +00:00
Luke Wren c8afb4ac33 Add option for fast high-half multiplies 2021-11-29 18:48:02 +00:00
Luke Wren 800b21d2f5 Remove event feedback path (not logical path) in priority encoder 2021-11-28 02:19:01 +00:00
Luke Wren 14a4f1a281 Add bitmanip reference vectors and test scripts. Fix bug in bclr implementation 2021-11-27 17:19:41 +00:00
Luke Wren 5d093487b7 Update README 2021-11-26 23:33:46 +00:00
Luke Wren 1bb7e33b69 Fix alignment of heap_ptr in init.S. Small ALU cleanup 2021-11-26 02:59:50 +00:00
Luke Wren 8bcec11c80 Couple more silly mistakes 2021-11-26 01:30:13 +00:00
Luke Wren 41eeb90c7d Remove (safe) feedback path which Verilator linted on -- CXXRTL doesn't hate me any more 2021-11-26 01:29:47 +00:00
Luke Wren 998f3fdeb7 Clean up silly mistakes 2021-11-26 00:55:57 +00:00
Luke Wren 58c20a39d0 First pass at implementing bitmanip. Breaks CXXRTL. Ooop 2021-11-25 23:30:35 +00:00
Luke Wren e05e9a4109 Add default_nettype none at top of every file, and default_nettype wire at bottom 2021-11-23 22:10:39 +00:00
Luke Wren 8cdde82248 Coding style tweaks for ALU to workaround upstream Yosys issue, see #1 and friends 2021-07-20 00:13:26 +01:00
Luke Wren af684c4e82 Some cleanup; correctly decode 16-bit EBREAK 2021-06-03 20:03:43 +01:00
Luke Wren 844fa8f97f Rename hazard5 -> hazard3 2021-05-21 03:46:29 +01:00
Luke Wren 5de4f01aae Change how constants are plumbed through the hierarchy. Some small cleanups of variable declaration order etc 2021-05-21 03:23:44 +01:00
Luke Wren 6dad4e20bb Import from hazard5 9743a1b 2021-05-21 02:34:16 +01:00