Luke Kenneth Casson Leighton [Fri, 15 May 2020 19:19:03 +0000 (20:19 +0100)]
use small br_ext function to morph branch address
Luke Kenneth Casson Leighton [Fri, 15 May 2020 19:15:06 +0000 (20:15 +0100)]
missed some variables in the cleanup
Luke Kenneth Casson Leighton [Fri, 15 May 2020 19:13:55 +0000 (20:13 +0100)]
minor cleanup
Michael Nolan [Fri, 15 May 2020 19:06:34 +0000 (15:06 -0400)]
Oops, looks like I forgot to push the wiki update
Michael Nolan [Fri, 15 May 2020 19:04:22 +0000 (15:04 -0400)]
Begin implementing conditional branch
Luke Kenneth Casson Leighton [Fri, 15 May 2020 19:04:47 +0000 (20:04 +0100)]
flip over to CompBROpSubset
Luke Kenneth Casson Leighton [Fri, 15 May 2020 18:58:47 +0000 (19:58 +0100)]
add branch input record
Michael Nolan [Fri, 15 May 2020 18:51:00 +0000 (14:51 -0400)]
Add ability to specify initial CR state
Michael Nolan [Fri, 15 May 2020 18:38:52 +0000 (14:38 -0400)]
Implement signed branch immediates
Michael Nolan [Fri, 15 May 2020 18:33:42 +0000 (14:33 -0400)]
Change nia input to cia, implement linking
Michael Nolan [Fri, 15 May 2020 18:25:24 +0000 (14:25 -0400)]
Simplify main_stage.py
Michael Nolan [Fri, 15 May 2020 18:25:17 +0000 (14:25 -0400)]
Fix broken test_ba
Michael Nolan [Fri, 15 May 2020 18:20:14 +0000 (14:20 -0400)]
Implement relative branches, add explicit NIA input to pipe_data
Michael Nolan [Fri, 15 May 2020 18:01:12 +0000 (14:01 -0400)]
add branch to absolute address
Michael Nolan [Fri, 15 May 2020 17:40:08 +0000 (13:40 -0400)]
Add rudimentary branch unit test bench
Michael Nolan [Fri, 15 May 2020 17:39:41 +0000 (13:39 -0400)]
Update to latest wiki - add branch unit for branch instructions
Michael Nolan [Fri, 15 May 2020 16:59:16 +0000 (12:59 -0400)]
Implement OP_CMPEQB
Michael Nolan [Fri, 15 May 2020 16:59:01 +0000 (12:59 -0400)]
Update to latest wiki version - add definition for cmpeqb
Michael Nolan [Fri, 15 May 2020 16:52:33 +0000 (12:52 -0400)]
Ooops, actually assert during cmpeqb
Michael Nolan [Fri, 15 May 2020 16:33:39 +0000 (12:33 -0400)]
Add test for cmpeqb
Michael Nolan [Fri, 15 May 2020 15:27:42 +0000 (11:27 -0400)]
Add test for cntlz to test_caller
Luke Kenneth Casson Leighton [Fri, 15 May 2020 16:29:57 +0000 (17:29 +0100)]
add cookie-cut version of branch, copied from Logical, name changes TODO
Michael Nolan [Fri, 15 May 2020 15:16:48 +0000 (11:16 -0400)]
Add gitignore to shift_rot and logical formal folders
Michael Nolan [Fri, 15 May 2020 15:15:54 +0000 (11:15 -0400)]
Re-enable popcnt in test_pipe_caller.py
Michael Nolan [Fri, 15 May 2020 15:11:41 +0000 (11:11 -0400)]
Add test for popcnt to test_caller.py
Michael Nolan [Fri, 15 May 2020 14:22:28 +0000 (10:22 -0400)]
Fix prty implementation
Michael Nolan [Fri, 15 May 2020 14:21:52 +0000 (10:21 -0400)]
Add test for prtyw pseudocode
Michael Nolan [Fri, 15 May 2020 14:21:30 +0000 (10:21 -0400)]
Update to latest wiki version, fix bug in prty pseudocode
Luke Kenneth Casson Leighton [Fri, 15 May 2020 13:19:53 +0000 (14:19 +0100)]
add count leading zero test into logical test_pipe_caller.py
Luke Kenneth Casson Leighton [Fri, 15 May 2020 13:15:41 +0000 (14:15 +0100)]
link countzero in to Logical pipeline
Luke Kenneth Casson Leighton [Fri, 15 May 2020 12:58:57 +0000 (13:58 +0100)]
output countzero ilang
Luke Kenneth Casson Leighton [Fri, 15 May 2020 12:54:20 +0000 (13:54 +0100)]
remove countzero vhdl tb code
Luke Kenneth Casson Leighton [Fri, 15 May 2020 11:43:30 +0000 (12:43 +0100)]
swap encode responses, 3210 not 0123 for left mode
Luke Kenneth Casson Leighton [Fri, 15 May 2020 11:28:15 +0000 (12:28 +0100)]
add some more tests to countzero
Luke Kenneth Casson Leighton [Fri, 15 May 2020 11:18:25 +0000 (12:18 +0100)]
cool! countzero unit test works!
Luke Kenneth Casson Leighton [Fri, 15 May 2020 11:13:26 +0000 (12:13 +0100)]
code-munging
Luke Kenneth Casson Leighton [Fri, 15 May 2020 11:08:20 +0000 (12:08 +0100)]
bit of code-morphing of countzero.py
Luke Kenneth Casson Leighton [Fri, 15 May 2020 10:54:35 +0000 (11:54 +0100)]
make module combinatorial
Tobias Platen [Fri, 15 May 2020 09:03:37 +0000 (11:03 +0200)]
converted countzero from microwatt
Luke Kenneth Casson Leighton [Thu, 14 May 2020 21:27:30 +0000 (22:27 +0100)]
minor cleanup
Luke Kenneth Casson Leighton [Thu, 14 May 2020 21:12:37 +0000 (22:12 +0100)]
more code-munging
Luke Kenneth Casson Leighton [Thu, 14 May 2020 21:02:59 +0000 (22:02 +0100)]
random commenting and code-morph of Logical
Luke Kenneth Casson Leighton [Thu, 14 May 2020 20:54:48 +0000 (21:54 +0100)]
tidy up rotator main stage
Luke Kenneth Casson Leighton [Thu, 14 May 2020 20:47:50 +0000 (21:47 +0100)]
small code-shuffle
Luke Kenneth Casson Leighton [Thu, 14 May 2020 19:48:22 +0000 (20:48 +0100)]
update submodule for parity
Michael Nolan [Thu, 14 May 2020 19:19:58 +0000 (15:19 -0400)]
Add patch for cmpb
Luke Kenneth Casson Leighton [Thu, 14 May 2020 19:07:18 +0000 (20:07 +0100)]
update submodule isa tables to match OP_CMPB moving to Logical
Luke Kenneth Casson Leighton [Thu, 14 May 2020 19:04:46 +0000 (20:04 +0100)]
add parity test
Luke Kenneth Casson Leighton [Thu, 14 May 2020 19:03:18 +0000 (20:03 +0100)]
add the ever-weird parity instruction
Luke Kenneth Casson Leighton [Thu, 14 May 2020 18:40:03 +0000 (19:40 +0100)]
clarify code, use temporary
Luke Kenneth Casson Leighton [Thu, 14 May 2020 18:38:48 +0000 (19:38 +0100)]
simplify popcount
Luke Kenneth Casson Leighton [Thu, 14 May 2020 18:18:15 +0000 (19:18 +0100)]
add popcount test
Luke Kenneth Casson Leighton [Thu, 14 May 2020 18:13:32 +0000 (19:13 +0100)]
add (untested) popcount
Luke Kenneth Casson Leighton [Thu, 14 May 2020 17:16:28 +0000 (18:16 +0100)]
debug info on assertion
Luke Kenneth Casson Leighton [Thu, 14 May 2020 17:13:38 +0000 (18:13 +0100)]
add comment about CMP swapping
Luke Kenneth Casson Leighton [Thu, 14 May 2020 16:57:34 +0000 (17:57 +0100)]
cleanup Logical
Luke Kenneth Casson Leighton [Thu, 14 May 2020 16:39:45 +0000 (17:39 +0100)]
invert test condition in formal proof of ALU output stage
Luke Kenneth Casson Leighton [Thu, 14 May 2020 16:34:39 +0000 (17:34 +0100)]
move inversion of cmp into output stage by inverting the is +ve and is -ve test
this saves on 2x 64-bit MUXes if the actual operands A and B were swapped
instead
Luke Kenneth Casson Leighton [Thu, 14 May 2020 16:20:53 +0000 (17:20 +0100)]
idea: invert pos/neg test in output stage, uses an XOR instead of QTY 2 64-bit
MUXes and a mess/morass of code
Michael Nolan [Thu, 14 May 2020 15:40:22 +0000 (11:40 -0400)]
Implement OP_CMP
Had to reverse the a and b inputs if a cmp is detected though. Ugh
Michael Nolan [Thu, 14 May 2020 15:06:43 +0000 (11:06 -0400)]
Add OP_CMPB
Michael Nolan [Thu, 14 May 2020 15:06:32 +0000 (11:06 -0400)]
Update to latest wiki version
Michael Nolan [Thu, 14 May 2020 14:35:44 +0000 (10:35 -0400)]
Fix bug in shift_rot, update proof to handle new interface
Luke Kenneth Casson Leighton [Thu, 14 May 2020 13:04:22 +0000 (14:04 +0100)]
minor experimental rework of LDSTCompUnit to suit score6600 integration
Luke Kenneth Casson Leighton [Thu, 14 May 2020 10:04:04 +0000 (11:04 +0100)]
add TODO comments on Logical pipeline
Luke Kenneth Casson Leighton [Thu, 14 May 2020 09:51:56 +0000 (10:51 +0100)]
whoops assertion that the Logical pipeline Function Unit is... um... LOGICAL
Luke Kenneth Casson Leighton [Thu, 14 May 2020 09:45:42 +0000 (10:45 +0100)]
move forward to logical pipelines Function type
Luke Kenneth Casson Leighton [Thu, 14 May 2020 09:39:07 +0000 (10:39 +0100)]
add logical pipeline to Power decode Function enum
Michael Nolan [Wed, 13 May 2020 22:47:44 +0000 (18:47 -0400)]
Add test for random rlcd(l/r) instructions
Michael Nolan [Wed, 13 May 2020 22:44:49 +0000 (18:44 -0400)]
Fix bug in rotator preventing use of 64 bit rlcl/r
Michael Nolan [Wed, 13 May 2020 22:00:23 +0000 (18:00 -0400)]
Update to latest wiki version
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:54:51 +0000 (22:54 +0100)]
add TODO placeholders for popcount and parity
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:45:05 +0000 (22:45 +0100)]
minor tidyup
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:42:51 +0000 (22:42 +0100)]
comments on ALU pipeline
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:40:12 +0000 (22:40 +0100)]
update comment on Logical pipeline
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:37:21 +0000 (22:37 +0100)]
remove Logical operations from ALU pipeline
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:35:16 +0000 (22:35 +0100)]
split out Logical operations into separate pipeline
Luke Kenneth Casson Leighton [Wed, 13 May 2020 21:19:54 +0000 (22:19 +0100)]
comments (and whitespace
Michael Nolan [Wed, 13 May 2020 20:41:37 +0000 (16:41 -0400)]
Fix too wide bitfield being selected for opcode 30
Michael Nolan [Wed, 13 May 2020 20:22:44 +0000 (16:22 -0400)]
Fix weirdness with rldicl and friends in test_caller.py
Michael Nolan [Wed, 13 May 2020 19:54:55 +0000 (15:54 -0400)]
Add support for OP_EXTS
Luke Kenneth Casson Leighton [Wed, 13 May 2020 19:23:11 +0000 (20:23 +0100)]
restore field decoders (works with BE/LE) in rotator
Luke Kenneth Casson Leighton [Wed, 13 May 2020 18:55:41 +0000 (19:55 +0100)]
minor cleanup of shift_rot main_stage
Michael Nolan [Wed, 13 May 2020 18:52:26 +0000 (14:52 -0400)]
Add missing input stage and pipe_data
Luke Kenneth Casson Leighton [Wed, 13 May 2020 18:51:12 +0000 (19:51 +0100)]
simplift right_mask and left_mask rotator sub-functions, remove TODO comments
Michael Nolan [Wed, 13 May 2020 18:02:13 +0000 (14:02 -0400)]
Fix bug with ROTL32 helper
Turns out it's supposed to duplicate the lower 32 bits to the high 32
bits, and do a 64 bit rotate
Michael Nolan [Wed, 13 May 2020 17:51:13 +0000 (13:51 -0400)]
Somewhat working now?
Michael Nolan [Wed, 13 May 2020 17:45:06 +0000 (13:45 -0400)]
Integrate rotator.py into shift_rot unit
Michael Nolan [Wed, 13 May 2020 15:35:41 +0000 (11:35 -0400)]
Update cmp test in test_caller.py
Michael Nolan [Wed, 13 May 2020 14:26:38 +0000 (10:26 -0400)]
Add assertions to ALU and shift_rot test that the instruction FU is right
Michael Nolan [Wed, 13 May 2020 14:23:21 +0000 (10:23 -0400)]
Add SHIFT_ROT FU
Michael Nolan [Wed, 13 May 2020 14:12:36 +0000 (10:12 -0400)]
Modify alu test to put reg1 *OR* reg3 into alu input A
Michael Nolan [Wed, 13 May 2020 14:07:56 +0000 (10:07 -0400)]
Update TODO
Luke Kenneth Casson Leighton [Wed, 13 May 2020 00:02:21 +0000 (01:02 +0100)]
remove operand c from ALU in/out
Luke Kenneth Casson Leighton [Tue, 12 May 2020 20:57:18 +0000 (21:57 +0100)]
temporary reorg of reg/immediate reading
Luke Kenneth Casson Leighton [Tue, 12 May 2020 20:21:49 +0000 (21:21 +0100)]
add 3rd register input to ALUInputData
Luke Kenneth Casson Leighton [Tue, 12 May 2020 18:10:41 +0000 (19:10 +0100)]
connect LDSTMulti to 6600 Scoreboard
Luke Kenneth Casson Leighton [Tue, 12 May 2020 12:34:30 +0000 (13:34 +0100)]
when doing LD-immediate only acknowledge register 1 rd-req
Michael Nolan [Tue, 12 May 2020 17:37:42 +0000 (13:37 -0400)]
Add new shift_rot FU for shifts and rotates
Michael Nolan [Tue, 12 May 2020 17:29:02 +0000 (13:29 -0400)]
Remove rotates and shifts from alu