Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 12:25:46 +0000 (13:25 +0100)]
add SPR test case, commented out for now
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 12:18:03 +0000 (13:18 +0100)]
move valid signal out of Decode2ToExecute1Type and into PowerDecoder2
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 12:12:28 +0000 (13:12 +0100)]
add slow spr regfile regspec support
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 12:04:22 +0000 (13:04 +0100)]
remap SPR PowerISA numbers to internal SPR enum
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 11:22:28 +0000 (12:22 +0100)]
comment out SPR for now, needs SPR regfile
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 11:18:10 +0000 (12:18 +0100)]
add SPR compunit
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 11:09:08 +0000 (12:09 +0100)]
missing initialisation of disasm_start
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 10:52:20 +0000 (11:52 +0100)]
check NIA on trap fu test
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 10:52:09 +0000 (11:52 +0100)]
OP_RFID needs to read SRR0/1, OP_SC needs to write
Luke Kenneth Casson Leighton [Sun, 5 Jul 2020 10:34:16 +0000 (11:34 +0100)]
fix qemu trap test
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 23:52:35 +0000 (00:52 +0100)]
cater for illegal instruction (generates a trap)
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 21:35:19 +0000 (22:35 +0100)]
add sc back in
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 21:32:38 +0000 (22:32 +0100)]
comments in trap about exceptions using microcoding
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 20:01:34 +0000 (21:01 +0100)]
add pspec to test_core.py
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 20:01:04 +0000 (21:01 +0100)]
add pspec to test_core.py
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 19:56:29 +0000 (20:56 +0100)]
more rename spr1/spr2 to fast1/fast2
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 19:49:50 +0000 (20:49 +0100)]
whitespace
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 19:45:45 +0000 (20:45 +0100)]
more updating spr1/spr2 to fast1/fast2
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 19:44:50 +0000 (20:44 +0100)]
more updating spr1/spr2 to fast1/fast2
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 19:41:00 +0000 (20:41 +0100)]
rename spr1/spr2 to fast1/fast2 in branch
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 18:18:05 +0000 (19:18 +0100)]
update trap docstring
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 18:01:05 +0000 (19:01 +0100)]
use new consts module
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 17:44:23 +0000 (18:44 +0100)]
sorting out trap fastregs
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 17:14:03 +0000 (18:14 +0100)]
sort out trap test reg checking
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 16:59:52 +0000 (17:59 +0100)]
resolve spr names in ISACaller
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 16:52:44 +0000 (17:52 +0100)]
rename spr1 to fast1 in trap data
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 16:52:20 +0000 (17:52 +0100)]
sorting out fast/spr naming
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 14:08:52 +0000 (15:08 +0100)]
oops initialise Function Unit class with idx
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 14:07:39 +0000 (15:07 +0100)]
add first cookie-cut test_trap_compunit.py
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 14:07:19 +0000 (15:07 +0100)]
add gitignores
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 14:04:18 +0000 (15:04 +0100)]
debugging decoding of SPRs (fast)
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 13:19:38 +0000 (14:19 +0100)]
add spr test, add decode of spr in/out
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 12:22:09 +0000 (13:22 +0100)]
add spr main stage
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 11:59:19 +0000 (12:59 +0100)]
add spr input record
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 11:56:42 +0000 (12:56 +0100)]
add SPR pipeline
Luke Kenneth Casson Leighton [Sat, 4 Jul 2020 09:50:31 +0000 (10:50 +0100)]
reduce steps per stage to 8
Luke Kenneth Casson Leighton [Fri, 3 Jul 2020 03:12:34 +0000 (04:12 +0100)]
set only div/rem supported
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 23:22:00 +0000 (00:22 +0100)]
allow flexible selection of the types of ALUs
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 23:10:10 +0000 (00:10 +0100)]
fix unit tests due to change in using pspec
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 23:09:47 +0000 (00:09 +0100)]
use Mock class (more convenient)
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 21:52:52 +0000 (22:52 +0100)]
allow ALU names to propagate through from FU to CompUnit ALU
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 21:37:21 +0000 (22:37 +0100)]
name function unit ALUs
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:58:27 +0000 (20:58 +0100)]
comment out DIV unit for now
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:22:32 +0000 (20:22 +0100)]
increase combinatorial stages to 8
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:17:07 +0000 (20:17 +0100)]
reduce DIV radix to 1
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 18:28:10 +0000 (19:28 +0100)]
add DIV function unit to compunits
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 17:59:16 +0000 (18:59 +0100)]
add trap function unit into compunits
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 17:36:51 +0000 (18:36 +0100)]
add bare wishbone option to TestIssuer, sort out ports
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:13:48 +0000 (14:13 +0100)]
use single-arg pspec for TestIssuer and Core
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:13:09 +0000 (14:13 +0100)]
first experimental index.rst for sphinx documentation
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:12:14 +0000 (14:12 +0100)]
add sphinx doc preliminary start
Cesar Strauss [Thu, 2 Jul 2020 08:55:59 +0000 (05:55 -0300)]
Present the ALU result only when valid_o is active
This should help to catch latching of invalid data.
Also, better demonstrates the valid / ready protocol.
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:41:23 +0000 (20:41 +0100)]
whoops missed some cases in unit test changing ALUHelpers
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:38:00 +0000 (20:38 +0100)]
minor reorg on how Bus and Config classes are set up
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:16:32 +0000 (20:16 +0100)]
whoops swapped trap test instructions accidentally
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:47:29 +0000 (17:47 +0100)]
print out msr for debug
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:41:16 +0000 (17:41 +0100)]
attempting to add SPRs to rfid test
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:14:47 +0000 (17:14 +0100)]
add OP_SC
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 15:51:10 +0000 (16:51 +0100)]
trap test check results
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:36:00 +0000 (15:36 +0100)]
add name "test_issuer" to ilang conversion
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:34:24 +0000 (15:34 +0100)]
add in trap compunit
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:32:15 +0000 (15:32 +0100)]
add rfid and td/tw trap test
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 12:37:32 +0000 (13:37 +0100)]
continue debugging trap pipeline
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 12:06:42 +0000 (13:06 +0100)]
debugging trap pipeline
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 11:21:46 +0000 (12:21 +0100)]
start running trap unit test, fixing errors
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 14:51:09 +0000 (15:51 +0100)]
add lte ltu for use by twi and other trap functions
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 11:31:42 +0000 (12:31 +0100)]
add in pseudocode keyword into mdwn isa files
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 10:57:00 +0000 (11:57 +0100)]
code-morph on div pipeline
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 21:20:41 +0000 (22:20 +0100)]
add README for fu directory
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:08:16 +0000 (16:08 +0100)]
use correct ALUHelpers in div test
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:03:56 +0000 (16:03 +0100)]
sort out syntax errors in div
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:03:46 +0000 (16:03 +0100)]
first unit test for div
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:38:20 +0000 (15:38 +0100)]
update submodule to fix div bug
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:03:59 +0000 (15:03 +0100)]
add ignore for parsetab.py
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:02:49 +0000 (15:02 +0100)]
add autogenerated do not commit comment
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:58:43 +0000 (14:58 +0100)]
update submodule to div overflow
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:40:49 +0000 (14:40 +0100)]
separate out divide by zero cases
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:39:27 +0000 (14:39 +0100)]
update OV and OV32 ISACaller flags if overflow occurs
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:29:27 +0000 (14:29 +0100)]
attempting to add overflow setting in ISACaller
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 12:28:08 +0000 (13:28 +0100)]
whoops, hex parser digits are in multiples of 4 bits
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 10:53:25 +0000 (11:53 +0100)]
fetch instructions from bare wishbone fetch unit
Cesar Strauss [Sun, 28 Jun 2020 22:17:31 +0000 (19:17 -0300)]
Start with a simpler test case
Leave other variants (immediate, rdmaskn) for later.
Cesar Strauss [Sun, 28 Jun 2020 21:38:03 +0000 (18:38 -0300)]
Let p.ready_o be active while the test ALU is idle
The valid/ready protocol doesn't actually forbid p.ready_o
being active while p.valid_i is inactive. It just mean that
the ALU is idle, and is ready to accept new data.
This should help avoiding potential combinatorial loops from
p.ready_o to p.valid_i.
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 21:41:18 +0000 (22:41 +0100)]
add cached fetch unit pass-through args
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 21:38:37 +0000 (22:38 +0100)]
need args to WishboneArbiter, match data width size
Cesar Strauss [Sun, 28 Jun 2020 20:44:10 +0000 (17:44 -0300)]
Add missing ports to the test ALU
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 20:14:52 +0000 (21:14 +0100)]
read from instruction memory using FetchUnitInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:37:07 +0000 (20:37 +0100)]
add Config Fetch interface and quick unit test
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:21:23 +0000 (20:21 +0100)]
add test instruction memory
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:19:14 +0000 (20:19 +0100)]
add readonly option to TestMemory
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 17:23:08 +0000 (18:23 +0100)]
expand instruction bus width to 64 bit, start on a mini-cache
for instructions (one line)
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 16:20:15 +0000 (17:20 +0100)]
parameterise minerva i-cache
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 14:39:10 +0000 (15:39 +0100)]
got Pi2LSUI FSM working
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 12:17:09 +0000 (13:17 +0100)]
sram address do not cut by LSBs
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 11:03:24 +0000 (12:03 +0100)]
new Pi2LSUI working, using PortInterfaceBase
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:43:17 +0000 (11:43 +0100)]
start new version of Pi2LSUI based on PortInterfaceBase
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:24:30 +0000 (11:24 +0100)]
pass addr/mask through to PortInterfaceBase rd/wr addr
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:19:03 +0000 (11:19 +0100)]
cleanup (remove unneeded imports)
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:16:48 +0000 (11:16 +0100)]
more code-shuffle for TestMemoryPortInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:13:24 +0000 (11:13 +0100)]
more code-shuffle for TestMemoryPortInterface