01:04 <OmniMancer> I believe it is not quite like REP in x86 since x86 will trap if it is used in a non supported place, it just has a bunch of unrelated places it can occur

01:09 <sorear> I just read a 8086 manual and a recent-ish intel SDM (2016) because I was curious and neither of them commits to it trapping :/

01:19 <omnitechnomancer> Probably so they can add semantics, but neither of them will say it does nothing either right?

01:22 <whitequark> :/

01:23 <omnitechnomancer> I don't really care what the processor does with them just if I need to explain the prefixed forms of every instruction to the disassembler

01:25 <cr1901_modern> I wouldn't be surprised one bit if in 8086-world the semantics for using "REP" in an unsupported position is "don't do that". Kinda like "pop cs"

01:28 <omnitechnomancer> Indeed, I suppose boneless is also not aiming for binary compatibility forever across a whole processor family?

01:40 <sorear> Repeat prefixes (F2H, F3H) cause an instruction to be repeated for each element of a string. Use these prefixes only with string and I/O instructions (MOVS, CMPS, SCAS, LODS, STOS, INS, and OUTS). Use of repeat prefixes and/or undefined opcodes with other Intel 64 or IA-32 instructions is reserved; such use may cause unpredictable behavior.

01:40 <sorear> Some instructions may use F2H,F3H as a mandatory prefix to express distinct functionality

01:41 <sorear> there's also no clear mention of what happens if you use REPNE for other than SCAS/CMPS

01:41 <sorear> I suspect that for Intel historically a precise specification of the instruction set is a liability

01:42 <cr1901_modern> You wouldn't be able to distinguish 8086 up to 486 if it weren't for some small semantic changes :D!

01:48 <omnitechnomancer> Well the performance would differ if nothing else

05:05 <awygle> is there a pic-style minimum-area soft core that people use?

05:05 <awygle> thinking an accumulator-type architecture

05:07 <awygle> also a) why is there a toaru majutsu no index-style version of the boneless logo b) does it say "a certain boneless CPU" c) why does it have a III when afaict boneless is currently rev II?

05:11 <pie_> awygle: 4) you gotta link it man we gotta seee

05:11 <awygle> https://raw.githubusercontent.com/whitequark/Boneless-CPU/master/doc/images/logo_toaru-blur.svg

05:12 <pie_> oh, not what i expected

05:12 <awygle> what _did_ you expect?

05:28 <pie_> anime girls, somehow

05:28 <pie_> you _did_ say logo

05:29 <awygle> ah lol

05:29 <awygle> i guess somebody could easily have drawn a boneless-chan

05:29 <awygle> .... actually that might go in a horrifying direction.

05:30 <pie_> 'xD

05:31 <pie_> watxd

05:32 <pie_> people living https://nitter.net/pic/https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FEYyFr3rXYAAFlr8.jpg%3Fname%3Dorig

05:32 <pie_> im jelly

07:32 <cr1901_modern> >boneless-chan

07:32 <cr1901_modern> I believe it is time for you to stop posting.

07:50 <azonenberg> awygle: boneless-chan, lol

07:50 <azonenberg> you HAVE seen the far side cartoon of the boneless chicken ranch, right?

10:55 <gruetzkopf> remember "rep ret"

20:43 <emeb> I realize this is slightly OT but can anyone confirm that Xilinx Vivado 2019 and later no longer allow a free unlimited duration install for low-end products via WebPack or equivalent?

20:44 <emeb> I just went to the trouble of installing 2019.2 and when it took me to the Xilinx site to get a license it seems that the only things available were 30-day trials.

20:45 <tnt> AFAIK the webpack is still a thing ...

20:45 <emeb> It seems to work for older versions

20:46 <emeb> I can still run 2017.x Vivado with a free license that doesn't time out.

20:46 <emeb> But if the newer stuff allows that they've hidden the options to do so pretty well.

20:47 <tnt> https://www.xilinx.com/content/xilinx/en/products/design-tools/vivado/vivado-webpack.html

20:48 <tnt> Might be that you need to really DL the webpack edition and select it during install rather than rely on a license file ?

20:49 <tnt> "Starting in Vivado 2016.x onward, a license is no longer required for a WebPACK."

20:49 <tnt> so ... it should just work in webpack mode if you don't have a license installed.

20:50 <tnt> (and assuming you installed the WebTalk component that uploads your design stats to Xilinx which is a Webpack requirement)

20:51 <emeb> OK - that's why the license generation site no longer provides webpack option for later tools.

20:51 <emeb> Thanks