<tnt>
TD-Linux: but you need them if you want to use that alu to check jump conditions.
<tnt>
they're not 'exposed' in the ISA. but internally they're still needed.
<TD-Linux>
tnt, what about the V flag though?
<TD-Linux>
afaik conditional jumps on risc-v only need z and sign?
<tnt>
don't you need V for the signed/unsigned compares ?
<tnt>
I'm a bit fuxxy on that tbh, I only ever look it up when I need it.
<TD-Linux>
oh maybe actually. I've never written a risc-v core myself if you can't tell.
<TD-Linux>
I was just playing with the idea of abusing alureg to implement 68k
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<pepijndevos>
Is any of you active on Mastodon? Trying to find some interesting people.
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<eddyb>
TD-Linux: heh I would try this with MIPS first
<TD-Linux>
yeah except no one wants mips
<eddyb>
... touche
<eddyb>
(well there is some retro emulation that might be relevant, from before everyone moved to PPC)
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<ZirconiumX>
Honestly I almost had respect for Wave until they abruptly terminated MIPS Open
<ZirconiumX>
Now it feels like they were trying to play a patent trap
<GenTooMan>
huh well MIPS is now obsolete the only way to make it considered was to give it away'
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<ZirconiumX>
"obsolete" is a tricky term here. I'd say something like Alpha is definitely "obsolete" (and public domain, to the best of my knowledge), but MIPS does see some amount of use
<daveshah>
Plenty of more-or-less-MIPS-ISA-compatible cores in all kind of odd cheap networking chips etc
<sorear>
alpha had a fun long tail of use as the Illinois Verilog Model
<fseidel>
some of the Chinese MIPS cores don't have the unaligned load ops (LHL, LHR) because those were patented, so they're not technically full-on MIPS compatible
<fseidel>
but very close
<fseidel>
*LWL, LWR
<daveshah>
hah
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<GenTooMan>
that is the issue with MIPS it has become obscura
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<eddyb>
can't wait to see RISC-V chips in commodity wireless routers :P
<eddyb>
(although I think around 802.11ac or even earlier, MIPS started to get replaced with ARM?)
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<ZirconiumX>
Bring back SuperH, arguably the least-RISC RISC :P
<cr1901_modern>
ZirconiumX: /join #j-core
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