Yokemate of Keyboards
Posts: 11971 from 2003/5/22
> First test chip tape-out (180nm) is claimed to be a mere 5 days away
Took a little longer: https://openpowerfoundation.org/libre-soc-180nm-power-isa-asic-submitted-to-imec-for-fabrication/
The Libre-SOC test ASIC is claimed to be "implementing a fixed-point subset of the v3.0B OpenPOWER ISA
", which is strange considering that compliancy subsets were introduced only with v3.0C of the ISA
. There are no subsets in v3.0 or v3.0B.
Fun fact: "The Cell Library used, FlexLib, […] was developed by Staf Verhaegen of Chips4Makers […].
" This happens to be MorphZone member Fats
And of course, also this significant event doesn't come without some dubious statements
from the project lead:
"Libre-SOC […] is the first wholly-independent Power ISA ASIC outside of IBM to go Silicon in 12 years.
Well, during the last 12 years, Freescale/NXP has released more than a dozen different e200-based ASIC products (not counting variants of those), the most recent one being the 16nm S32R294
released this year. Also, the entire QorIQ T family and most of the QorIQ P family are younger than 12 years. Would be interesting to know which 2009-ish non-IBM Power ISA ASIC with IBM-independent microarchitecture he's referring to here in particular, and why he doesn't accept all those later NXP/Freescale ASICs to meet his mentioned criteria.**
"they had to go through some serrioous review to get OpenPOWER out the door and into the OPF, ironically it's been ongoing for something like a decade, long before RV existed.
To contrast this with the timeline as it took place in the real world:
2010: RISC-V project started
2011: first version of RISC-V ISA released
2013: OpenPOWER Foundation founded (as OpenPOWER Consortium)
2015: RISC-V Foundation founded, Power ISA v3.0 released*,***
* Edit1: more of this nonsense
** Edit2: He tried again
and failed once more:
"our […] test ASIC […] is […] the world's first Power ISA 3.0 [ASIC] outside of IBM to reach Silicon in over 12 years.
How can there have been a Power ISA v3.0 ASIC over 12 years ago when Power ISA v3.0 was published only 6 years ago? Which ASIC is he referring to with this statement? Unless I missed something, Libre-SOC is the first Power ISA v3.0+ ASIC outside of IBM ever.
*** Edit3: even more of this nonsense
"Power ISA [...] pre-dates the RISC-V instruction set by a long way. As does interestingly their intention to open up the ISA, which was initiated about 10 years ago
"[ Edited by Andreas_Wolf 02.05.2023 - 23:50 ]