Agree that ISA's may inform a uArch, but how much value is ARM allowed to claim for an ALA licensee, the entirety of the allegedly "derivative" uArch as ARM (much more) misleadingly claims? (An extreme example might be an ARM emulator running on x86...) ARM themselves tacitly admit that the use and validation of an ISA and its implementation is not the bulk of the value in what they charge for a TLA vs an ALA:That's such a misleading generic statement, I'm speechless. He's not 100% lying, but that's so approximate he would not pass the recruiting barrage where I work if he insisted on being 100% correct.
An ISA assuming VLIW or some variants of it (e.g. TI c6x, Intel Itanium) or some memory ordering variant or the existence of SIMD instructions, etc. has dramatic impacts on how a CPU is designed. Of course the ISA alone doesn't drive all decisions on the design of a CPU, but it has enough impacts all around the place that disconnecting one from the other leads to an underperforming uarch. People thinking changing an Arm front-end with an x86 one is just plug and play are delusional; I don't mean to say you can't have a uarch doing well on both ISA, it's just that the extra work beyond decoding is massive and has roots in the supported ISA's.
Documents revealed Qualcomm ALA/TLA licensing rates:
ALA– 1.1% / $0.58
TLA – 5.3% / $2.2
![]()
Qualcomm vs. Arm trial, Day 1 – Opening statements and surprising revelations – Tantra Analyst
Qualcomm is one of the largest customers of Arm. However ever since Qualcomm announced that it is acquiring Nuvia, the two companies have been at odds regardingwww.tantraanalyst.com
Qualcomm has an ALA and can hire whoever it wants to design its ARM implementations. Even if the design transfer violates the contract with respect to some technical interpretations of wording, I hardly think they can demand the complete destruction of the uArch, the bulk of which contains no new work by ARM. I think that they are within their rights to demand that the work done by them under the prior ALA should be destroyed and redone in order to collect those fees, but the Phoenix uArch coupled w/ Qualcomm's own implementation of the decoders should definitely be considered a different ALA implementation as far as the reach of the value contributed by ARM is concerned.
IMO this should have been settled long ago with 3rd party arbitration, however ARM is asking for the nuclear option to boost short term valuation to float more shares (iirc only 10% are floated today) at inflated prices. This move is in the longer run very much cutting off its own nose to spite its face.
Last edited: