Wednesday, September 16
Daily News Stuff 15 September 2020
Gone Rogue Edition
Gone Rogue Edition
Tech News
- Nvidia, having acquired Arm, may produce Arm CPUs. (Tom's Hardware)
Seems logical.
CEO Jensen Huang also said he plans to speed up development of higher-performance Arm cores.
- It's BMO. (Tom's Hardware)
Only yellow. And for some reason, with two built-in keypads on the sides of his head.
- So you've decided to write a recursive descent parser. Here's why you shouldn't. (Laurence Tratt)
And here's how to make it work anyway. (Archive.Org)
- This is rather nice. (Itch.IO)
It's a work-in-progress animated tileset for a farming/village simulator, like that wildly popular game, or that other wildly popular game.
That image is 640x384, so Dream resolution rather than Imagine resolution. The Imagine would show three quarters of that width and height.
- IBM is working on an 1121 qubit quantum computer. (ZDNet)
In theory, each additional qubit doubles the power of a quantum computer. IBM only announced a 65 qubit quantum computer this month. So 1121 is a lot.
- Sony has reportedly scaled back launch quantities of the PS5 by 25% due to chip production issues. (Thurrott.com)
Which is slightly odd, because the PS5 custom chip is designed by AMD and produced on TSMC's established 7nm process, just like the Xbox Series S and X custom chips, and AMD's own APUs, CPUs, and GPUs. Why just Sony?
- A couple more Raspberry Pi competitors. (ZDNet)
Interesting note: The Odroid C4's chip with a quad 2GHz A55 roughly matches the RasPi's quad 1.5GHz A72. I've never used an A55 device, but this suggests it is usefully faster than the ubiquitous A53. Between the A72 and the A53 it was really no contest.
- I did not change the architecture of any imaginary computers today. Not because I was being good, more because I wasn't feeling well and went to bed early.
Disclaimer: And stay out.
Posted by: Pixy Misa at
03:41 AM
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1
If I wanted to write a parser I would use YACC, Bison, or something like that, unless I was just writing a toy to prove I understood the process and concepts.
Posted by: Rick C at Wednesday, September 16 2020 06:54 AM (eqaFC)
2
I see, having read most of the article now, he gets there eventually. 
Posted by: Rick C at Wednesday, September 16 2020 07:01 AM (eqaFC)
Posted by: Rick C at Wednesday, September 16 2020 07:06 AM (eqaFC)
4
The Snapdragon 845 and 855 use A55s as the little cores. WP sez "ARM has stated the A55 should have 15% improved power efficiency and 18% increased performance relative to the A53." (and there are some other improvements.)
Posted by: Rick C at Wednesday, September 16 2020 07:09 AM (eqaFC)
5
On the parser, I need the whole compiler to be (a) standalone, (b) self-hosted, (c) running in 128k of memory, and (d) running on an architecture that doesn't exist. I can use tools to get me started but I'll need to end up with something hand-crafted anyway.
Posted by: Pixy Misa at Wednesday, September 16 2020 08:45 AM (PiXy!)
6
When you're done I want to ask you some questions about real microprocessor/microcontroller design... I want to find some data but I don't know where to look.
Posted by: Phil Fraering at Wednesday, September 16 2020 11:06 AM (Clxcy)
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