petrohi

6 ms·

1.
DBOS(en.wikipedia.org)
17 points by petrohi 3y ago|0 comments
2.
by petrohi 3y ago
I remember using Soviet-made VAX clone from СМ ЭВМ series: https://en.m.wikipedia.org/wiki/SM_EVM
3.
by petrohi 3y ago
I want to mention another awesome project, which implements PDP-11 on FPGA and can be used with PiDP-11 panel. (PiDP-11 by default uses software emulator running on Raspberry Pi.) https://pdp2011.sytse.net/wordpress/
4.
by petrohi 3y ago
Not the parent poster, but my experience may be relevant. My background is exclusively in software engineering and computer science. I started by reading “Digital Design and Computer Architecture”. There’s new RISC-V edition https:/&#
5.
by petrohi 3y ago
I started by reading “Digital Design and Computer Architecture”. There’s new RISC-V edition https://a.co/d/imzGBK5 . The book starts from Boolean logic and transistor technology and goes all the way to assembly programm
6.
Modular launches unified inference framework and new programming language for AI(modular.com)
6 points by petrohi 3y ago|0 comments
7.
Thousands of conductance levels in memristors integrated on CMOS(nature.com)
3 points by petrohi 3y ago|0 comments
8.
by petrohi 4y ago
It has TTL RGBI and composite NTSC outputs. The latter is actually very interesting in that it can produce 16-color images using color smearing effect on NTSC TV. Many games from the period used this to achieve more colorful graphics at the
9.
by petrohi 4y ago
Yes, specifically IBM PCjr-ish clone. Compared to IBM PC 5150 it has 2x slower access to the first 96K of RAM due to “integrated” nature of its non-standard take on CGA. But, the rest of RAM is actually faster than IBM PC because it is a mo
10.
by petrohi 4y ago
Tried it on 4.7MHz 8088. Looks great but too slow to enjoy the gameplay.
11.
Getting Tensil to run ResNet at 300 FPS on ZCU104(k155la3.blog)
1 points by petrohi 4y ago|0 comments
12.
Getting ResNet to 300 FPS on ZCU104(k155la3.blog)
1 points by petrohi 4y ago|0 comments
13.
by petrohi 4y ago
This two-part blog explains step by step how to build a robot starting from training the ML model, using FPGA for hardware acceleration, writing an embedded C program and finally assembling everything on the chassis.
14.
Show HN: Speech Controlled Robot on FPGA(k155la3.blog)
3 points by petrohi 4y ago|1 comments
15.
by petrohi 4y ago
We work on an open source tensor processing unit at https://tensil.ai . It is not RISC-V based since only a handful of very simple instructions is needed for expressing data flows typical in ML.
16.
Show HN: YOLO v4 Tiny with Tensil on Ultra96 FPGA Board(k155la3.blog)
8 points by petrohi 4y ago|0 comments
17.
by petrohi 5y ago
Something like the Alveo PCIe card has onboard HBM/DDR4 memory large enough for Tensil DRAM pools, so this would be similar to how GPU operates but could also reach to host memory via PICe if needed. Embedded applications with Zynq 7 a
18.
by petrohi 5y ago
Great questions! With Tensil, all computations are performed on the FPGA. In addition to matrix multiplication Tensil supports SIMD instruction with various operations. The ML activations, average and maximum pooling, normalization, and ima
19.
by petrohi 5y ago
It’s possible to form monochrome VGA signal with an SPI, which is commonly available in microcontrollers. I did little write-up on how to do it efficiently (DMA etc) on PIC32: https://hackaday.io/project/173682-color-as
20.
by petrohi 5y ago
Very glad to see Rust on PIC32! This microcontroller is one of the very few that is still made in DIP package making it ideal for breadboardind and easy through-hole soldering, and by far most powerful, making it ideal choice for interestin
21.
Seymour Cray: What's All This About Gallium Arsenide? (1988)(youtube.com)
2 points by petrohi 5y ago|0 comments
22.
by petrohi 5y ago
Hello HN. SIDfi is a single-board self-contained SID file player. SIDfi requires the original MOS 6581 chip or a pin-compatible replacement such as ARMSID. SIDfi plays tune files such as High Voltage SID Collection from a FAT-formatted memo
23.
Show HN: Single-board SID file player(github.com)
2 points by petrohi 5y ago|1 comments
24.
Conway's Game of Life on FPGA(k155la3.blog)
128 points by petrohi 5y ago|30 comments
25.
Forth SoC Written in VHDL(github.com)
54 points by petrohi 6y ago|12 comments
26.
by petrohi 6y ago
Have you tried MikroTik gear?
27.
VT100 on PIC32 Microcontroller(github.com)
3 points by petrohi 6y ago|0 comments
28.
by petrohi 6y ago
This is great! Would be also interesting to have side-by-side history of US, Russian and French nuclear power programs.
29.
Reclaming precious RAM from the frame buffer porch(hackaday.io)
2 points by petrohi 6y ago|0 comments
30.
Show HN: Learning embedded Rust by building RISC-V-powered robot(k155la3.blog)
1 points by petrohi 6y ago|0 comments

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