nynyny7

7 ms·

1.
Dhrystone Benchmark. History, Analysis, "Scores" and Recommendations (2002)[pdf](eembc.org)
1 points by nynyny7 10mo ago|0 comments
2.
How to reverse engineer an analog chip: the TDA7000 FM radio receiver(righto.com)
62 points by nynyny7 1y ago|15 comments
3.
AWR6843AOP – Single-chip 60GHz radar sensor with antenna on package, DSP and MCU(ti.com)
3 points by nynyny7 1y ago|0 comments
4.
Non-intrusive instruction tracing for Raspberry Pi RP2350(github.com)
1 points by nynyny7 2y ago|0 comments
5.
Proprietary silicon ICs and dubious marketing claims? Let's fight those [video](media.ccc.de)
4 points by nynyny7 2y ago|0 comments
6.
EstyJS 2.0 (emulator for the Atari ST, written in 100% pure JavaScript)(kaiec.github.io)
69 points by nynyny7 2y ago|23 comments
7.
by nynyny7 2y ago
Crowdstrike marketing slogan on their website: "A radical new approach proven to stop breaches". I'll give them that: Putting all Windows computers within a company into an endless BSOD loop is a very radical approach to stop
8.
by nynyny7 2y ago
As a sidenote, there is even an open-source recreation of the TOS operating system for the Atari 16/32 bit computers called EmuTOS that is in active development to this day. It just had a new release a few days ago: https://
9.
SidecarT – Atari ST/STE/Mega Cartridge Emulator on Raspberry Pi Pico Steroids(sidecartridge.com)
37 points by nynyny7 3y ago|6 comments
10.
by nynyny7 3y ago
I don't get the purpose, at least of his minimal example. The author says he wants to make his code position-independent, i.e., so that it can be executed from everywhere in memory (without relocation). But that is defeated by the... m
11.
by nynyny7 4y ago
As other commenters have pointed out, this is a C64 controlling an MP3 player. People old enough to remember the late 1990s / early 2000s might recall that back then it was popular, too, to hook up an external MP3 decoder, e.g., to t
12.
by nynyny7 4y ago
10BASE-T1S is more of alternative/replacement/upgrade to CAN and CAN FD, which use a single wire pair as bus, too. And automotive 100 MBit/s and 1 GBit/s Ethernet are also single-pair. (But they are point-to-point and
13.
by nynyny7 4y ago
Exactly. A few dollars is an enormous price saving the automotive industry.
14.
by nynyny7 4y ago
You'd be surprised how much the reduced cable cost matters to an OEM.
15.
by nynyny7 4y ago
Not really. There is no ring, neither physically, nor logically. It's based on CSMA/CD, like the "good old" coaxial cable Ethernet. (Optionally it can use additional methods to avoid collisions, though.)
16.
by nynyny7 4y ago
There isn't the connector for 10BASE-T1S or other Automotive Ethernet standards such as 100BASE-T1. OEMs (= car manufacturers) will often define their custom connector. E.g., the Ethernet signal might just occupy two pins on an much
17.
ET4000 ISA graphics card: Undocumented register / Newer data sheet available?(vogons.org)
2 points by nynyny7 4y ago|0 comments
18.
by nynyny7 4y ago
... and nowadays, retro-hobbyists can add USB(!) ports to the 1040ST: https://wiki.newtosworld.de/images/f/fd/Lightning_ST_IDE_USB...
19.
by nynyny7 4y ago
As for "there seem to be quite a few different Atari 1040ST board designs" noted in the article. There is actually a huge number of different board layouts. Look at the entries for "STF" or "STFM" in this overv
20.
PicoWifi ‒ An inexpensive and easy-to-use WiFi dongle for Ataris with USB(github.com)
3 points by nynyny7 4y ago|0 comments
21.
BigPEmu – Atari Jaguar Emulator(richwhitehouse.com)
1 points by nynyny7 4y ago|0 comments
22.
by nynyny7 4y ago
When I had my "I want to build my own SDR" phase ;) ca. 15 years ago, I also used analog switches as a switching mixer - with a PLL running at 4x the desired frequency so I could utilize dividers to get nice 0°, 90°, 180°, 270° LO
23.
An Intro to x86_64 Reverse Engineering(nora.codes)
16 points by nynyny7 4y ago|0 comments
24.
by nynyny7 4y ago
The quoted description is correct. The boot ROM loads code from flash: the "second stage" loader. That loader then (usually) configures the RP2040 to execute the actual application directly from flash. But the "Easter egg&quo
25.
by nynyny7 4y ago
What are you trying to say here? Please have a look into the RP2040 data sheet to understand what "boot ROM" means. It is not programmable! https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.p... &q
26.
by nynyny7 4y ago
And here is code to run it on the actual hardware (i.e., Pi Pico or similar boards): https://gist.github.com/czietz/c37eab1e4623ad5f619e7acf84ee3... Also returns 42.
27.
by nynyny7 4y ago
It is in the boot ROM ; not in flash memory.
28.
by nynyny7 4y ago
As it is in ROM (inside the RP2040), removing it might involve a Focused Ion Beam machine ;-)...
29.
by nynyny7 4y ago
Okay. I have an idea. Let’s see what happens if we treat… 06: 00 B5 push {lr} … as the start of this weird code(?) sequence. It pushes the link register (i.e., the return address to the caller). 08: 42 40
30.
by nynyny7 4y ago
The 'zphd' label seems to appear nowhere else in the boot ROM code, though: https://github.com/raspberrypi/pico-bootrom/search?q=zphd

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