Search found 39 matches

by Charles MacDonald
Fri Nov 22, 2013 5:11 pm
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

I thought I posted this a while ago but I guess I didn't: 10 Ways to Destroy an Arduino http://ruggedcircuits.com/html/ancp01.html It's about all the different ways a circuit can be destroyed (in this case an Arduino), and how protection measures can be added. In terms of making a more robust/safe p...
by Charles MacDonald
Tue Nov 19, 2013 6:08 am
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

Here's the transcript of Michael Barr testifying about his analysis of the firmware in Toyota's engine control unit: http://www.safetyresearch.net/Library/Bookout_v_Toyota_Barr_REDACTED.pdf The gist of it is that too many tasks could be running at once, causing a stack overflow that would lead to sy...
by Charles MacDonald
Fri Apr 13, 2012 2:21 am
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

This guy made a battery charger using the LM317 which is a adjustable voltage regulator. http://www.dinamousers.net/tiki-index.php?page=Battery+Charger What's cool is that he used a binary weighted ladder controlled by a DIP switch to control the adjustment, instead of using a regular potentiometer....
by Charles MacDonald
Mon Nov 07, 2011 11:38 pm
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

Here's a good article about how voltage at an I/O pin of an unpowered chip can find a path to the supply rail through ESD protection diodes: http://www.analog.com/library/analogDialogue/archives/42-10/off_amps.html I have an interesting real-world example to add to this: The Sega Saturn Action Repla...
by Charles MacDonald
Thu Oct 13, 2011 3:56 am
Forum: PC-Engine
Topic: [Translation] Nazo no Masquerade
Replies: 20
Views: 8113

Re: [Translation] Nazo no Masquerade

Awesome! Sounds like serious progress.

Will all the tools and stuff for this project be released like they were with Marchen Maze?
by Charles MacDonald
Thu Sep 22, 2011 1:15 am
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

This page links to a PDF transcript of a discussion with the Motorola 68000 design team: http://www.computerhistory.org/collections/accession/102658164 There's a lot of cool stuff in here, like all 680x0 circuitry was tested on breadboards until the 68040, at which point they finally started to simu...
by Charles MacDonald
Wed Aug 31, 2011 11:46 pm
Forum: PC-Engine
Topic: [ASM] Tips and tricks
Replies: 2
Views: 1412

Re: [ASM] Tips and tricks

Accessing quantities larger than 8 bits can be problematic on the HuC6280. Normally you have to do something like this to get a 16-bit word from a table: lda <index asl a tax lda table+0, x sta <lowByte lda table+1, x sta <highByte ; table: .dw $1234 .dw $5678 Here, 'index' is limited to 0-127 which...
by Charles MacDonald
Thu Jul 21, 2011 6:55 pm
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

Two research papers about how the encryption keys for the configuration bitstream of a Xilinx FPGA were recovered by monitoring power consumption of the device during decryption: http://eprint.iacr.org/2011/390.pdf http://eprint.iacr.org/2011/391.pdf Figure 4 in the first paper makes it pretty clear...
by Charles MacDonald
Wed Jun 15, 2011 2:43 am
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

This is the homepage of Ryuichi Takahashi, one of the designers of the NEC V60 CPU: http://homepage3.nifty.com/alpha-1/index.html He describes his time at NEC amongst other things, and has a lot of insight about microprocessor design. Almost everything is in English, though the sections are quite sm...
by Charles MacDonald
Thu Jun 09, 2011 8:31 pm
Forum: General
Topic: Stuffs to read before going to bed
Replies: 113
Views: 32634

Re: Stuffs to read before going to bed

How the copy protection in Spyro: YOTD was implemented:

http://www.gamasutra.com/view/feature/3 ... at_bay.php

I wish there were more PS/PS2 developers willing to discuss their methods, it's fascinating stuff.