I checked the blog but came out without anything new. I would like to write bootloader for micro-controllers like PIC and Atmel where should I start?
Writing a Tiny x86 Bootloader
51–55 of 55 posts
Re: Writing a Tiny x86 Bootloader
#52I checked the blog but came out without anything new. I would like to write bootloader for micro-controllers like PIC and Atmel where should I start?
Existing implementations and/or the datasheet of the controller.
Re: Writing a Tiny x86 Bootloader
#53Earlier quoted context omitted.
He uses bios calls , thats what you need to learn to be able to write a bootloader, the rest is just reading up some documentation about what you are going to load. You can't fit a filesystem parser into 1 sector and have anything other sensible in there... from bootloader you load sectors from disk, using bios generally (on x86 atleast). and you can understand how to do it from this tutorial.
> the rest is just reading up some documentation about what you are going to load That documentation is usually.... lacking > You can't fit a filesystem parser into 1 sector and have anything other sensible in there You don't use a single sector. You use a 2 stage bootloader that uses a reserved FAT sector. In FAT12 (at least) you can specifiy how many reserved secotrs on formatting. A reserved sector comes directly…
There isn't a lot there to document. At this point it counts as a part of our civilization. It's even on Wikipedia:
* https://en.wikipedia.org/wiki/Master_boot_record
* https://en.wikipedia.org/wiki/BIOS_interrupt_call
There isn't much call for FAT12 these days...
Re: Writing a Tiny x86 Bootloader
#54I checked the blog but came out without anything new. I would like to write bootloader for micro-controllers like PIC and Atmel where should I start?
Existing implementations and/or the datasheet of the controller.
Both would be great. I like picking new idea or concept from fundamental level. Please send me links or emails.
Re: Writing a Tiny x86 Bootloader
#55Earlier quoted context omitted.
The "findings" you are describing are characteristic of security-conscious users suffering from paranoid schizophrenia. This is not an isolated incident. The "badBIOS" incident reported by Dragos Ruiu a few years ago ([1]) had many of the same characteristics as what you are reporting: • Vague symptoms, affecting all computers (and, often, even non-computer devices) owned by the individual • Inability to isolate the…
If you're going to respond empathetically to someone who you think needs help, it's important to distinguish that from a personal attack. This comment doesn't do that—indeed it almost seems like you're invoking "psychiatric help" as ammunition in an argument, which would be bannable offence here.
please take your life somewhere else.