Bochs
8088_bios
| Bochs | 8088_bios | |
|---|---|---|
| 4 | 6 | |
| 734 | 486 | |
| 9.5% | - | |
| 9.7 | 7.2 | |
| 5 days ago | 8 days ago | |
| C++ | Assembly | |
| GNU Lesser General Public License v3.0 only | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Bochs
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Ask HN: Where can I find a primer on how computers boot?
The following is a pretty decent historical page about the pre-(U)EFI MBR (Master Boot Record) boot process:
https://thestarman.pcministry.com/asm/mbr/STDMBR.htm
Note that EFI/UEFI -- occurred much later in time than MBR...
Related: https://en.wikipedia.org/wiki/Master_boot_record
You might also wish to check out some emulators, most notably Bochs (https://bochs.sourceforge.io/) and QEMU (https://www.qemu.org/) because they simulate the boot process, and if you're in their debuggers, you should be able to inspect that process step by step -- but also more generally emulators for other machines/platforms/architectures (https://en.wikipedia.org/wiki/List_of_computer_system_emulat...) -- because in general, most of those emulators should simulate the given machine/platform/architecture's boot process...
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Can anyone recommend some good free tools for programming, debugging, and virtualization on Ubuntu?
With both of those you can make some really nice DOS programs. Which you can then run in bochs (not virtualized, but an emulator. Close enough :) ).
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80286 ROM BIOS - open-source code base?
Just took a look myself, check this out:
8088_bios
- GPL-3.0 licensed BIOS for Intel 8088 based computers
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Past meets present in this $200 mini-laptop with a Intel 8088 chip and 640KB
Just a heads up, it looks like these guys ripped off Serge Kiselev's 8088 BIOS [1].
[1] https://github.com/skiselev/8088_bios
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TinyBIOS – A minimalist open-source BIOS project for fun
There are at least three "real" 8086 BIOSes-- "real" as in they can work on actual hardware rather than just emulators-- available in source form, which might be worth examining.
https://www.phatcode.net/downloads.php?id=101 -- this is a respin of code that apparently originated in the 1980s in sketchy Taiwanese clones, so I think some of the docs are reverse engineered
http://glabios.org/ is an all-new-still-under-development project, but it works well enough for my hobby usage.
https://github.com/skiselev/8088_bios These are more targeted towards some specific hardware projects (Xi8088/Micro8088)
Obviously, being for a simple 8086 mrans they don't have some of the complex chipset config used in a modern PC, and even stuff like "hard disc support" is outsourced (for that, you might consider stuff like the XT-IDE Universal BIOS)
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80286 ROM BIOS - open-source code base?
And another: https://github.com/skiselev/8088_bios
What are some alternatives?
TinyBIOS - A mirror of TinyBIOS repository
GLaBIOS - A modern, scratch-built, open-source (GPLv3) alternative ROM BIOS for PC, XT, 8088 Clone or Turbo PCs.
tianocore
linux-insides - A little bit about a linux kernel
appendix-bios - IBM AT 80286 BIOS
All-Stages-of-Linux-Booting-
pcxtbios - Super PC/Turbo XT BIOS
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.
GW-BASIC - The original source code of Microsoft GW-BASIC from 1983
coreboot - Mirror of https://review.coreboot.org/coreboot.git. We don't handle Pull Requests.
SBEMU - legacy sound blaster emulation for DOS