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86Duino One Boot sequence
2014 年 05 月 23 日
Forum Posts: 12
Member Since:
2014 年 04 月 20 日

Hi I'm a bit new to coding C and am having a hard time following the source code to determine the exact boot sequence of the 'One'.
I do realize that the _core86.rom is the BIOS and _V86boot.exe is the boot loader. I also know that _86duino.bin is the system file and _86duino.exe is the compiled .INO file. What I would like to know is what exactly loads first, what does it initialize and what does it hand off to. I would like to be able to alter the boot process to boot to a FreeDOS prompt and load scripts for the board from there. All the bootable images make a small image and I would like to make a larger, i.e. 8G image much like a small hard drive. FreeDos supports a larger image but all the supplied images are FAT12 not FAT32 as needed for a lager disk. Please help with this if anyone has any info. Thanks in advance

2014 年 05 月 25 日
Forum Posts: 135
Member Since:
2013 年 10 月 05 日

When entering FreeDOS, 86Duino first runs the bootloader v86boot.exe, and then v86boot executes 86duino.exe to run the user's sketch.

You can use the 86Duino SysImage tool to build a bootable SD card, which is already a FreeDOS disk; then opening the autoexec.bat in the SD card, you will be able to see and change the boot sequence of 86Duino:)

2014 年 05 月 27 日
Forum Posts: 12
Member Since:
2014 年 04 月 20 日

Thank-you form the info. I'll try it out and see how things go. Thanks again

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