Since you said you changed the boot-code size, is it large enough to change it from 0x0800 to 0x0C00? By the way, you should trace why your printf not showing first to make it work properly.
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Since you said you changed the boot-code size, is it large enough to change it from 0x0800 to 0x0C00? By the way, you should trace why your printf not showing first to make it work properly.