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* [mubios] Add C implementation of INT 10hRichard Qin46 hours2-0/+93
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add services INT 13hRichard Qin46 hours1-0/+104
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Establish the BIOS interrupt register contextRichard Qin46 hours1-0/+41
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement INT 13h AH=42hRichard Qin46 hours1-1/+148
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement INT 13h AH=41hRichard Qin46 hours2-0/+38
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement a minimal INT 10h AH=0EhRichard Qin46 hours2-0/+94
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Transfer control from the BIOS to the MBR, which has been loaded at ↵Richard Qin46 hours1-0/+18
| | | | | | 0x7C00. Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add ATARichard Qin46 hours4-1/+115
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] fixed memory addressRichard Qin47 hours1-1/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Have IRQ0 maintain the BIOS clock, and implement INT 1Ah AH=00h.Richard Qin47 hours3-0/+82
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Enable IRQ0Richard Qin47 hours7-19/+112
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Transition from protected mode back to real modeRichard Qin48 hours1-0/+74
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Create 16-bit entry points for IRQ0/IRQ1 and install the IVT vectors.Richard Qin2 days5-1/+92
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Fix the link order for the 16-bit entriesRichard Qin2 days3-3/+11
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement the PIC and PIT.Richard Qin2 days4-1/+117
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement the COM1 serial port driver and POST output.Richard Qin2 days4-0/+151
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add Clangd SupportRichard Qin2 days2-1/+5
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Initialize IVT, BDA and EBDA.Richard Qin2 days4-2/+116
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add Clang Format based on GNU styleRichard Qin2 days2-1/+5
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add CFLAGS to close Exception Unwinding and Stack Unwinding MechanismRichard Qin2 days1-1/+2
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Building a 32-bit C entry in protected modeRichard Qin2 days4-0/+58
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement the switch from 16-bit to 32-bit protected modeRichard Qin2 days2-0/+112
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Write mubios reset entry pointRichard Qin2 days2-1/+63
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] setup Makefile and linker scriptRichard Qin2 days3-0/+153
Signed-off-by: Richard Qin <richard.qin.x@gmail.com>