diff options
| author | Richard Qin <richard.qin.x@gmail.com> | 2026-11-08 05:56:48 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-11-08 05:56:48 +0800 |
| commit | 85ce9edd4ab33c9694ee5d4486a2a50a6442240b (patch) | |
| tree | ea11457cd09a45b58948d8e1ff1270d768a1e9f2 /mubios/arch/mode_switch.S | |
| parent | 33e4bf49511154ac126e36f0490a574d0e01275f (diff) | |
| download | rcc-project-85ce9edd4ab33c9694ee5d4486a2a50a6442240b.tar.gz rcc-project-85ce9edd4ab33c9694ee5d4486a2a50a6442240b.tar.xz | |
[mubios] Enable IRQ0
Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
Diffstat (limited to 'mubios/arch/mode_switch.S')
| -rw-r--r-- | mubios/arch/mode_switch.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mubios/arch/mode_switch.S b/mubios/arch/mode_switch.S index 575c78d..9b2643a 100644 --- a/mubios/arch/mode_switch.S +++ b/mubios/arch/mode_switch.S @@ -109,7 +109,7 @@ protected_mode_entry: mov fs, ax mov gs, ax - mov esp, 0x00008000 + mov esp, 0x00007000 call post_main @@ -165,7 +165,7 @@ protected16_return: # Leave protected mode while already using a 16-bit code segment. mov eax, cr0 - and eax 0xFFFFFFFE + and eax, 0xFFFFFFFE mov cr0, eax # Jump to the prepared real-mode CS:IP pointer. @@ -179,6 +179,8 @@ real_mode_return: mov ds, ax mov es, ax mov ss, ax + mov fs, ax + mov gs, ax mov sp, 0x7FFE ret |