diff options
| author | Damien Zammit <damien@zamaudio.com> | 2021-03-28 23:26:07 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-03-28 23:26:07 +0200 |
| commit | 89dbc9815f6372e33402ad52e5c1c905c6bfd3b0 (patch) | |
| tree | f00ea6bbf65b75ab527822205f3dcbc85a5f650b | |
| parent | 32cda7d7e9374b805ccd5b00ef9e1a28a3f68532 (diff) | |
pic: Move to interrupts 0x20-0x2f
* i386/i386/pic.h (PICM_VECTBASE): Set to 0x20.
* i386/i386at/idt.h (IDTSZ): Set to 0x20 + 0x10.
(PIC_INT_BASE): Set to 0x20.
| -rw-r--r-- | i386/i386/pic.h | 2 | ||||
| -rw-r--r-- | i386/i386at/idt.h | 6 |
2 files changed, 3 insertions, 5 deletions
diff --git a/i386/i386/pic.h b/i386/i386/pic.h index 6434bf08..b3365ed9 100644 --- a/i386/i386/pic.h +++ b/i386/i386/pic.h @@ -96,7 +96,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #if defined(AT386) || defined(ATX86_64) -#define PICM_VECTBASE 0x40 +#define PICM_VECTBASE 0x20 #define PICS_VECTBASE PICM_VECTBASE + 0x08 #endif /* defined(AT386) */ diff --git a/i386/i386at/idt.h b/i386/i386at/idt.h index 56e6296c..fd2f62d8 100644 --- a/i386/i386at/idt.h +++ b/i386/i386at/idt.h @@ -26,11 +26,9 @@ /* On a standard PC, we only need 16 interrupt vectors, because that's all the PIC hardware supports. */ -/* XX But for some reason we program the PIC - to use vectors 0x40-0x4f rather than 0x20-0x2f. Fix. */ -#define IDTSZ (0x20+0x20+0x10) +#define IDTSZ (0x20+0x10) -#define PIC_INT_BASE 0x40 +#define PIC_INT_BASE 0x20 #include <i386/idt-gen.h> |