diff options
Diffstat (limited to 'boot/include/bios.h')
| -rw-r--r-- | boot/include/bios.h | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/boot/include/bios.h b/boot/include/bios.h index a19e570..cf9f8ec 100644 --- a/boot/include/bios.h +++ b/boot/include/bios.h @@ -13,61 +13,61 @@ ** BIOS-related memory addresses */ -#define BIOS_BDA 0x0400 +#define BIOS_BDA 0x0400 /* ** Selected BIOS interrupt numbers */ -#define BIOS_TIMER 0x08 -#define BIOS_KBD 0x09 -#define BIOS_VIDEO 0x10 -#define BIOS_EQUIP 0x11 -#define BIOS_MSIZ 0x12 -#define BIOS_DISK 0x13 -#define BIOS_SERIAL 0x14 -#define BIOS_MISC 0x15 -#define BIOS_KBDSVC 0x16 -#define BIOS_PRTSVC 0x17 -#define BIOS_BOOT 0x19 -#define BIOS_RTCPCI 0x1a +#define BIOS_TIMER 0x08 +#define BIOS_KBD 0x09 +#define BIOS_VIDEO 0x10 +#define BIOS_EQUIP 0x11 +#define BIOS_MSIZ 0x12 +#define BIOS_DISK 0x13 +#define BIOS_SERIAL 0x14 +#define BIOS_MISC 0x15 +#define BIOS_KBDSVC 0x16 +#define BIOS_PRTSVC 0x17 +#define BIOS_BOOT 0x19 +#define BIOS_RTCPCI 0x1a // BIOS video commands (AH) -#define BV_W_ADV 0x0e +#define BV_W_ADV 0x0e // BIOS disk commands (AH) -#define BD_RESET 0x00 -#define BD_CHECK 0x01 -#define BD_RDSECT 0x02 -#define BD_WRSECT 0x03 -#define BD_PARAMS 0x08 +#define BD_RESET 0x00 +#define BD_CHECK 0x01 +#define BD_RDSECT 0x02 +#define BD_WRSECT 0x03 +#define BD_PARAMS 0x08 // BIOS disk commands with parameters (AX) -#define BD_READ(n) ((BD_RDSECT << 8) | (n)) -#define BD_READ1 0x0201 +#define BD_READ(n) ((BD_RDSECT << 8) | (n)) +#define BD_READ1 0x0201 // CMOS ports (used for masking NMIs) -#define CMOS_ADDR 0x70 -#define CMOS_DATA 0x71 +#define CMOS_ADDR 0x70 +#define CMOS_DATA 0x71 // important related commands -#define NMI_ENABLE 0x00 -#define NMI_DISABLE 0x80 +#define NMI_ENABLE 0x00 +#define NMI_DISABLE 0x80 /* ** Physical Memory Map Table (0000:2D00 - 0000:7c00) ** ** Primarily used with the BIOS_MISC interrupt */ -#define MMAP_SEG 0x02D0 -#define MMAP_DISP 0x0000 -#define MMAP_ADDR ((MMAP_SEG << 4) + MMAP_DISP) -#define MMAP_SECTORS 0x0a +#define MMAP_SEG 0x02D0 +#define MMAP_DISP 0x0000 +#define MMAP_ADDR ((MMAP_SEG << 4) + MMAP_DISP) +#define MMAP_SECTORS 0x0a -#define MMAP_ENT 24 /* bytes per entry */ -#define MMAP_MAX_ENTS (BOOT_ADDR - MMAP_ADDR - 4) / 24 +#define MMAP_ENT 24 /* bytes per entry */ +#define MMAP_MAX_ENTS (BOOT_ADDR - MMAP_ADDR - 4) / 24 -#define MMAP_CODE 0xE820 /* int 0x15 code */ -#define MMAP_MAGIC_NUM 0x534D4150 /* for 0xE820 interrupt */ +#define MMAP_CODE 0xE820 /* int 0x15 code */ +#define MMAP_MAGIC_NUM 0x534D4150 /* for 0xE820 interrupt */ #endif |