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stand/i386/boot0/boot0.S
| Show First 20 Lines • Show All 210 Lines • ▼ Show 20 Lines | |||||
| #if defined(SIO) && COMSPEED != 0 | #if defined(SIO) && COMSPEED != 0 | ||||
| /* | /* | ||||
| * Init the serial port. bioscom preserves the driver number in DX. | * Init the serial port. bioscom preserves the driver number in DX. | ||||
| */ | */ | ||||
| movw $COMSPEED,%ax # defined by Makefile | movw $COMSPEED,%ax # defined by Makefile | ||||
| callw bioscom | callw bioscom | ||||
| #endif | #endif | ||||
| #if defined(SIO) && defined(RESET_TERM) | |||||
| /* | /* | ||||
| * ANSI / VT100 command to reset all terminal attributes | |||||
| */ | |||||
| movw $resetterm,%si # Reset | |||||
| callw putstr # terminal | |||||
| #endif | |||||
| /* | |||||
| * If the 'setdrv' flag is set in the boot sector, use the drive | * If the 'setdrv' flag is set in the boot sector, use the drive | ||||
| * number from the boot sector at 'setdrv_num'. | * number from the boot sector at 'setdrv_num'. | ||||
| * Optionally, do the same if the BIOS gives us an invalid number | * Optionally, do the same if the BIOS gives us an invalid number | ||||
| * (note though that the override prevents booting from a floppy | * (note though that the override prevents booting from a floppy | ||||
| * or a ZIP/flash drive in floppy emulation). | * or a ZIP/flash drive in floppy emulation). | ||||
| * The test costs 4 bytes of code so it is disabled by default. | * The test costs 4 bytes of code so it is disabled by default. | ||||
| */ | */ | ||||
| testb $SETDRV,_FLAGS(%bp) # Set drive number? | testb $SETDRV,_FLAGS(%bp) # Set drive number? | ||||
| ▲ Show 20 Lines • Show All 350 Lines • ▼ Show 20 Lines | #endif | ||||
| push $0x10 # Packet size | push $0x10 # Packet size | ||||
| movw %sp,%si # Packet pointer | movw %sp,%si # Packet pointer | ||||
| decw %ax # Verify off | decw %ax # Verify off | ||||
| orb $0x40,%ah # Use disk packet | orb $0x40,%ah # Use disk packet | ||||
| 1: int $0x13 # BIOS: Disk I/O | 1: int $0x13 # BIOS: Disk I/O | ||||
| movw %di,%sp # Restore | movw %di,%sp # Restore | ||||
| popw %si # Restore | popw %si # Restore | ||||
| retw # To caller | retw # To caller | ||||
| #if defined(SIO) && defined(RESET_TERM) | |||||
| /* | |||||
| * Reset terminal ANSI/VT100 sequence | |||||
freqlabs: s/teminal/terminal/ | |||||
| */ | |||||
| resetterm: | |||||
| .byte 0x1b; .byte 'c'|0x80 | |||||
| #endif | |||||
| /* | /* | ||||
| * Various menu strings. 'item' goes after 'prompt' to save space. | * Various menu strings. 'item' goes after 'prompt' to save space. | ||||
| * Also use shorter versions to make room for the PXE/INT18 code. | * Also use shorter versions to make room for the PXE/INT18 code. | ||||
| */ | */ | ||||
| prompt: | prompt: | ||||
| #ifdef PXE | #ifdef PXE | ||||
| .ascii "\nF6 PXE\r" | .ascii "\nF6 PXE\r" | ||||
| ▲ Show 20 Lines • Show All 89 Lines • Show Last 20 Lines | |||||
s/teminal/terminal/