| 0,0 → 1,82 |
|---|
| include 'cfg_bios.inc' |
| use16 |
| ;org 0 |
| |
| rom_header: |
| ; PnP Option ROM header |
| rom_signature dw 0xAA55 ; +0 : magic |
| rom_length db BIOS_BOOT_BLOCK_SIZE ; +2 : number of 512byte blocks |
| rom_entry: |
| jmp init_entry ; +3 : initialization entry point |
| db 'AZ' |
| rom_reserved rb 0x11 ; +7 : reserved (17 bytes) |
| rom_pci_struc dw pci_header ; +18h : offset to PCI data structure |
| rom_expansion dw pnp_header ; +1Ah : offset to expansion header structure |
| |
| align 16 |
| pnp_header: |
| ; PnP Expansion Header |
| pnp_signature db '$PnP' ; +0 : magic |
| pnp_revision db 1 ; +4 : revision |
| pnp_length db 2 ; +5 : length (in 16byte paragraphs) |
| pnp_next dw 0 ; +6 : offset of the next header (0 if none) |
| pnp_reserv1 db 0 ; +8 |
| pnp_checksum db 0 ; +9 : checksum |
| pnp_devid dd 0x0 ; +A : device identifier |
| pnp_manstr dw manstr ; +E : pointer to manufacturer string |
| pnp_prodstr dw prodstr ; +10 : pointer to product name string |
| pnp_devtype1 db 2 ; +12 : device type code |
| pnp_devtype2 dw 0x000 |
| pnp_devind db 0x14 ; +15 : device indicators |
| pnp_bcv dw 0 ; +16 : boot connection vector (must be 0) |
| pnp_discv dw 0 ; +18 : disconnect vector |
| pnp_bev dw boot_entry ; +1A : boot entry vector |
| pnp_reserv2 dw 0 ; +1C |
| pnp_info dw 0 ; +1E : static resource information vector |
| |
| align 16 |
| pci_header: |
| ; PCI Data Structure |
| pci_magic db 'PCIR' ; +0 : magic |
| pci_vendor dw BIOS_PCI_VENDOR ; +4 : |
| pci_device dw BIOS_PCI_DEVICE ; +6 : sb700 PCI bridge |
| pci_vdata dw 0 ; +8 : vital product data offset |
| pci_length dw 0x18 ; +A : PCI data structure length |
| pci_classrev dd BIOS_PCI_CLASS ; +C : rev.00 + class 04.00.00 |
| pci_size dw BIOS_BOOT_BLOCK_SIZE ; +10 : image length (512byte blocks) |
| pci_rev dw 0 ; +12 |
| pci_codetype db 0 ; +14 : x86 |
| pci_indicator db 0x80 ; +15 : last image |
| pci_reserved dw 0 |
| |
| align 4 |
| manstr: |
| db 'Kolibri-A Operation System',0 |
| prodstr: |
| db 'ver.ROM-0.1',0 |
| |
| align 4 |
| boot_entry: |
| @@: |
| |
| |
| boot_failure: |
| int 18h ; return to BIOS Boot sequence |
| |
| align 4 |
| init_entry: |
| xor ax, ax |
| mov [cs:rom_length], al |
| mov al, 0x20 |
| retf |
| |
| |
| check = 0 |
| repeat $-$$ |
| load a byte from $$+%-1 |
| check = a + check |
| end repeat |
| |
| check_byte db 0x100 - (check mod 256) |
| |
| times (512-$) db 0 |