| 160,6 → 160,69 |
|---|
| endp |
| |
| align 4 |
| |
| init_BIOS32: |
| mov edi, 0xE0000 |
| .pcibios_nxt: |
| cmp dword[edi], '_32_' ; "magic" word |
| je .BIOS32_found |
| .pcibios_nxt2: |
| add edi, 0x10 |
| cmp edi, 0xFFFF0 |
| je .BIOS32_not_found |
| jmp .pcibios_nxt |
| .BIOS32_found: ; magic word found, check control summ |
| |
| movzx ecx, byte[edi + 9] |
| shl ecx, 4 |
| mov esi, edi |
| xor eax, eax |
| cld ; paranoia |
| @@: lodsb |
| add ah, al |
| loop @b |
| jnz .pcibios_nxt2 ; control summ must be zero |
| ; BIOS32 service found ! |
| mov ebp, [edi + 4] |
| mov [bios32_entry], ebp |
| ; check PCI BIOS present |
| mov eax, '$PCI' |
| xor ebx, ebx |
| push cs ; special for 'ret far' from BIOS |
| call ebp |
| test al, al |
| jnz .PCI_BIOS32_not_found |
| |
| ; çäåñü ñîçäàþòñÿ äèñêðèïòîðû äëÿ PCI BIOS |
| |
| add ebx, OS_BASE |
| dec ecx |
| mov [(pci_code_32-OS_BASE)], cx ;limit 0-15 |
| mov [(pci_data_32-OS_BASE)], cx ;limit 0-15 |
| |
| mov [(pci_code_32-OS_BASE)+2], bx ;base 0-15 |
| mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15 |
| |
| shr ebx, 16 |
| mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23 |
| mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23 |
| |
| shr ecx, 16 |
| and cl, 0x0F |
| mov ch, bh |
| add cx, D32 |
| mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 & |
| mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31 |
| |
| mov [(pci_bios_entry-OS_BASE)], edx |
| ; jmp .end |
| .PCI_BIOS32_not_found: |
| ; çäåñü äîëæíà çàïîëíÿòñÿ pci_emu_dat |
| .BIOS32_not_found: |
| .end: |
| |
| |
| align 4 |
| proc test_cpu |
| locals |
| cpu_type dd ? |