| 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : Sets IDE Device specific parameters to DPT.
|
|---|
| 3 |
|
|---|
| 4 | ; Section containing code
|
|---|
| 5 | SECTION .text
|
|---|
| 6 |
|
|---|
| 7 | ;--------------------------------------------------------------------
|
|---|
| 8 | ; IdeDPT_Finalize
|
|---|
| 9 | ; Parameters:
|
|---|
| 10 | ; DS:DI: Ptr to Disk Parameter Table
|
|---|
| 11 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
|
|---|
| 12 | ; CS:BP: Ptr to IDEVARS for the controller
|
|---|
| 13 | ; Returns:
|
|---|
| 14 | ; Nothing
|
|---|
| 15 | ; Corrupts registers:
|
|---|
| 16 | ; AX
|
|---|
| 17 | ;--------------------------------------------------------------------
|
|---|
| 18 | IdeDPT_Finalize:
|
|---|
| 19 | ; Fall to .StoreBlockMode
|
|---|
| 20 |
|
|---|
| 21 | ;--------------------------------------------------------------------
|
|---|
| 22 | ; .StoreBlockMode
|
|---|
| 23 | ; Parameters:
|
|---|
| 24 | ; DS:DI: Ptr to Disk Parameter Table
|
|---|
| 25 | ; ES:SI: Ptr to 512-byte ATA information read from the drive
|
|---|
| 26 | ; CS:BP: Ptr to IDEVARS for the controller
|
|---|
| 27 | ; Returns:
|
|---|
| 28 | ; Nothing
|
|---|
| 29 | ; Corrupts registers:
|
|---|
| 30 | ; AX
|
|---|
| 31 | ;--------------------------------------------------------------------
|
|---|
| 32 | .StoreBlockMode:
|
|---|
| 33 | mov al, 1
|
|---|
| 34 | mov ah, [es:si+ATA1.bBlckSize] ; Max block size in sectors
|
|---|
| 35 | mov [di+DPT_ATA.wSetAndMaxBlock], ax
|
|---|
| 36 | ; Fall to IdeDPT_StoreReversedAddressLinesFlagIfNecessary
|
|---|
| 37 |
|
|---|
| 38 | ;--------------------------------------------------------------------
|
|---|
| 39 | ; IdeDPT_StoreReversedAddressLinesFlagIfNecessary
|
|---|
| 40 | ; Parameters:
|
|---|
| 41 | ; DS:DI: Ptr to Disk Parameter Table
|
|---|
| 42 | ; CS:BP: Ptr to IDEVARS for the controller
|
|---|
| 43 | ; Returns:
|
|---|
| 44 | ; Nothing
|
|---|
| 45 | ; Corrupts registers:
|
|---|
| 46 | ; Nothing
|
|---|
| 47 | ;--------------------------------------------------------------------
|
|---|
| 48 | IdeDPT_StoreReversedAddressLinesFlagIfNecessary:
|
|---|
| 49 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0
|
|---|
| 50 | jne SHORT .EndDPT
|
|---|
| 51 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3
|
|---|
| 52 |
|
|---|
| 53 | .EndDPT:
|
|---|
| 54 | ret
|
|---|
