source: xtideuniversalbios/tags/XTIDE_Universal_BIOS_v2.0.0_beta1/Src/Boot/BootMenuPrintCfg.asm@ 486

Last change on this file since 486 was 294, checked in by krille_n_@…, 12 years ago

Commit 2/2 (BIOS):

  • Fixed a bug in AH1h_HStatus.asm.
  • Minor optimizations.
  • Fixed spelling and did some cleaning.
File size: 3.5 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Functions for printing drive configuration
3; information on Boot Menu.
4;
5; Included by BootMenuPrint.asm, this routine is to be inserted into
6; BootMenuPrint_HardDiskRefreshInformation.
7;
8; Section containing code
9SECTION .text
10
11;;; fall-into from BootMenuPrint_HardDiskRefreshInformation.
12
13;--------------------------------------------------------------------
14; Prints Hard Disk configuration for drive handled by our BIOS.
15; Cursor is set to configuration header string position.
16;
17; BootMenuPrintCfg_ForOurDrive
18; Parameters:
19; DS:DI: Pointer to DPT
20; Returns:
21; Nothing
22; Corrupts registers:
23; AX, BX, CX, DX
24;--------------------------------------------------------------------
25.BootMenuPrintCfg_ForOurDrive:
26 eMOVZX ax, [di+DPT.bIdevarsOffset]
27 xchg bx, ax ; CS:BX now points to IDEVARS
28 ; Fall to .PushAndFormatCfgString
29
30;--------------------------------------------------------------------
31; PushAddressingMode
32; Parameters:
33; DS:DI: Ptr to DPT
34; CS:BX: Ptr to IDEVARS
35; Returns:
36; Nothing (jumps to next push below)
37; Corrupts registers:
38; AX, CX
39;--------------------------------------------------------------------
40.PushAddressingMode:
41 AccessDPT_GetUnshiftedAddressModeToALZF
42 ;;
43 ;; This multiply both shifts the addressing mode bits down to low order bits, and
44 ;; at the same time multiplies by the size of the string displacement. The result is in AH,
45 ;; with AL clear, and so we exchange AL and AH after the multiply for the final result.
46 ;;
47 mov cl,(1<<(8-ADDRESSING_MODE_FIELD_POSITION)) * g_szAddressingModes_Displacement
48 mul cl
49 xchg al,ah
50 add ax,g_szAddressingModes
51 push ax
52
53;--------------------------------------------------------------------
54; PushBlockMode
55; Parameters:
56; DS:DI: Ptr to DPT
57; CS:BX: Ptr to IDEVARS
58; Returns:
59; Nothing (falls to next push below)
60; Corrupts registers:
61; AX
62;--------------------------------------------------------------------
63.PushBlockMode:
64 mov ax, 1
65 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED
66 jz SHORT .PushBlockSizeFromAX
67 mov al, [di+DPT_ATA.bSetBlock]
68.PushBlockSizeFromAX:
69 push ax
70
71;--------------------------------------------------------------------
72; PushBusType
73; Parameters:
74; DS:DI: Ptr to DPT
75; CS:BX: Ptr to IDEVARS
76; Returns:
77; Nothing (jumps to next push below)
78; Corrupts registers:
79; AX, DX
80;--------------------------------------------------------------------
81.PushBusType:
82 mov al,g_szBusTypeValues_Displacement
83 mul BYTE [cs:bx+IDEVARS.bDevice]
84
85 shr ax,1 ; divide by 2 since IDEVARS.bDevice is multiplied by 2
86
87 add ax,g_szBusTypeValues
88 push ax
89
90;--------------------------------------------------------------------
91; PushIRQ
92; Parameters:
93; DS:DI: Ptr to DPT
94; CS:BX: Ptr to IDEVARS
95; Returns:
96; Nothing (falls to next push below)
97; Corrupts registers:
98; AX, DX
99;--------------------------------------------------------------------
100.PushIRQ:
101 mov al, [cs:bx+IDEVARS.bIRQ]
102 cbw
103 push ax
104
105;--------------------------------------------------------------------
106; PushResetStatus
107; Parameters:
108; DS:DI: Ptr to DPT
109; CS:BX: Ptr to IDEVARS
110; Returns:
111; Nothing (falls to next push below)
112; Corrupts registers:
113; AX
114;--------------------------------------------------------------------
115.PushResetStatus:
116 mov al, [di+DPT.bFlagsHigh]
117 and al, MASKH_DPT_RESET ; ah already zero from last push
118 push ax
119
120;;; fall-out to BootMenuPrint_HardDiskRefreshInformation.
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