1 | ; Project name : XTIDE Universal BIOS |
---|
2 | ; Description : Boot Menu event handler for menu library callbacks. |
---|
3 | |
---|
4 | ; |
---|
5 | ; XTIDE Universal BIOS and Associated Tools |
---|
6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. |
---|
7 | ; |
---|
8 | ; This program is free software; you can redistribute it and/or modify |
---|
9 | ; it under the terms of the GNU General Public License as published by |
---|
10 | ; the Free Software Foundation; either version 2 of the License, or |
---|
11 | ; (at your option) any later version. |
---|
12 | ; |
---|
13 | ; This program is distributed in the hope that it will be useful, |
---|
14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
16 | ; GNU General Public License for more details. |
---|
17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
---|
18 | ; |
---|
19 | |
---|
20 | ; Section containing code |
---|
21 | SECTION .text |
---|
22 | |
---|
23 | ;-------------------------------------------------------------------- |
---|
24 | ; GetMenuitemToDXforDriveInDL |
---|
25 | ; Parameters: |
---|
26 | ; DL: Drive number |
---|
27 | ; Returns: |
---|
28 | ; DX: Menuitem index (assuming drive is available) |
---|
29 | ; Corrupts registers: |
---|
30 | ; AX |
---|
31 | ;-------------------------------------------------------------------- |
---|
32 | GetMenuitemToDXforDriveInDL: |
---|
33 | xor dh, dh ; Drive number now in DX |
---|
34 | test dl, dl |
---|
35 | jns SHORT .ReturnItemIndexInDX ; Return if floppy drive (HD bit not set) |
---|
36 | call FloppyDrive_GetCountToAX |
---|
37 | and dl, ~80h ; Clear HD bit |
---|
38 | add dx, ax |
---|
39 | .ReturnItemIndexInDX: |
---|
40 | ret |
---|
41 | |
---|
42 | |
---|
43 | ;-------------------------------------------------------------------- |
---|
44 | ; BootMenuEvent_Handler |
---|
45 | ; Common parameters for all events: |
---|
46 | ; BX: Menu event (anything from MENUEVENT struct) |
---|
47 | ; SS:BP: Menu library handle |
---|
48 | ; Common return values for all events: |
---|
49 | ; CF: Set if event processed |
---|
50 | ; Cleared if event not processed |
---|
51 | ; Corrupts registers: |
---|
52 | ; All |
---|
53 | ;-------------------------------------------------------------------- |
---|
54 | BootMenuEvent_Handler: |
---|
55 | LOAD_BDA_SEGMENT_TO es, di |
---|
56 | call RamVars_GetSegmentToDS |
---|
57 | |
---|
58 | %ifdef MENUEVENT_INLINE_OFFSETS |
---|
59 | |
---|
60 | add bx, FirstEvent |
---|
61 | jmp bx |
---|
62 | |
---|
63 | .EventNotHandled: |
---|
64 | .DoNotSetDefaultMenuitem: |
---|
65 | xor dx, dx ; Clear CF (and menuitem index for DoNotSetDefaultMenuitem) |
---|
66 | ret |
---|
67 | |
---|
68 | MENUEVENT_InitializeMenuinitFromDSSI equ (EventInitializeMenuinitFromSSBP - FirstEvent) |
---|
69 | MENUEVENT_ExitMenu equ (BootMenuEvent_Completed - FirstEvent) |
---|
70 | MENUEVENT_ItemHighlightedFromCX equ (EventItemHighlightedFromCX - FirstEvent) |
---|
71 | MENUEVENT_ItemSelectedFromCX equ (EventItemSelectedFromCX - FirstEvent) |
---|
72 | MENUEVENT_RefreshTitle equ (BootMenuPrint_TitleStrings - FirstEvent) |
---|
73 | MENUEVENT_RefreshInformation equ (BootMenuPrint_RefreshInformation - FirstEvent) |
---|
74 | MENUEVENT_RefreshItemFromCX equ (BootMenuPrint_RefreshItem - FirstEvent) |
---|
75 | ; |
---|
76 | ; Note that there is no entry for MENUEVENT_IdleProcessing. If MENUEVENT_IDLEPROCESSING_ENABLE is not %defined, |
---|
77 | ; then the entry point will not be called (saving memory on this end and at the CALL point). |
---|
78 | ; |
---|
79 | |
---|
80 | %else |
---|
81 | |
---|
82 | cmp bx, BYTE MENUEVENT.RefreshItemFromCX ; Above last supported item? |
---|
83 | ja SHORT .EventNotHandled |
---|
84 | jmp [cs:bx+rgfnEventSpecificHandlers] |
---|
85 | |
---|
86 | .EventNotHandled: |
---|
87 | .DoNotSetDefaultMenuitem: |
---|
88 | xor dx, dx ; Clear CF (and menuitem index for DoNotSetDefaultMenuitem) |
---|
89 | ret |
---|
90 | |
---|
91 | rgfnEventSpecificHandlers: |
---|
92 | dw EventInitializeMenuinitFromSSBP ; MENUEVENT.InitializeMenuinitFromDSSI |
---|
93 | dw EventCompleted ; MENUEVENT.ExitMenu |
---|
94 | dw EventNotHandled ; MENUEVENT.IdleProcessing |
---|
95 | dw EventItemHighlightedFromCX ; MENUEVENT.ItemHighlightedFromCX |
---|
96 | dw EventItemSelectedFromCX ; MENUEVENT.ItemSelectedFromCX |
---|
97 | dw EventKeyStrokeInAX ; MENUEVENT.KeyStrokeInAX |
---|
98 | dw BootMenuPrint_TitleStrings ; MENUEVENT.RefreshTitle |
---|
99 | dw BootMenuPrint_RefreshInformation ; MENUEVENT.RefreshInformation |
---|
100 | dw BootMenuPrint_RefreshItem ; MENUEVENT.RefreshItemFromCX |
---|
101 | |
---|
102 | %endif |
---|
103 | |
---|
104 | |
---|
105 | ;-------------------------------------------------------------------- |
---|
106 | ; EventInitializeMenuinitFromSSBP |
---|
107 | ; Parameters |
---|
108 | ; DS: Ptr to RAMVARS |
---|
109 | ; ES: Ptr to BDA (zero) |
---|
110 | ; SS:BP: Ptr to MENUINIT struct to initialize |
---|
111 | ; Returns: |
---|
112 | ; CF: Set if event processed |
---|
113 | ; Cleared if event not processed |
---|
114 | ; Corrupts registers: |
---|
115 | ; Does not matter |
---|
116 | ;-------------------------------------------------------------------- |
---|
117 | FirstEvent: |
---|
118 | EventInitializeMenuinitFromSSBP: |
---|
119 | ; Store default Menuitem (=default drive to boot from) |
---|
120 | xor dx, dx |
---|
121 | mov [bp+MENUINIT.wHighlightedItem], dx |
---|
122 | |
---|
123 | ; Store number of Menuitems |
---|
124 | call RamVars_GetHardDiskCountFromBDAtoAX |
---|
125 | xchg ax, cx |
---|
126 | call FloppyDrive_GetCountToAX |
---|
127 | add ax, cx |
---|
128 | inc ax ; extra entry for ROM Boot item |
---|
129 | mov [bp+MENUINIT.wItems], ax |
---|
130 | |
---|
131 | ; Store menu size |
---|
132 | mov WORD [bp+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES |
---|
133 | mov BYTE [bp+MENUINIT.bWidth], BOOT_MENU_WIDTH |
---|
134 | add al, BOOT_MENU_HEIGHT_WITHOUT_ITEMS |
---|
135 | xchg cx, ax |
---|
136 | CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH |
---|
137 | MIN_U ah, cl |
---|
138 | mov [bp+MENUINIT.bHeight], ah |
---|
139 | |
---|
140 | ; Store selection timeout |
---|
141 | mov ax, [cs:ROMVARS.wBootTimeout] |
---|
142 | CALL_MENU_LIBRARY StartSelectionTimeoutWithTicksInAX |
---|
143 | stc |
---|
144 | ret |
---|
145 | |
---|
146 | |
---|
147 | ;-------------------------------------------------------------------- |
---|
148 | ; EventItemHighlightedFromCX |
---|
149 | ; Parameters |
---|
150 | ; CX: Index of new highlighted item |
---|
151 | ; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED |
---|
152 | ; DS: Ptr to RAMVARS |
---|
153 | ; ES: Ptr to BDA (zero) |
---|
154 | ; SS:BP: Menu library handle |
---|
155 | ; Returns: |
---|
156 | ; CF: Set if event processed |
---|
157 | ; Cleared if event not processed |
---|
158 | ; Corrupts registers: |
---|
159 | ; Does not matter |
---|
160 | ;-------------------------------------------------------------------- |
---|
161 | EventItemHighlightedFromCX: |
---|
162 | push cx |
---|
163 | call BootMenu_GetDriveToDXforMenuitemInCX |
---|
164 | jnc .noDriveSwap |
---|
165 | call DriveXlate_SetDriveToSwap |
---|
166 | .noDriveSwap: |
---|
167 | |
---|
168 | ; Redraw changes in drive numbers |
---|
169 | xor ax, ax ; Update first floppy drive (for translated drive number) |
---|
170 | CALL_MENU_LIBRARY RefreshItemFromAX |
---|
171 | mov dl, 80h |
---|
172 | call GetMenuitemToDXforDriveInDL |
---|
173 | xchg ax, dx ; Update first hard disk (for translated drive number) |
---|
174 | CALL_MENU_LIBRARY RefreshItemFromAX |
---|
175 | pop ax ; Update new item (for translated drive number) |
---|
176 | CALL_MENU_LIBRARY RefreshItemFromAX |
---|
177 | CALL_MENU_LIBRARY RefreshInformation |
---|
178 | stc |
---|
179 | ret |
---|
180 | |
---|
181 | |
---|
182 | ;-------------------------------------------------------------------- |
---|
183 | ; EventItemSelectedFromCX |
---|
184 | ; Parameters |
---|
185 | ; CX: Index of selected item |
---|
186 | ; DS: Ptr to RAMVARS |
---|
187 | ; ES: Ptr to BDA (zero) |
---|
188 | ; SS:BP: Menu library handle |
---|
189 | ; Returns: |
---|
190 | ; CF: Set if event processed |
---|
191 | ; Cleared if event not processed |
---|
192 | ; Corrupts registers: |
---|
193 | ; Does not matter |
---|
194 | ;-------------------------------------------------------------------- |
---|
195 | EventItemSelectedFromCX: |
---|
196 | ; Fall to CloseBootMenu |
---|
197 | |
---|
198 | |
---|
199 | ;-------------------------------------------------------------------- |
---|
200 | ; CloseBootMenu |
---|
201 | ; Parameters |
---|
202 | ; DS: RAMVARS segment |
---|
203 | ; ES: BDA segment (zero) |
---|
204 | ; Returns: |
---|
205 | ; Nothing |
---|
206 | ; Corrupts registers: |
---|
207 | ; Does not matter |
---|
208 | ;-------------------------------------------------------------------- |
---|
209 | CloseBootMenu: |
---|
210 | CALL_MENU_LIBRARY Close |
---|
211 | ; Fall to BootMenuEvent_Completed |
---|
212 | |
---|
213 | |
---|
214 | ;-------------------------------------------------------------------- |
---|
215 | ; BootMenuEvent_Completed |
---|
216 | ; Parameters |
---|
217 | ; Nothing |
---|
218 | ; Returns: |
---|
219 | ; CF: Set to exit from menu |
---|
220 | ; Corrupts registers: |
---|
221 | ; Nothing |
---|
222 | ;-------------------------------------------------------------------- |
---|
223 | BootMenuEvent_Completed: |
---|
224 | stc |
---|
225 | ret |
---|