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BootMenuSettingsMenu.asm

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Last change on this file was 625, checked in by Krister Nordvall, 21 months ago

Changes:

Added a configuration option to let the BIOS store RamVars to an UMB when Full operating mode is enabled. This is primarily for XT class machines with RAM in the UMA (which apparently is a common thing these days).
Added two new builds specifically for IBM PS/2 machines. This is for support of the new McIDE adapter from the guys at zzxio.com. Note that the additional hardware specific code (under the USE_PS2 define) is for the PS/2 machines themselves and not for the McIDE adapters, so any controller in an IBM PS/2 machine can be used with the USE_PS2 define.
Moved pColorTheme out of the range of ROMVARS being copied over when doing "Load old settings from EEPROM" in XTIDECFG. This fixed a serious bug from r592 where loading a BIOS from file and then loading the old settings from ROM would corrupt 7 bytes of code somewhere in the loaded BIOS.
Optimizations (speed and size) to the library. Browsing the menus in XTIDECFG should now feel a little less sluggish.
Hopefully fixed a problem with the PostCommitHook script where it sometimes wouldn't find the CommitInProgress file. I say hopefully because testing this is a nightmare.

File size: 17.7 KB

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1	; Project name : XTIDE Universal BIOS Configurator v2
2	; Description : "Boot settings" menu structs and functions.
3
4	;
5	; XTIDE Universal BIOS and Associated Tools
6	; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2023 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 initialized data
21	SECTION .data
22
23	ALIGN WORD_ALIGN
24	g_MenupageForBootMenuSettingsMenu:
25	istruc MENUPAGE
26	at MENUPAGE.fnEnter, dw BootMenuSettingsMenu_EnterMenuOrModifyItemVisibility
27	at MENUPAGE.fnBack, dw ConfigurationMenu_EnterMenuOrModifyItemVisibility
28	at MENUPAGE.wMenuitems, dw 8
29	iend
30
31	g_MenuitemBootMnuStngsBackToConfigurationMenu:
32	istruc MENUITEM
33	at MENUITEM.fnActivate, dw ConfigurationMenu_EnterMenuOrModifyItemVisibility
34	at MENUITEM.szName, dw g_szItemBackToCfgMenu
35	at MENUITEM.szQuickInfo, dw g_szNfoIdeBackToCfgMenu
36	at MENUITEM.szHelp, dw g_szNfoIdeBackToCfgMenu
37	at MENUITEM.bFlags, db FLG_MENUITEM_VISIBLE
38	at MENUITEM.bType, db TYPE_MENUITEM_PAGEBACK
39	iend
40
41	g_MenuitemBootMnuStngsDisplayMode:
42	istruc MENUITEM
43	at MENUITEM.fnActivate, dw Menuitem_ActivateMultichoiceSelectionForMenuitemInDSSI
44	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteLookupValueStringToBufferInESDIfromUnshiftedItemInDSSI
45	at MENUITEM.szName, dw g_szItemBootDispMode
46	at MENUITEM.szQuickInfo, dw g_szNfoDispMode
47	at MENUITEM.szHelp, dw g_szNfoDispMode
48	at MENUITEM.bFlags, db FLG_MENUITEM_VISIBLE
49	at MENUITEM.bType, db TYPE_MENUITEM_MULTICHOICE
50	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.wDisplayMode
51	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgBootDispMode
52	at MENUITEM.itemValue + ITEM_VALUE.szMultichoice, dw g_szMultichoiceBootDispMode
53	at MENUITEM.itemValue + ITEM_VALUE.rgwChoiceToValueLookup, dw g_rgwChoiceToValueLookupForDisplayModes
54	at MENUITEM.itemValue + ITEM_VALUE.rgszValueToStringLookup, dw g_rgszValueToStringLookupForDisplayModes
55	iend
56
57	g_MenuitemBootMnuStngsColorTheme:
58	istruc MENUITEM
59	at MENUITEM.fnActivate, dw Menuitem_ActivateMultichoiceSelectionForMenuitemInDSSI
60	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteLookupValueStringToBufferInESDIfromUnshiftedItemInDSSI
61	at MENUITEM.szName, dw g_szItemColorTheme
62	at MENUITEM.szQuickInfo, dw g_szNfoColorTheme
63	at MENUITEM.szHelp, dw g_szHelpColorTheme
64	at MENUITEM.bFlags, db FLG_MENUITEM_VISIBLE \| FLG_MENUITEM_MODIFY_MENU
65	at MENUITEM.bType, db TYPE_MENUITEM_MULTICHOICE
66	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.pColorTheme ; Only ever read - never modified
67	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgColorTheme
68	at MENUITEM.itemValue + ITEM_VALUE.szMultichoice, dw g_szMultichoiceColorTheme
69	at MENUITEM.itemValue + ITEM_VALUE.rgwChoiceToValueLookup, dw NULL
70	at MENUITEM.itemValue + ITEM_VALUE.rgszValueToStringLookup, dw g_rgszValueToStringLookupForColorTheme
71	at MENUITEM.itemValue + ITEM_VALUE.fnValueReader, dw ReadColorTheme
72	at MENUITEM.itemValue + ITEM_VALUE.fnValueWriter, dw WriteColorTheme
73	iend
74
75	g_MenuitemBootMnuStngsFloppyDrives:
76	istruc MENUITEM
77	at MENUITEM.fnActivate, dw Menuitem_ActivateMultichoiceSelectionForMenuitemInDSSI
78	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteLookupValueStringToBufferInESDIfromUnshiftedItemInDSSI
79	at MENUITEM.szName, dw g_szItemBootFloppyDrvs
80	at MENUITEM.szQuickInfo, dw g_szNfoBootFloppyDrvs
81	at MENUITEM.szHelp, dw g_szHelpBootFloppyDrvs
82	at MENUITEM.bFlags, db FLG_MENUITEM_VISIBLE \| FLG_MENUITEM_BYTEVALUE
83	at MENUITEM.bType, db TYPE_MENUITEM_MULTICHOICE
84	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.bMinFddCnt
85	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgBootFloppyDrvs
86	at MENUITEM.itemValue + ITEM_VALUE.szMultichoice, dw g_szMultichoiceBootFloppyDrvs
87	at MENUITEM.itemValue + ITEM_VALUE.rgwChoiceToValueLookup, dw NULL
88	at MENUITEM.itemValue + ITEM_VALUE.rgszValueToStringLookup, dw g_rgszValueToStringLookupForFloppyDrives
89	iend
90
91	g_MenuitemBootMenuSerialScanDetect:
92	istruc MENUITEM
93	at MENUITEM.fnActivate, dw Menuitem_ActivateMultichoiceSelectionForMenuitemInDSSI
94	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteLookupValueStringToBufferInESDIfromShiftedItemInDSSI
95	at MENUITEM.szName, dw g_szItemSerialDetect
96	at MENUITEM.szQuickInfo, dw g_szNfoSerialDetect
97	at MENUITEM.szHelp, dw g_szHelpSerialDetect
98	at MENUITEM.bFlags, db FLG_MENUITEM_FLAGVALUE
99	at MENUITEM.bType, db TYPE_MENUITEM_MULTICHOICE
100	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.wFlags
101	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgSerialDetect
102	at MENUITEM.itemValue + ITEM_VALUE.szMultichoice, dw g_szMultichoiceBooleanFlag
103	at MENUITEM.itemValue + ITEM_VALUE.rgszValueToStringLookup, dw g_rgszValueToStringLookupForFlagBooleans
104	at MENUITEM.itemValue + ITEM_VALUE.wValueBitmask, dw FLG_ROMVARS_SERIAL_SCANDETECT
105	iend
106
107	g_MenuitemBootMnuStngsDefaultBootDrive:
108	istruc MENUITEM
109	at MENUITEM.fnActivate, dw Menuitem_ActivateHexInputForMenuitemInDSSI
110	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteHexValueStringToBufferInESDIfromItemInDSSI
111	at MENUITEM.szName, dw g_szItemBootDrive
112	at MENUITEM.szQuickInfo, dw g_szNfoBootDrive
113	at MENUITEM.szHelp, dw g_szHelpBootDrive
114	at MENUITEM.bFlags, db FLG_MENUITEM_BYTEVALUE
115	at MENUITEM.bType, db TYPE_MENUITEM_HEX
116	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.bBootDrv
117	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgBootDrive
118	at MENUITEM.itemValue + ITEM_VALUE.wMinValue, dw 0
119	at MENUITEM.itemValue + ITEM_VALUE.wMaxValue, dw 0FFh
120	iend
121
122	g_MenuitemBootMnuStngsSelectionTimeout:
123	istruc MENUITEM
124	at MENUITEM.fnActivate, dw Menuitem_ActivateUnsignedInputForMenuitemInDSSI
125	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteUnsignedValueStringToBufferInESDIfromItemInDSSI
126	at MENUITEM.szName, dw g_szItemBootTimeout
127	at MENUITEM.szQuickInfo, dw g_szNfoBootTimeout
128	at MENUITEM.szHelp, dw g_szHelpBootTimeout
129	at MENUITEM.bFlags, db NULL
130	at MENUITEM.bType, db TYPE_MENUITEM_UNSIGNED
131	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.wBootTimeout
132	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgBootTimeout
133	at MENUITEM.itemValue + ITEM_VALUE.wMinValue, dw 2
134	at MENUITEM.itemValue + ITEM_VALUE.wMaxValue, dw 1092
135	iend
136
137	g_MenuitemBootMnuStngsClearBdaDriveCount:
138	istruc MENUITEM
139	at MENUITEM.fnActivate, dw Menuitem_ActivateMultichoiceSelectionForMenuitemInDSSI
140	at MENUITEM.fnFormatValue, dw MenuitemPrint_WriteLookupValueStringToBufferInESDIfromShiftedItemInDSSI
141	at MENUITEM.szName, dw g_szItemClearBdaDriveCount
142	at MENUITEM.szQuickInfo, dw g_szNfoClearBdaDriveCount
143	at MENUITEM.szHelp, dw g_szHelpClearBdaDriveCount
144	at MENUITEM.bFlags, db FLG_MENUITEM_VISIBLE \| FLG_MENUITEM_FLAGVALUE
145	at MENUITEM.bType, db TYPE_MENUITEM_MULTICHOICE
146	at MENUITEM.itemValue + ITEM_VALUE.wRomvarsValueOffset, dw ROMVARS.wFlags
147	at MENUITEM.itemValue + ITEM_VALUE.szDialogTitle, dw g_szDlgClearBdaDriveCount
148	at MENUITEM.itemValue + ITEM_VALUE.szMultichoice, dw g_szMultichoiceBooleanFlag
149	at MENUITEM.itemValue + ITEM_VALUE.rgszValueToStringLookup, dw g_rgszValueToStringLookupForFlagBooleans
150	at MENUITEM.itemValue + ITEM_VALUE.wValueBitmask, dw FLG_ROMVARS_CLEAR_BDA_HD_COUNT
151	iend
152
153
154	g_rgwChoiceToValueLookupForDisplayModes:
155	dw DEFAULT_TEXT_MODE
156	dw CGA_TEXT_MODE_BW40
157	dw CGA_TEXT_MODE_CO40
158	dw CGA_TEXT_MODE_BW80
159	dw CGA_TEXT_MODE_CO80
160	dw MDA_TEXT_MODE
161	g_rgszValueToStringLookupForDisplayModes:
162	dw g_szValueBootDispModeBW40
163	dw g_szValueBootDispModeCO40
164	dw g_szValueBootDispModeBW80
165	dw g_szValueBootDispModeCO80
166	dw g_szValueBootDispModeDefault
167	dw NULL
168	dw NULL
169	dw g_szValueBootDispModeMono
170
171	g_rgszValueToStringLookupForFloppyDrives:
172	dw g_szValueBootFloppyDrvsAuto
173	dw g_szValueBootFloppyDrvs1
174	dw g_szValueBootFloppyDrvs2
175	dw g_szValueBootFloppyDrvs3
176	dw g_szValueBootFloppyDrvs4
177
178	g_rgszValueToStringLookupForColorTheme:
179	dw g_szValueColorTheme0
180	dw g_szValueColorTheme1
181	dw g_szValueColorTheme2
182	dw g_szValueColorTheme3
183	dw g_szValueColorTheme4
184	dw g_szValueColorTheme5
185
186	ColorThemeTable:
187	; Note! If there's ever a need to add, remove or change a theme or reorder the themes then the ROMVARS version must be incremented.
188	; Classic (default)
189	db COLOR_ATTRIBUTE(COLOR_YELLOW, COLOR_BLUE) ; .cBordersAndBackground
190	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
191	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLUE) ; .cTitle
192	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLUE) ; .cItem
193	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_CYAN) ; .cHighlightedItem
194	db COLOR_ATTRIBUTE(COLOR_RED, COLOR_BLUE) \| FLG_COLOR_BLINK ; .cHurryTimeout
195	db COLOR_ATTRIBUTE(COLOR_GREEN, COLOR_BLUE) ; .cNormalTimeout
196	; Argon Blue
197	db COLOR_ATTRIBUTE(COLOR_LIGHT_BLUE, COLOR_BLACK) ; .cBordersAndBackground
198	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
199	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLACK) ; .cTitle
200	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLACK) ; .cItem
201	db COLOR_ATTRIBUTE(COLOR_LIGHT_BLUE, COLOR_BLACK) ; .cHighlightedItem
202	db COLOR_ATTRIBUTE(COLOR_LIGHT_BLUE, COLOR_BLACK) \| FLG_COLOR_BLINK ; .cHurryTimeout
203	db COLOR_ATTRIBUTE(COLOR_LIGHT_BLUE, COLOR_BLACK) ; .cNormalTimeout
204	; Neon Red
205	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) ; .cBordersAndBackground
206	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
207	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLACK) ; .cTitle
208	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLACK) ; .cItem
209	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) ; .cHighlightedItem
210	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) \| FLG_COLOR_BLINK ; .cHurryTimeout
211	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) ; .cNormalTimeout
212	; Phosphor Green
213	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) ; .cBordersAndBackground
214	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
215	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLACK) ; .cTitle
216	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLACK) ; .cItem
217	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) ; .cHighlightedItem
218	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) \| FLG_COLOR_BLINK ; .cHurryTimeout
219	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) ; .cNormalTimeout
220	; Moon Surface
221	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cBordersAndBackground
222	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
223	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLACK) ; .cTitle
224	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLACK) ; .cItem
225	db COLOR_ATTRIBUTE(COLOR_BROWN, COLOR_BLACK) ; .cHighlightedItem
226	db COLOR_ATTRIBUTE(COLOR_BRIGHT_WHITE, COLOR_BLACK) \| FLG_COLOR_BLINK ; .cHurryTimeout
227	db COLOR_ATTRIBUTE(COLOR_WHITE, COLOR_BLACK) ; .cNormalTimeout
228	; Toxic Waste
229	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) ; .cBordersAndBackground
230	db COLOR_ATTRIBUTE(COLOR_GRAY, COLOR_BLACK) ; .cShadow
231	db COLOR_ATTRIBUTE(COLOR_LIGHT_GREEN, COLOR_BLACK) ; .cTitle
232	db COLOR_ATTRIBUTE(COLOR_LIGHT_CYAN, COLOR_BLACK) ; .cItem
233	db COLOR_ATTRIBUTE(COLOR_LIGHT_CYAN, COLOR_BLUE) ; .cHighlightedItem
234	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) \| FLG_COLOR_BLINK ; .cHurryTimeout
235	db COLOR_ATTRIBUTE(COLOR_LIGHT_RED, COLOR_BLACK) ; .cNormalTimeout
236	EndOfColorThemeTable:
237	CountOfThemes equ (EndOfColorThemeTable-ColorThemeTable) / ATTRIBUTE_CHARS_size
238
239
240	; Section containing code
241	SECTION .text
242
243	;--------------------------------------------------------------------
244	; BootMenuSettingsMenu_EnterMenuOrModifyItemVisibility
245	; Parameters:
246	; SS:BP: Menu handle
247	; Returns:
248	; Nothing
249	; Corrupts registers:
250	; All, except BP
251	;--------------------------------------------------------------------
252	ALIGN JUMP_ALIGN
253	BootMenuSettingsMenu_EnterMenuOrModifyItemVisibility:
254	push cs
255	pop ds
256	call Buffers_GetRomvarsFlagsToAX
257	call .EnableOrDisableScanForSerialDrives
258	call .EnableOrDisableDefaultBootDrive
259	call .EnableOrDisableColorThemeSelection
260	call .EnableOrDisableBootMenuSelectionTimeout
261	mov si, g_MenupageForBootMenuSettingsMenu
262	jmp Menupage_ChangeToNewMenupageInDSSI
263
264
265	;--------------------------------------------------------------------
266	; .EnableOrDisableScanForSerialDrives
267	; Parameters:
268	; AX: ROMVARS.wFlags
269	; SS:BP: Menu handle
270	; Returns:
271	; Nothing
272	; Corrupts registers:
273	; BX
274	;--------------------------------------------------------------------
275	ALIGN JUMP_ALIGN
276	.EnableOrDisableScanForSerialDrives:
277	mov bx, g_MenuitemBootMenuSerialScanDetect
278	test ax, FLG_ROMVARS_MODULE_SERIAL
279	jmp SHORT .DisableMenuitemFromCSBXifZFset
280
281
282	;--------------------------------------------------------------------
283	; .EnableOrDisableDefaultBootDrive
284	; Parameters:
285	; AX: ROMVARS.wFlags
286	; SS:BP: Menu handle
287	; Returns:
288	; Nothing
289	; Corrupts registers:
290	; BX
291	;--------------------------------------------------------------------
292	ALIGN JUMP_ALIGN
293	.EnableOrDisableDefaultBootDrive:
294	mov bx, g_MenuitemBootMnuStngsDefaultBootDrive
295	test ax, FLG_ROMVARS_MODULE_HOTKEYS \| FLG_ROMVARS_MODULE_BOOT_MENU
296	jmp SHORT .DisableMenuitemFromCSBXifZFset
297
298
299	;--------------------------------------------------------------------
300	; .EnableOrDisableColorThemeSelection
301	; Parameters:
302	; AX: ROMVARS.wFlags
303	; SS:BP: Menu handle
304	; Returns:
305	; Nothing
306	; Corrupts registers:
307	; BX
308	;--------------------------------------------------------------------
309	ALIGN JUMP_ALIGN
310	.EnableOrDisableColorThemeSelection:
311	mov bx, g_MenuitemBootMnuStngsColorTheme
312	test ax, FLG_ROMVARS_MODULE_BOOT_MENU
313	jmp SHORT .DisableMenuitemFromCSBXifZFset
314
315
316	;--------------------------------------------------------------------
317	; .EnableOrDisableBootMenuSelectionTimeout
318	; Parameters:
319	; AX: ROMVARS.wFlags
320	; SS:BP: Menu handle
321	; Returns:
322	; Nothing
323	; Corrupts registers:
324	; BX
325	;--------------------------------------------------------------------
326	ALIGN JUMP_ALIGN
327	.EnableOrDisableBootMenuSelectionTimeout:
328	mov bx, g_MenuitemBootMnuStngsSelectionTimeout
329	test ax, FLG_ROMVARS_MODULE_BOOT_MENU
330	.DisableMenuitemFromCSBXifZFset:
331	jz SHORT .DisableMenuitemFromCSBX
332	; Fall to .EnableMenuitemFromCSBX
333
334
335	;--------------------------------------------------------------------
336	; .EnableMenuitemFromCSBX
337	; .DisableMenuitemFromCSBX
338	; Parameters:
339	; CS:BX: Ptr to MENUITEM
340	; Returns:
341	; Nothing
342	; Corrupts registers:
343	; Nothing
344	;--------------------------------------------------------------------
345	ALIGN JUMP_ALIGN
346	.EnableMenuitemFromCSBX:
347	jmp EnableMenuitemFromCSBX
348
349	ALIGN JUMP_ALIGN
350	.DisableMenuitemFromCSBX:
351	jmp DisableMenuitemFromCSBX
352
353
354	;--------------------------------------------------------------------
355	; ReadColorTheme
356	; Parameters:
357	; AX: Value read from the ROMVARS location
358	; ES:DI: ROMVARS location where the value was just read from
359	; DS:SI: MENUITEM pointer
360	; Returns:
361	; AX: Value that the MENUITEM system will interact with and display
362	; Corrupts registers:
363	; BX, DI, ES
364	;--------------------------------------------------------------------
365	ALIGN JUMP_ALIGN
366	ReadColorTheme:
367	push ds
368
369	push es ; ES -> DS
370	pop ds
371	push cs ; CS -> ES
372	pop es
373
374	mov di, EndOfColorThemeTable-1 ; ES:DI now points to the end of the last theme in the table of available themes in XTIDECFG
375	xor bx, bx
376
377	push si
378	push cx
379	mov cx, CountOfThemes
380	std
381	.NextTheme:
382	push cx
383	mov cl, ATTRIBUTE_CHARS_size
384	mov si, ax ; [ROMVARS.pColorTheme] to SI
385	dec si
386	add si, cx ; DS:SI now points to the end of the ColorTheme in the loaded BIOS
387	sub di, bx ; Update the pointer to the end of the next theme in the table
388
389	; We verify that the theme in the loaded BIOS exists in our table. If it doesn't exist then that most likely means
390	; the loaded BIOS doesn't contain MODULE_BOOT_MENU and the theme actually isn't a theme - it's code. Either way,
391	; we don't trust it enough to copy it over as corrupt/invalid settings could render the UI in XTIDECFG unreadable.
392	repe cmpsb
393	mov bx, cx
394	pop cx
395	loopne .NextTheme
396	cld
397	mov ax, cx ; Return the color theme index in AX; zero (default theme) if a theme was not found
398	jne SHORT .SkipCopy
399
400	; Copy the color theme fron the loaded BIOS overwriting XTIDECFG's own theme
401	inc si
402	mov di, ColorTheme ; ES:DI now points to ColorTheme in XTIDECFG
403
404	mov cl, ATTRIBUTE_CHARS_size
405	call Memory_CopyCXbytesFromDSSItoESDI
406
407	.SkipCopy:
408	pop cx
409	pop si
410	pop ds
411	ret
412
413
414	;--------------------------------------------------------------------
415	; WriteColorTheme
416	; Parameters:
417	; AX: Value that the MENUITEM system was interacting with
418	; ES:DI: ROMVARS location where the value is to be stored
419	; DS:SI: MENUITEM pointer
420	; Returns:
421	; AX: Value to actually write to ROMVARS
422	; Corrupts registers:
423	; Nothing
424	;--------------------------------------------------------------------
425	ALIGN JUMP_ALIGN
426	WriteColorTheme:
427	push cx
428	push si
429	push di
430
431	mov cx, ATTRIBUTE_CHARS_size
432	mul cl ; Multiply with the menu choice index
433	mov si, [es:di] ; Fetch the ptr to ColorTheme
434	add ax, ColorThemeTable
435	xchg si, ax
436	mov di, ax
437
438	call Memory_CopyCXbytesFromDSSItoESDI
439
440	pop di
441	pop si
442	pop cx
443	ret
444

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source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Menupages/BootMenuSettingsMenu.asm

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