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reactos/subsystems/ntvdm/bios/bios.c

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[NTVDM] Start of an implementation of a software DOS emulator. Brought to you by Aleksandar Andrejevic. Good luck ;) Remove the old language files. They will be recreated when the time comes. svn path=/branches/ntvdm/; revision=59249
2013-06-17 00:00:36 +00:00
/*
* COPYRIGHT: GPL - See COPYING in the top level directory
* PROJECT: ReactOS Virtual DOS Machine
* FILE: bios.c
[NTVDM] - Remove an unneeded assignment (cmos.c) - Reorganize BIOS code: put our 32-bit bios in a dedicated directory; start to introduce a way to load other bioses (WIP). svn path=/branches/ntvdm/; revision=62235
2014-02-17 22:20:03 +00:00
* PURPOSE: VDM BIOS Support Library
* PROGRAMMERS: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
[NTVDM] Start of an implementation of a software DOS emulator. Brought to you by Aleksandar Andrejevic. Good luck ;) Remove the old language files. They will be recreated when the time comes. svn path=/branches/ntvdm/; revision=59249
2013-06-17 00:00:36 +00:00
*/
[NTVDM] Clean up the code and properly separate different modules into different files. svn path=/branches/ntvdm/; revision=59344
2013-06-26 22:58:41 +00:00
/* INCLUDES *******************************************************************/
[NTVDM] Start of an implementation of a software DOS emulator. Brought to you by Aleksandar Andrejevic. Good luck ;) Remove the old language files. They will be recreated when the time comes. svn path=/branches/ntvdm/; revision=59249
2013-06-17 00:00:36 +00:00
[NTVDM] Add debug output. svn path=/branches/ntvdm/; revision=59555
2013-07-22 13:51:26 +00:00
#define NDEBUG
[NTVDM] Start my work on modularizing registration of "32-bit" interrupts, i.e. interrupts that are implemented in 32-bit mode, but are stubbed with 16-bit code (so that 16-bit apps can call them). The 16-bit stub code uses a BOP call to our Control BOP function (BOP 0xFF) which can handle in theory many sub-functions (as the BOP 0x58 documented here: http://www.ragestorm.net/tutorial?id=27) specified as an additional BYTE in the call: 0xC4 0xC4 bop_code <optional_bop_subfunction> Here, for calling 32-bit interrupts we use our BOP 0xFF, subfunction 0xFF. The final aim would be to generate the 16-bit stub code when one calls the RegisterInt32 helper function (contrary to what's happening now, that is, the 16-bit stub code is generated for all of the interrupts at BIOS initialization time, and we use it for BIOS and DOS interrupts). svn path=/branches/ntvdm/; revision=60907
2013-11-09 22:15:40 +00:00
#include "bios.h"
[NTVDM] Finish my Interruption revamp. - Move interrupt-related code from bop.c to int32.c - Introduce InitializeInt32 helper so that one can initialize all the needed 16-bit stubs for the 32-bit interrupts. - Remove unneeded defines in emulator.h and an exported variable in ntvdm.h. svn path=/branches/ntvdm/; revision=60908
2013-11-09 23:01:11 +00:00
[NTVDM] Clean up the code and properly separate different modules into different files. svn path=/branches/ntvdm/; revision=59344
2013-06-26 22:58:41 +00:00
/* PRIVATE VARIABLES **********************************************************/
[NTVDM] - Remove an unneeded assignment (cmos.c) - Reorganize BIOS code: put our 32-bit bios in a dedicated directory; start to introduce a way to load other bioses (WIP). svn path=/branches/ntvdm/; revision=62235
2014-02-17 22:20:03 +00:00
static BOOLEAN Bios32Loaded = FALSE;
[NTVDM] Implement the Bios Data Area (BDA). Fix keyboard character translation bug. svn path=/branches/ntvdm/; revision=59489
2013-07-15 01:37:38 +00:00
[NTVDM] Implement Video Graphics Array (VGA) support. Replace the old BIOS video code with new code that uses the VGA. svn path=/branches/ntvdm/; revision=59648
2013-08-05 23:20:25 +00:00
/* PRIVATE FUNCTIONS **********************************************************/
[NTVDM] Clean up the code and properly separate different modules into different files. svn path=/branches/ntvdm/; revision=59344
2013-06-26 22:58:41 +00:00
[NTVDM] - Move all the hardware initialization to EmulatorInitialize (since emulator.c can be viewed as support functions for emulating a PC motherboard) --> PS2 and VGA go there. - Break bios.c into bios.c and kbdbios.c (the keyboard bios module) (according to the IBM documentation as well as other emulator sources or SeaBIOS or...). - Move Exception handling from int32.c to emulator.c, because it's something tight to the emulator, not to the interrupt system by itself (yet it happens that INT 00h to 07h are commonly set to some exception handlers). In the bios.c, initialize those vectors with the default exception handler. - Handling IRQs is done fully in bios.c now: introduce PicSetIRQMask and EnableHwIRQ helper functions (adapted from their equivalents from SeaBIOS) that allows the bios to set (and activate in the PIC) a given IRQ with its corresponding handler. Also introduce PicIRQComplete that serves as a PIC IRQ completer (i.e. sends the EOI to the right PIC(s)). - Continuing on that, at the moment I set dumb default PIC IRQ handlers for IRQ 08h - 0Fh and IRQ 70h - 77h). - By default I disable all the IRQs; there are then set on-demand with EnableHwIRQ. - Rework the POST (aka. BiosInitialize function): * the memory size is now get from the CMOS (as well as the extended memory size via INT 12h, AH=88h), * then we initialize the interrupts, * then platform hardware (ie. the chips) are initialized, * and finally the keyboard and video bioses. - As said before, move memory sizes into the CMOS. - Simplify video bios initialization. svn path=/branches/ntvdm/; revision=61796
2014-01-25 00:21:51 +00:00
/* PUBLIC FUNCTIONS ***********************************************************/
[NTVDM] Improve vertical refresh performance. Properly synchronize access to the framebuffer. svn path=/branches/ntvdm/; revision=59425
2013-07-05 01:31:50 +00:00
[NTVDM] - Remove an unneeded assignment (cmos.c) - Reorganize BIOS code: put our 32-bit bios in a dedicated directory; start to introduce a way to load other bioses (WIP). svn path=/branches/ntvdm/; revision=62235
2014-02-17 22:20:03 +00:00
BOOLEAN BiosInitialize(IN LPCWSTR BiosFileName,
IN HANDLE ConsoleInput,
IN HANDLE ConsoleOutput)
[NTVDM] Implement Programmable Interval Timer (PIT) emulation. Fix bugs in interrupts and PIC emulation. svn path=/branches/ntvdm/; revision=59271
2013-06-21 00:47:07 +00:00
{
[NTVDM] - Remove an unneeded assignment (cmos.c) - Reorganize BIOS code: put our 32-bit bios in a dedicated directory; start to introduce a way to load other bioses (WIP). svn path=/branches/ntvdm/; revision=62235
2014-02-17 22:20:03 +00:00
Bios32Loaded = Bios32Initialize(ConsoleInput, ConsoleOutput);
return Bios32Loaded;
[NTVDM] - Move all the hardware initialization to EmulatorInitialize (since emulator.c can be viewed as support functions for emulating a PC motherboard) --> PS2 and VGA go there. - Break bios.c into bios.c and kbdbios.c (the keyboard bios module) (according to the IBM documentation as well as other emulator sources or SeaBIOS or...). - Move Exception handling from int32.c to emulator.c, because it's something tight to the emulator, not to the interrupt system by itself (yet it happens that INT 00h to 07h are commonly set to some exception handlers). In the bios.c, initialize those vectors with the default exception handler. - Handling IRQs is done fully in bios.c now: introduce PicSetIRQMask and EnableHwIRQ helper functions (adapted from their equivalents from SeaBIOS) that allows the bios to set (and activate in the PIC) a given IRQ with its corresponding handler. Also introduce PicIRQComplete that serves as a PIC IRQ completer (i.e. sends the EOI to the right PIC(s)). - Continuing on that, at the moment I set dumb default PIC IRQ handlers for IRQ 08h - 0Fh and IRQ 70h - 77h). - By default I disable all the IRQs; there are then set on-demand with EnableHwIRQ. - Rework the POST (aka. BiosInitialize function): * the memory size is now get from the CMOS (as well as the extended memory size via INT 12h, AH=88h), * then we initialize the interrupts, * then platform hardware (ie. the chips) are initialized, * and finally the keyboard and video bioses. - As said before, move memory sizes into the CMOS. - Simplify video bios initialization. svn path=/branches/ntvdm/; revision=61796
2014-01-25 00:21:51 +00:00
}
VOID BiosCleanup(VOID)
{
[NTVDM] - Remove an unneeded assignment (cmos.c) - Reorganize BIOS code: put our 32-bit bios in a dedicated directory; start to introduce a way to load other bioses (WIP). svn path=/branches/ntvdm/; revision=62235
2014-02-17 22:20:03 +00:00
if (Bios32Loaded) Bios32Cleanup();
[NTVDM] Implement Programmable Interval Timer (PIT) emulation. Fix bugs in interrupts and PIC emulation. svn path=/branches/ntvdm/; revision=59271
2013-06-21 00:47:07 +00:00
}
[NTVDM] Start of an implementation of a software DOS emulator. Brought to you by Aleksandar Andrejevic. Good luck ;) Remove the old language files. They will be recreated when the time comes. svn path=/branches/ntvdm/; revision=59249
2013-06-17 00:00:36 +00:00
/* EOF */
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