new configuration system. Runtime changing of settings possible.
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2162
This commit is contained in:
Peter Veenstra
parent
da9013442a
commit
d2b7bc58a6
3 changed files with 260 additions and 164 deletions
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@ -16,24 +16,26 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: bios.cpp,v 1.40 2005-02-24 17:50:58 qbix79 Exp $ */
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/* $Id: bios.cpp,v 1.41 2005-03-25 11:59:24 qbix79 Exp $ */
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#include <time.h>
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#include "dosbox.h"
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#include "mem.h"
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#include "bios.h"
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#include "regs.h"
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#include "cpu.h"
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#include "callback.h"
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#include "inout.h"
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#include "mem.h"
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#include "pic.h"
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#include "joystick.h"
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#include "dos_inc.h"
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#include "mouse.h"
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#include "setup.h"
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static Bitu call_int1a,call_int11,call_int8,call_int17,call_int12,call_int15,call_int1c;
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static Bitu call_int1,call_int70,call_int14;
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/* if mem_systems 0 then size_extended is reported as the real size else
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* zero is reported. ems and xms can increase or decrease the other_memsystems
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* counter using the BIOS_ZeroExtendedSize call */
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static Bit16u size_extended;
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static Bits other_memsystems=0;
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static Bitu INT70_Handler(void) {
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/* Acknowledge irq with cmos */
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@ -311,7 +313,7 @@ static Bitu INT15_Handler(void) {
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break;
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}
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case 0x88: /* SYSTEM - GET EXTENDED MEMORY SIZE (286+) */
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reg_ax=size_extended;
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reg_ax=other_memsystems?0:size_extended;
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LOG(LOG_BIOS,LOG_NORMAL)("INT15:Function 0x88 Remaining %04X kb",reg_ax);
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CALLBACK_SCF(false);
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break;
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@ -414,108 +416,132 @@ static Bitu INT1_Single_Step(void) {
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return CBRET_NONE;
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}
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void BIOS_ZeroExtendedSize(void) {
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size_extended=0;
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void BIOS_ZeroExtendedSize(bool in) {
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if(in) other_memsystems++;
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else other_memsystems--;
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if(other_memsystems < 0) other_memsystems=0;
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}
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void BIOS_SetupKeyboard(void);
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void BIOS_SetupDisks(void);
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void BIOS_Init(Section* sec) {
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MSG_Add("BIOS_CONFIGFILE_HELP","Nothing to setup yet!\n");
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/* Clear the Bios Data Area */
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for (Bit16u i=0;i<1024;i++) real_writeb(0x40,i,0);
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/* Setup all the interrupt handlers the bios controls */
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/* INT 8 Clock IRQ Handler */
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//TODO Maybe give this a special callback that will also call int 8 instead of starting
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//a new system
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call_int8=CALLBACK_Allocate();
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CALLBACK_Setup(call_int8,&INT8_Handler,CB_IRET,"Int 8 Clock");
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phys_writeb(CB_BASE+(call_int8<<4)+0,(Bit8u)0xFE); //GRP 4
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phys_writeb(CB_BASE+(call_int8<<4)+1,(Bit8u)0x38); //Extra Callback instruction
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phys_writew(CB_BASE+(call_int8<<4)+2,call_int8); //The immediate word
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phys_writeb(CB_BASE+(call_int8<<4)+4,(Bit8u)0x50); // push ax
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phys_writeb(CB_BASE+(call_int8<<4)+5,(Bit8u)0xb0); // mov al, 0x20
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phys_writeb(CB_BASE+(call_int8<<4)+6,(Bit8u)0x20);
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phys_writeb(CB_BASE+(call_int8<<4)+7,(Bit8u)0xe6); // out 0x20, al
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phys_writeb(CB_BASE+(call_int8<<4)+8,(Bit8u)0x20);
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phys_writeb(CB_BASE+(call_int8<<4)+9,(Bit8u)0x58); // pop ax
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phys_writeb(CB_BASE+(call_int8<<4)+10,(Bit8u)0xcf); // iret
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class BIOS:public Module_base{
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private:
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CALLBACK_HandlerObject callback[10];
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public:
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BIOS(Section* configuration):Module_base(configuration){
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MSG_Add("BIOS_CONFIGFILE_HELP","Nothing to setup yet!\n");
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/* Clear the Bios Data Area */
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for (Bit16u i=0;i<1024;i++) real_writeb(0x40,i,0);
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/* Setup all the interrupt handlers the bios controls */
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/* INT 8 Clock IRQ Handler */
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//TODO Maybe give this a special callback that will also call int 8 instead of starting
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//a new system
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callback[0].Install(INT8_Handler,CB_IRET,"Int 8 Clock");
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callback[0].Set_RealVec(0x8);
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Bit16u call_int8=callback[0].Get_callback();
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phys_writeb(CB_BASE+(call_int8<<4)+0,(Bit8u)0xFE); //GRP 4
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phys_writeb(CB_BASE+(call_int8<<4)+1,(Bit8u)0x38); //Extra Callback instruction
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phys_writew(CB_BASE+(call_int8<<4)+2,call_int8); //The immediate word
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phys_writeb(CB_BASE+(call_int8<<4)+4,(Bit8u)0x50); // push ax
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phys_writeb(CB_BASE+(call_int8<<4)+5,(Bit8u)0xb0); // mov al, 0x20
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phys_writeb(CB_BASE+(call_int8<<4)+6,(Bit8u)0x20);
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phys_writeb(CB_BASE+(call_int8<<4)+7,(Bit8u)0xe6); // out 0x20, al
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phys_writeb(CB_BASE+(call_int8<<4)+8,(Bit8u)0x20);
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phys_writeb(CB_BASE+(call_int8<<4)+9,(Bit8u)0x58); // pop ax
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phys_writeb(CB_BASE+(call_int8<<4)+10,(Bit8u)0xcf); // iret
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mem_writed(BIOS_TIMER,0); //Calculate the correct time
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RealSetVec(0x8,CALLBACK_RealPointer(call_int8));
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/* INT 11 Get equipment list */
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call_int11=CALLBACK_Allocate();
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CALLBACK_Setup(call_int11,&INT11_Handler,CB_IRET,"Int 11 Equipment");
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RealSetVec(0x11,CALLBACK_RealPointer(call_int11));
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/* INT 12 Memory Size default at 640 kb */
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call_int12=CALLBACK_Allocate();
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CALLBACK_Setup(call_int12,&INT12_Handler,CB_IRET,"Int 12 Memory");
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RealSetVec(0x12,CALLBACK_RealPointer(call_int12));
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mem_writew(BIOS_MEMORY_SIZE,640);
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/* INT 13 Bios Disk Support */
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BIOS_SetupDisks();
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call_int14=CALLBACK_Allocate();
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CALLBACK_Setup(call_int14,&INT14_Handler,CB_IRET,"Int 14 COM-port");
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RealSetVec(0x14,CALLBACK_RealPointer(call_int14));
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/* INT 15 Misc Calls */
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call_int15=CALLBACK_Allocate();
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CALLBACK_Setup(call_int15,&INT15_Handler,CB_IRET,"Int 15 Bios");
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RealSetVec(0x15,CALLBACK_RealPointer(call_int15));
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/* INT 16 Keyboard handled in another file */
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BIOS_SetupKeyboard();
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/* INT 16 Printer Routines */
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call_int17=CALLBACK_Allocate();
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CALLBACK_Setup(call_int17,&INT17_Handler,CB_IRET,"Int 17 Printer");
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RealSetVec(0x17,CALLBACK_RealPointer(call_int17));
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/* INT 1A TIME and some other functions */
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call_int1a=CALLBACK_Allocate();
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CALLBACK_Setup(call_int1a,&INT1A_Handler,CB_IRET_STI,"Int 1a Time");
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RealSetVec(0x1A,CALLBACK_RealPointer(call_int1a));
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/* INT 1C System Timer tick called from INT 8 */
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call_int1c=CALLBACK_Allocate();
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CALLBACK_Setup(call_int1c,&INT1C_Handler,CB_IRET,"Int 1c Timer tick");
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RealSetVec(0x1C,CALLBACK_RealPointer(call_int1c));
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/* IRQ 8 RTC Handler */
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call_int70=CALLBACK_Allocate();
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CALLBACK_Setup(call_int70,&INT70_Handler,CB_IRET,"Int 70 RTC");
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RealSetVec(0x70,CALLBACK_RealPointer(call_int70));
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mem_writed(BIOS_TIMER,0); //Calculate the correct time
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/* Some defeault CPU error interrupt handlers */
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call_int1=CALLBACK_Allocate();
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CALLBACK_Setup(call_int1,&INT1_Single_Step,CB_IRET,"Int 1 Single step");
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RealSetVec(0x1,CALLBACK_RealPointer(call_int1));
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/* INT 11 Get equipment list */
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callback[1].Install(&INT11_Handler,CB_IRET,"Int 11 Equipment");
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callback[1].Set_RealVec(0x11);
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/* Setup some stuff in 0x40 bios segment */
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/* Test for parallel port */
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if (IO_Read(0x378)!=0xff) real_writew(0x40,0x08,0x378);
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/* Test for serial port */
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Bitu index=0;
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if (IO_Read(0x3fa)!=0xff) real_writew(0x40,(index++)*2,0x3f8);
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if (IO_Read(0x2fa)!=0xff) real_writew(0x40,(index++)*2,0x2f8);
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/* Setup equipment list */
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Bitu config=0x4400; //1 Floppy, 2 serial and 1 parrallel
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/* INT 12 Memory Size default at 640 kb */
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callback[2].Install(&INT12_Handler,CB_IRET,"Int 12 Memory");
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callback[2].Set_RealVec(0x12);
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mem_writew(BIOS_MEMORY_SIZE,640);
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/* INT 13 Bios Disk Support */
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BIOS_SetupDisks();
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callback[3].Install(&INT14_Handler,CB_IRET,"Int 14 COM-port");
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callback[3].Set_RealVec(0x14);
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/* INT 15 Misc Calls */
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callback[4].Install(&INT15_Handler,CB_IRET,"Int 15 Bios");
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callback[4].Set_RealVec(0x15);
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/* INT 16 Keyboard handled in another file */
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BIOS_SetupKeyboard();
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/* INT 17 Printer Routines */
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callback[5].Install(&INT17_Handler,CB_IRET,"Int 17 Printer");
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callback[5].Set_RealVec(0x17);
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/* INT 1A TIME and some other functions */
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callback[6].Install(&INT1A_Handler,CB_IRET_STI,"Int 1a Time");
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callback[6].Set_RealVec(0x1A);
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/* INT 1C System Timer tick called from INT 8 */
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callback[7].Install(&INT1C_Handler,CB_IRET,"Int 1c Timer tick");
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callback[7].Set_RealVec(0x1C);
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/* IRQ 8 RTC Handler */
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callback[8].Install(&INT70_Handler,CB_IRET,"Int 70 RTC");
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callback[8].Set_RealVec(0x70);
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/* Some defeault CPU error interrupt handlers */
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callback[9].Install(&INT1_Single_Step,CB_IRET,"Int 1 Single step");
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callback[9].Set_RealVec(0x1);
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/* Setup some stuff in 0x40 bios segment */
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/* Test for parallel port */
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if (IO_Read(0x378)!=0xff) real_writew(0x40,0x08,0x378);
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/* Test for serial port */
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Bitu index=0;
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if (IO_Read(0x3fa)!=0xff) real_writew(0x40,(index++)*2,0x3f8);
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if (IO_Read(0x2fa)!=0xff) real_writew(0x40,(index++)*2,0x2f8);
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/* Setup equipment list */
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//1 Floppy, 2 serial and 1 parrallel
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Bitu config=0x4400;
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#if (C_FPU)
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config|=0x2; //FPU
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//FPU
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config|=0x2;
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#endif
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switch (machine) {
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case MCH_HERC:
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config|=0x30; //Startup monochrome
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break;
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case MCH_CGA: case MCH_TANDY:
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config|=0x20; //Startup 80x25 color
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break;
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default:
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config|=0; //EGA VGA
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break;
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switch (machine) {
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case MCH_HERC:
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//Startup monochrome
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config|=0x30;
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break;
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case MCH_CGA:
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case MCH_TANDY:
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//Startup 80x25 color
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config|=0x20;
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break;
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default:
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//EGA VGA
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config|=0;
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break;
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}
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// PS2 mouse
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config |= 0x04;
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mem_writew(BIOS_CONFIGURATION,config);
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/* Setup extended memory size */
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IO_Write(0x70,0x30);
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size_extended=IO_Read(0x71);
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IO_Write(0x70,0x31);
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size_extended|=(IO_Read(0x71) << 8);
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}
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config |= 0x04; // PS2 mouse
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mem_writew(BIOS_CONFIGURATION,config);
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/* Setup extended memory size */
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IO_Write(0x70,0x30);
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size_extended=IO_Read(0x71);
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IO_Write(0x70,0x31);
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size_extended|=(IO_Read(0x71) << 8);
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};
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static BIOS* test;
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void BIOS_Destroy(Section* sec){
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delete test;
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}
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void BIOS_Init(Section* sec) {
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test = new BIOS(sec);
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sec->AddDestroyFunction(&BIOS_Destroy,false);
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}
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