| /* |
| * Interrupt vectors emulation |
| * |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include "windows.h" |
| #include "drive.h" |
| #include "miscemu.h" |
| #include "msdos.h" |
| #include "module.h" |
| #include "registers.h" |
| #include "stackframe.h" |
| #include "stddebug.h" |
| #include "debug.h" |
| |
| static SEGPTR INT_Vectors[256]; |
| |
| /* Ordinal number for interrupt 0 handler in WINPROCS.DLL */ |
| #define FIRST_INTERRUPT_ORDINAL 100 |
| |
| |
| /********************************************************************** |
| * INT_Init |
| */ |
| BOOL INT_Init(void) |
| { |
| WORD vector; |
| HMODULE hModule = GetModuleHandle( "WINPROCS" ); |
| |
| for (vector = 0; vector < 256; vector++) |
| { |
| if (!(INT_Vectors[vector] = MODULE_GetEntryPoint( hModule, |
| FIRST_INTERRUPT_ORDINAL+vector ))) |
| { |
| fprintf(stderr,"Internal error: no vector for int %02x\n",vector); |
| return FALSE; |
| } |
| } |
| return TRUE; |
| } |
| |
| |
| /********************************************************************** |
| * INT_GetHandler |
| * |
| * Return the interrupt vector for a given interrupt. |
| */ |
| SEGPTR INT_GetHandler( BYTE intnum ) |
| { |
| return INT_Vectors[intnum]; |
| } |
| |
| |
| /********************************************************************** |
| * INT_SetHandler |
| * |
| * Set the interrupt handler for a given interrupt. |
| */ |
| void INT_SetHandler( BYTE intnum, SEGPTR handler ) |
| { |
| dprintf_int( stddeb, "Set interrupt vector %02x <- %04x:%04x\n", |
| intnum, HIWORD(handler), LOWORD(handler) ); |
| INT_Vectors[intnum] = handler; |
| } |
| |
| |
| /********************************************************************** |
| * INT_DummyHandler |
| */ |
| void INT_DummyHandler( struct sigcontext_struct context ) |
| { |
| INT_BARF( &context, |
| CURRENT_STACK16->ordinal_number - FIRST_INTERRUPT_ORDINAL ); |
| } |
| |
| |
| /********************************************************************** |
| * INT_Int11Handler |
| * |
| * Handler for int 11h (get equipment list). |
| */ |
| void INT_Int11Handler( struct sigcontext_struct context ) |
| { |
| int diskdrives = 0; |
| int parallelports = 0; |
| int serialports = 0; |
| int x; |
| |
| /* borrowed from Ralph Brown's interrupt lists |
| |
| bits 15-14: number of parallel devices |
| bit 13: [Conv] Internal modem |
| bit 12: reserved |
| bits 11- 9: number of serial devices |
| bit 8: reserved |
| bits 7- 6: number of diskette drives minus one |
| bits 5- 4: Initial video mode: |
| 00b = EGA,VGA,PGA |
| 01b = 40 x 25 color |
| 10b = 80 x 25 color |
| 11b = 80 x 25 mono |
| bit 3: reserved |
| bit 2: [PS] =1 if pointing device |
| [non-PS] reserved |
| bit 1: =1 if math co-processor |
| bit 0: =1 if diskette available for boot |
| */ |
| /* Currently the only of these bits correctly set are: |
| bits 15-14 } Added by William Owen Smith, |
| bits 11-9 } wos@dcs.warwick.ac.uk |
| bits 7-6 |
| bit 2 (always set) |
| */ |
| |
| if (DRIVE_IsValid(0)) diskdrives++; |
| if (DRIVE_IsValid(1)) diskdrives++; |
| if (diskdrives) diskdrives--; |
| |
| for (x=0; x!=MAX_PORTS; x++) |
| { |
| if (COM[x].devicename) |
| serialports++; |
| if (LPT[x].devicename) |
| parallelports++; |
| } |
| if (serialports > 7) /* 3 bits -- maximum value = 7 */ |
| serialports=7; |
| if (parallelports > 3) /* 2 bits -- maximum value = 3 */ |
| parallelports=3; |
| |
| AX_reg(&context) = (diskdrives << 6) | (serialports << 9) | |
| (parallelports << 14) | 0x02; |
| } |
| |
| |
| /********************************************************************** |
| * INT_Int12Handler |
| * |
| * Handler for int 12h (get memory size). |
| */ |
| void INT_Int12Handler( struct sigcontext_struct context ) |
| { |
| AX_reg(&context) = 640; |
| } |
| |
| |
| /********************************************************************** |
| * INT_Int15Handler |
| * |
| * Handler for int 15h. |
| */ |
| void INT_Int15Handler( struct sigcontext_struct context ) |
| { |
| INT_BARF( &context, 0x15 ); |
| } |
| |
| |
| /********************************************************************** |
| * INT_Int16Handler |
| * |
| * Handler for int 16h (keyboard). |
| */ |
| void INT_Int16Handler( struct sigcontext_struct context ) |
| { |
| INT_BARF( &context, 0x16 ); |
| } |