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1.1 root 1: /*
2: Hatari
3:
1.1.1.4 ! root 4: This file is distributed under the GNU Public License, version 2 or at
! 5: your option any later version. Read the file gpl.txt for details.
! 6:
! 7: Reset emulation state.
1.1 root 8: */
1.1.1.4 ! root 9: static char rcsid[] = "Hatari $Id: reset.c,v 1.4 2003/02/28 15:31:36 thothy Exp $";
1.1 root 10:
11: #include "main.h"
12: #include "cart.h"
13: #include "decode.h"
14: #include "fdc.h"
15: #include "floppy.h"
16: #include "gemdos.h"
17: #include "ikbd.h"
18: #include "int.h"
19: #include "m68000.h"
20: #include "misc.h"
21: #include "mfp.h"
22: #include "psg.h"
23: #include "reset.h"
24: #include "screen.h"
25: #include "sound.h"
26: #include "stMemory.h"
27: #include "tos.h"
28: #include "video.h"
29:
1.1.1.2 root 30:
31: /*-----------------------------------------------------------------------*/
1.1 root 32: /*
33: Cold reset ST (reset memory, all registers and reboot)
34: */
1.1.1.4 ! root 35: int Reset_Cold(void)
1.1 root 36: {
1.1.1.4 ! root 37: return Reset_ST(TRUE);
1.1 root 38: }
39:
1.1.1.2 root 40:
41: /*-----------------------------------------------------------------------*/
1.1 root 42: /*
43: Warm reset ST (reset registers, leave in same state and reboot)
44: */
1.1.1.4 ! root 45: int Reset_Warm(void)
1.1 root 46: {
1.1.1.4 ! root 47: return Reset_ST(FALSE);
1.1 root 48: }
49:
1.1.1.2 root 50:
51: /*-----------------------------------------------------------------------*/
1.1 root 52: /*
53: Reset ST emulator states, chips, interrupts and registers
54: */
1.1.1.4 ! root 55: int Reset_ST(BOOL bCold)
1.1 root 56: {
1.1.1.4 ! root 57: if (bCold)
! 58: {
! 59: int ret;
! 60:
! 61: STMemory_Clear(0x00000000, 0x00400000); /* Clear First 4Mb */
! 62: STMemory_Clear(0x00e00000, 0x00ffffff); /* Clear Upper memory */
! 63: STMemory_WriteLong(4, 0x00fc0000); /* Set reset vector */
! 64: STMemory_WriteLong(0, 0x0000f000); /* And reset stack pointer */
1.1.1.2 root 65:
66: Floppy_GetBootDrive(); /* Find which device to boot from(A: or C:) */
67: Cart_LoadImage(); /* Load program into cartridge memory. Used for gemdos loading */
1.1.1.4 ! root 68:
! 69: ret = TOS_LoadImage(); /* Load TOS, writes into cartridge memory */
! 70: if(ret)
! 71: {
! 72: return ret; /* If we can not load a TOS image, return now! */
! 73: }
1.1 root 74: }
1.1.1.2 root 75: Int_Reset(); /* Reset interrupts */
76: MFP_Reset(); /* Setup MFP chip */
77: Video_Reset(); /* Reset video */
1.1.1.4 ! root 78:
! 79: if (bCold)
! 80: {
! 81: GemDOS_Reset(); /* Reset GEMDOS emulation */
1.1.1.2 root 82: FDC_Reset(); /* Reset FDC */
1.1 root 83: }
1.1.1.4 ! root 84:
1.1.1.2 root 85: PSG_Reset(); /* Reset PSG */
86: Sound_Reset(); /* Reset Sound */
87: IKBD_Reset(bCold); /* Keyboard */
88: Screen_Reset(); /* Reset screen */
89: M68000_Reset(bCold); /* Reset CPU */
1.1 root 90:
1.1.1.2 root 91: /* And VBL interrupt, MUST always be one interrupt ready to trigger */
1.1.1.4 ! root 92: Int_AddAbsoluteInterrupt(CYCLES_ENDLINE, INTERRUPT_VIDEO_ENDLINE);
! 93: Int_AddAbsoluteInterrupt(CYCLES_HBL, INTERRUPT_VIDEO_HBL);
! 94: Int_AddAbsoluteInterrupt(CYCLES_PER_FRAME, INTERRUPT_VIDEO_VBL);
1.1.1.2 root 95: /* And keyboard check for debugger */
1.1 root 96: #ifdef USE_DEBUGGER
1.1.1.4 ! root 97: Int_AddAbsoluteInterrupt(CYCLES_DEBUGGER, INTERRUPT_DEBUGGER);
1.1 root 98: #endif
1.1.1.4 ! root 99:
! 100: return 0;
1.1 root 101: }
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