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Diffstat (limited to 'src/memmenu.c')
| -rw-r--r-- | src/memmenu.c | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/src/memmenu.c b/src/memmenu.c new file mode 100644 index 0000000..2badf65 --- /dev/null +++ b/src/memmenu.c @@ -0,0 +1,329 @@ +/* + + espec - Sinclair Spectrum emulator + + Copyright (C) 2003 Ian Cowburn (ianc@noddybox.demon.co.uk) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + ------------------------------------------------------------------------- + + Provides a common error exit point + +*/ +static const char ident[]="$Id$"; + +#include <stdlib.h> +#include <string.h> + +#include "memmenu.h" +#include "spec.h" +#include "gfx.h" +#include "gui.h" + +#include <SDL.h> + +static const char ident_h[]=ESPEC_MEMMENU_H; + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +#define WHITE GFXRGB(255,255,255) +#define BLACK GFXRGB(0,0,0) +#define RED GFXRGB(255,100,100) +#define GREEN GFXRGB(100,255,100) +#define BLUE GFXRGB(100,100,255) + +#define MENU + + +/* ---------------------------------------- PRIVATE FUNCTIONS +*/ +static void Centre(const char *p, int y, Uint32 col) +{ + GFXPrint((320-strlen(p)*8)/2,y,col,"%s",p); +} + + +static void DisplayMenu(void) +{ + static const char *menu[]= + { + "1. Disassemble/Hex dump", + "2. Return ", + NULL + }; + + int f; + + GFXClear(BLACK); + + Centre("MEMORY MENU",0,WHITE); + Centre("Select an option",8,WHITE); + + f=0; + + while(menu[f]) + { + Centre(menu[f],20+f*10,WHITE); + f++; + } +} + + +static const char *FlagString(Z80Byte flag) +{ + static char s[]="76543210"; + static char c[]="SZ5H3PNC"; + int f; + + for(f=0;f<8;f++) + if (flag&(1<<(7-f))) + s[f]=c[f]; + else + s[f]='-'; + + return s; +} + + +static int EnterAddress(Z80Word *w) +{ + unsigned long ul; + const char *p; + + p=GUIInputString("Address?",""); + + if (*p) + { + ul=strtoul(p,NULL,0); + + if (ul>0xffff) + { + GUIMessage("ERROR","Bad address"); + } + else + { + *w=(Z80Word)ul; + return TRUE; + } + } + + return FALSE; +} + + +static void DoDisassem(Z80 *z80, const Z80State *s) +{ + static int hexmode=FALSE; + Z80Word pc=s->PC; + int quit=FALSE; + + while(!quit) + { + SDL_Event *e; + Z80Word curr; + Z80Word next; + int f; + + GFXClear(BLACK); + + Centre("Press F1 for help",0,RED); + + curr=pc; + + for(f=0;f<21;f++) + { + char s[80]; + char *p; + int y; + + y=16+f*8; + + GFXPrint(0,y,GREEN,"%4.4x",curr); + + if (hexmode) + { + int n; + + for(n=0;n<8;n++) + { + GFXPrint(40+n*24,y,WHITE,"%2.2x", + (int)SPECReadForDisassem(z80,curr)); + + curr++; + } + } + else + { + strcpy(s,Z80Disassemble(z80,&curr)); + + p=strtok(s,";"); + GFXPrint(40,y,WHITE,"%s",p); + } + + if (f==0) + next=curr; + } + + GFXEndFrame(FALSE); + + e=GFXWaitKey(); + + switch(e->key.keysym.sym) + { + case SDLK_F1: + GUIMessage + ("DISASSEMBLY HELP","%s", + "ESC - Exit\n" + "H - Switch between disassembly/hex\n" + "Enter - Enter address to display\n" + "Cursor Up - Prev op\n" + "Cursor Down - Next op\n" + "Page Up - Move back a page\n" + "Page Down - Move forward a page\n" + "Cursor Left - Move PC by -1024\n" + "Cursor Right - Move PC by 1024"); + break; + + case SDLK_ESCAPE: + quit=TRUE; + break; + + case SDLK_h: + hexmode=!hexmode; + break; + + case SDLK_RETURN: + case SDLK_KP_ENTER: + EnterAddress(&pc); + break; + + case SDLK_UP: + if (hexmode) + pc-=8; + else + pc--; + break; + + case SDLK_DOWN: + pc=next; + break; + + case SDLK_PAGEUP: + if (hexmode) + pc-=21*8; + else + pc-=21; + break; + + case SDLK_PAGEDOWN: + pc=curr; + break; + + case SDLK_LEFT: + pc-=1024; + break; + + case SDLK_RIGHT: + pc+=1024; + break; + + default: + break; + } + } +} + + +/* ---------------------------------------- EXPORTED INTERFACES +*/ +void MemoryMenu(Z80 *z80) +{ + SDL_Event *e; + int quit=FALSE; + Z80State s; + + Z80GetState(z80,&s); + + GFXKeyRepeat(TRUE); + + while(!quit) + { + DisplayMenu(); + DisplayState(z80); + GFXEndFrame(FALSE); + + e=GFXWaitKey(); + + switch(e->key.keysym.sym) + { + case SDLK_1: + DoDisassem(z80,&s); + break; + + case SDLK_ESCAPE: + case SDLK_2: + quit=TRUE; + break; + + default: + break; + } + } + + GFXKeyRepeat(FALSE); +} + + +void DisplayState(Z80 *z80) +{ + Z80State s; + int y; + + Z80GetState(z80,&s); + + y=136; + + GFXPrintPaper(0,y,RED,BLACK,"PC=%4.4x A=%2.2x F=%s", + s.PC,s.AF>>8,FlagString(s.AF&0xff)); + y+=8; + + GFXPrintPaper(0,y,RED,BLACK,"BC=%4.4x DE=%4.4x HL=%4.4x",s.BC,s.DE,s.HL); + y+=8; + + GFXPrintPaper(0,y,RED,BLACK,"IX=%4.4x IY=%4.4x SP=%4.4x",s.IX,s.IY,s.SP); + y+=8; + + GFXPrintPaper(0,y,RED,BLACK,"I=%2.2x IM=%2.2x R=%2.2x",s.I,s.IM,s.R); + y+=8; + + GFXPrintPaper(0,y,RED,BLACK,"IFF1=%2.2x IFF2=%2.2x",s.IFF1,s.IFF2); + y+=8; + + y+=8; + GFXPrintPaper(0,y,RED,BLACK,"%s\n",SPECInfo(z80)); + y+=8; +} + + + + +/* END OF FILE */ |