Return to hatari-glue.c CVS log

Up to [Previous NeXT emulator] / previous / src / uae-cpu

Annotation of previous/src/uae-cpu/hatari-glue.c, revision 1.1.1.2

1.1       root        1: /*
                      2:   Hatari - hatari-glue.c
                      3: 
                      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:   This file contains some code to glue the UAE CPU core to the rest of the
                      8:   emulator and Hatari's "illegal" opcodes.
                      9: */
                     10: const char HatariGlue_fileid[] = "Hatari hatari-glue.c : " __DATE__ " " __TIME__;
                     11: 
                     12: 
                     13: #include <stdio.h>
                     14: 
                     15: #include "main.h"
                     16: #include "configuration.h"
                     17: #include "cycInt.h"
                     18: #include "cart.h"
                     19: #include "nextMemory.h"
1.1.1.2 ! root       20: #include "screen.h"
1.1       root       21: #include "video.h"
                     22: 
                     23: #include "sysdeps.h"
                     24: #include "maccess.h"
                     25: #include "memory.h"
                     26: #include "newcpu.h"
                     27: #include "hatari-glue.h"
                     28: 
                     29: 
                     30: struct uae_prefs currprefs, changed_prefs;
                     31: 
                     32: int pendingInterrupts = 0;
                     33: 
                     34: 
                     35: /**
                     36:  * Reset custom chips
                     37:  */
                     38: void customreset(void)
                     39: {
                     40:        pendingInterrupts = 0;
                     41: 
                     42:        /* Reseting the GLUE video chip should also set freq/res register to 0 */
                     43:        Video_Reset_Glue ();
                     44: }
                     45: 
                     46: 
                     47: /**
                     48:  * Return interrupt number (1 - 7), -1 means no interrupt.
                     49:  * Note that the interrupt stays pending if it can't be executed yet
                     50:  * due to the interrupt level field in the SR.
                     51:  */
                     52: int intlev(void)
                     53: {
                     54:        /* There are only VBL and HBL autovector interrupts in the ST... */
                     55:        assert((pendingInterrupts & ~((1<<4)|(1<<2))) == 0);
                     56: 
                     57:        if (pendingInterrupts & (1 << 4))         /* VBL interrupt? */
                     58:        {
                     59:                if (regs.intmask < 4)
                     60:                        pendingInterrupts &= ~(1 << 4);
                     61:                return 4;
                     62:        }
                     63:        else if (pendingInterrupts & (1 << 2))    /* HBL interrupt? */
                     64:        {
                     65:                if (regs.intmask < 2)
                     66:                        pendingInterrupts &= ~(1 << 2);
                     67:                return 2;
                     68:        }
                     69: 
                     70:        return -1;
                     71: }
                     72: 
                     73: 
                     74: /**
                     75:  * Initialize 680x0 emulation
                     76:  */
                     77: int Init680x0(void)
                     78: {
                     79:        currprefs.cpu_level = changed_prefs.cpu_level = ConfigureParams.System.nCpuLevel;
                     80:        currprefs.cpu_compatible = changed_prefs.cpu_compatible = ConfigureParams.System.bCompatibleCpu;
                     81:        currprefs.address_space_24 = changed_prefs.address_space_24 = false;
                     82: 
                     83:        init_m68k();
                     84: 
                     85:        return true;
                     86: }
                     87: 
                     88: 
                     89: /**
                     90:  * Deinitialize 680x0 emulation
                     91:  */
                     92: void Exit680x0(void)
                     93: {
                     94:        memory_uninit();
                     95: 
                     96:        free(table68k);
                     97:        table68k = NULL;
                     98: }
                     99: 
                    100: 
                    101: /**
                    102:  * Check if the CPU type has been changed
                    103:  */
                    104: void check_prefs_changed_cpu(void)
                    105: {
                    106:        if (currprefs.cpu_level != changed_prefs.cpu_level
                    107:                        || currprefs.cpu_compatible != changed_prefs.cpu_compatible)
                    108:        {
                    109:                currprefs.cpu_level = changed_prefs.cpu_level;
                    110:                currprefs.cpu_compatible = changed_prefs.cpu_compatible;
                    111:                set_special(SPCFLAG_MODE_CHANGE);
                    112:                build_cpufunctbl ();
                    113:        }
                    114: }
                    115: 
                    116: 
                    117: 

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.