src/hardware/snd_pc98/sound/soundrom.c

#include    "np2glue.h"
//#include      "compiler.h"
#include        "dosio.h"
//#include      "cpucore.h"
//#include      "pccore.h"
#include        "soundrom.h"

#define     mem     CGetMemBase()

        SOUNDROM        soundrom;


static const OEMCHAR file_sound[] = OEMTEXT("sound");
static const OEMCHAR file_extrom[] = OEMTEXT(".rom");
static const UINT8 defsoundrom[9] = {
                                                        0x01,0x00,0x00,0x00,0xd2,0x00,0x08,0x00,0xcb};


static BRESULT loadsoundrom(UINT address, const OEMCHAR *name) {

        OEMCHAR romname[24];
        OEMCHAR path[MAX_PATH];
        FILEH   fh;
        UINT    rsize;

        file_cpyname(romname, file_sound, NELEMENTS(romname));
        if (name) {
                file_catname(romname, name, NELEMENTS(romname));
        }
        file_catname(romname, file_extrom, NELEMENTS(romname));
        getbiospath(path, romname, NELEMENTS(path));
        fh = file_open_rb(path);
        if (fh == FILEH_INVALID) {
                goto lsr_err;
        }
        rsize = file_read(fh, mem + address, 0x4000);
        file_close(fh);
        if (rsize != 0x4000) {
                goto lsr_err;
        }
        file_cpyname(soundrom.name, romname, NELEMENTS(soundrom.name));
        soundrom.address = address;
        if (address == 0xd0000) {
//              CPU_RAM_D000 &= ~(0x0f << 0);
        }
        else if (address == 0xd4000) {
//              CPU_RAM_D000 &= ~(0x0f << 4);
        }
        return(SUCCESS);

lsr_err:
        return(FAILURE);
}


// ----

void soundrom_reset(void) {

        ZeroMemory(&soundrom, sizeof(soundrom));
}

void soundrom_load(UINT32 address, const OEMCHAR *primary) {

        if (primary != NULL) {
                if (loadsoundrom(address, primary) == SUCCESS) {
                        return;
                }
        }
        if (loadsoundrom(address, NULL) == SUCCESS) {
                return;
        }
        CopyMemory(mem + address + 0x2e00, defsoundrom, sizeof(defsoundrom));
        soundrom.name[0] = '\0';
        soundrom.address = address;
}

void soundrom_loadex(UINT sw, const OEMCHAR *primary) {

        if (sw < 4) {
                soundrom_load((0xc8000 + ((UINT32)sw << 14)), primary);
        }
        else {
                ZeroMemory(&soundrom, sizeof(soundrom));
        }
}