src/hardware/snd_pc98/cbus/boardx2.c

#include        "compiler.h"
#include        "pccore.h"
#include        "iocore.h"
#include        "cbuscore.h"
#include        "boardx2.h"
#include        "pcm86io.h"
#include        "sound.h"
#include        "fmboard.h"
#include        "s98.h"


static void IOOUTCALL opn_o088(UINT port, REG8 dat) {

        opn.addr2 = dat;
        opn.data2 = dat;
        (void)port;
}

static void IOOUTCALL opn_o08a(UINT port, REG8 dat) {

        UINT    addr;

        opn.data2 = dat;
        addr = opn.addr2;
        if (addr < 0x10) {
                if (addr != 0x0e) {
                        psggen_setreg(&psg1, addr, dat);
                }
        }
        else {
                if (addr < 0x30) {
                        if (addr == 0x28) {
                                if ((dat & 0x0f) < 3) {
                                        opngen_keyon(dat & 0x0f, dat);
                                }
                        }
                        else {
                                fmtimer_setreg(addr, dat);
                                if (addr == 0x27) {
                                        opnch[2].extop = dat & 0xc0;
                                }
                        }
                }
                else if (addr < 0xc0) {
                        opngen_setreg(0, addr, dat);
                }
                opn.reg[addr + 0x200] = dat;
        }
        (void)port;
}

static REG8 IOINPCALL opn_i088(UINT port) {

        (void)port;
        return(fmtimer.status);
}

static REG8 IOINPCALL opn_i08a(UINT port) {

        UINT    addr;

        addr = opn.addr2;
        if (addr == 0x0e) {
                return(0xff);
        }
        if (addr < 0x10) {
                return(psggen_getreg(&psg1, addr));
        }
        else {
                (void)port;
                return(opn.data2);
        }
}


// ----

static void IOOUTCALL opna_o188(UINT port, REG8 dat) {

        opn.addr = dat;
        opn.data = dat;
        (void)port;
}

static void IOOUTCALL opna_o18a(UINT port, REG8 dat) {

        UINT    addr;

        opn.data = dat;
        addr = opn.addr;
        if (addr >= 0x100) {
                return;
        }
        S98_put(NORMAL2608, addr, dat);
        if (addr < 0x10) {
                if (addr != 0x0e) {
                        psggen_setreg(&psg2, addr, dat);
                }
        }
        else {
                if (addr < 0x20) {
                        if (opn.extend) {
                                rhythm_setreg(&rhythm, addr, dat);
                        }
                }
                else if (addr < 0x30) {
                        if (addr == 0x28) {
                                if ((dat & 0x0f) < 3) {
                                        opngen_keyon((dat & 0x0f) + 3, dat);
                                }
                                else if (((dat & 0x0f) != 3) &&
                                                ((dat & 0x0f) < 7)) {
                                        opngen_keyon((dat & 0x0f) + 2, dat);
                                }
                        }
                        else {
                                fmtimer_setreg(addr, dat);
                                if (addr == 0x27) {
                                        opnch[2].extop = dat & 0xc0;
                                }
                        }
                }
                else if (addr < 0xc0) {
                        opngen_setreg(3, addr, dat);
                }
                opn.reg[addr] = dat;
        }
        (void)port;
}

static void IOOUTCALL opna_o18c(UINT port, REG8 dat) {

        if (opn.extend) {
                opn.addr = dat + 0x100;
                opn.data = dat;
        }
        (void)port;
}

static void IOOUTCALL opna_o18e(UINT port, REG8 dat) {

        UINT    addr;

        if (!opn.extend) {
                return;
        }
        addr = opn.addr - 0x100;
        if (addr >= 0x100) {
                return;
        }
        S98_put(EXTEND2608, addr, dat);
        opn.reg[addr + 0x100] = dat;
        if (addr >= 0x30) {
                opngen_setreg(6, addr, dat);
        }
        else {
                if (addr == 0x10) {
                        if (!(dat & 0x80)) {
                                opn.adpcmmask = ~(dat & 0x1c);
                        }
                }
        }
        (void)port;
}

static REG8 IOINPCALL opna_i188(UINT port) {

        (void)port;
        return(fmtimer.status);
}

static REG8 IOINPCALL opna_i18a(UINT port) {

        UINT    addr;

        addr = opn.addr;
        if (addr == 0x0e) {
                return(fmboard_getjoy(&psg2));
        }
        else if (addr < 0x10) {
                return(psggen_getreg(&psg2, addr));
        }
        else if (addr == 0xff) {
                return(1);
        }
        else {
                (void)port;
                return(opn.data);
        }
}

static REG8 IOINPCALL opna_i18c(UINT port) {

        if (opn.extend) {
                return((fmtimer.status & 3) | (opn.adpcmmask & 8));
        }
        (void)port;
        return(0xff);
}

static REG8 IOINPCALL opna_i18e(UINT port) {

        if (opn.extend) {
                UINT addr = opn.addr - 0x100;
                if ((addr == 0x08) || (addr == 0x0f)) {
                        return(opn.reg[addr + 0x100]);
                }
                return(opn.data);
        }
        (void)port;
        return(0xff);
}

static void extendchannel(REG8 enable) {

        opn.extend = enable;
        if (enable) {
                opn.channels = 9;
                opngen_setcfg(9, OPN_STEREO | 0x038);
        }
        else {
                opn.channels = 6;
                opngen_setcfg(6, OPN_MONORAL | 0x038);
                rhythm_setreg(&rhythm, 0x10, 0xff);
        }
}


// ----

static const IOOUT opn_o[4] = {
                        opn_o088,       opn_o08a,       NULL,           NULL};

static const IOINP opn_i[4] = {
                        opn_i088,       opn_i08a,       NULL,           NULL};

static const IOOUT opna_o[4] = {
                        opna_o188,      opna_o18a,      opna_o18c,      opna_o18e};

static const IOINP opna_i[4] = {
                        opna_i188,      opna_i18a,      opna_i18c,      opna_i18e};


void boardx2_reset(const NP2CFG *pConfig) {

        fmtimer_reset(0xc0);
        opn.channels = 6;
        opngen_setcfg(6, OPN_STEREO | 0x1c0);
        soundrom_load(0xcc000, OEMTEXT("86"));
        fmboard_extreg(extendchannel);

        (void)pConfig;
}

void boardx2_bind(void) {

        fmboard_fmrestore(0, 2);
        fmboard_fmrestore(3, 0);
        fmboard_fmrestore(6, 1);
        psggen_restore(&psg1);
        psggen_restore(&psg2);
        fmboard_rhyrestore(&rhythm, 0);
        sound_streamregist(&opngen, (SOUNDCB)opngen_getpcm);
        sound_streamregist(&psg1, (SOUNDCB)psggen_getpcm);
        sound_streamregist(&psg2, (SOUNDCB)psggen_getpcm);
        rhythm_bind(&rhythm);
        pcm86io_bind();
        cbuscore_attachsndex(0x088, opn_o, opn_i);
        cbuscore_attachsndex(0x188, opna_o, opna_i);
}