#define GEN_STATE_VERSION       2

class CGenState
{
        U64 magic;
        I64 version;
        m68ki_cpu_core cpu;
        CZ80 z80_s;
        I64 z80_bus_ack_s,z80_reset_s;
        I64 control_code_s,control_pending_s;
        U32 control_address_s,vdp_status_s;
        I64 dma_length_s;
        U32 dma_source_s;
        I64 dma_fill_s;
        I64 scrn_w,scrn_h;
        U8 vdp_regs[0x20];
        U16 cram[0x40],vsram[0x40];
        U16 btns[3],pads[3];
        U8 ioregs[16];
        CYM2612 ym_s;
        CPSG psg_s;
        U8 ram[0x10000];
        U8 zram[0x2000];
        U8 vram[0x10000];
};

U0 SaveState()
{
        CGenState *s;
        if (!RAM)
                return;
        s=CAlloc(sizeof(CGenState));
        s->magic='TGENSAV';
        s->version=GEN_STATE_VERSION;
        MemCpy(&s->cpu,&m68ki_cpu,sizeof(m68ki_cpu_core));
        MemCpy(&s->z80_s,&z80,sizeof(CZ80));
        s->z80_bus_ack_s=z80_bus_ack;
        s->z80_reset_s=z80_reset;
        s->control_code_s=control_code;
        s->control_pending_s=control_pending;
        s->control_address_s=control_address;
        s->vdp_status_s=vdp_status;
        s->dma_length_s=dma_length;
        s->dma_source_s=dma_source;
        s->dma_fill_s=dma_fill;
        s->scrn_w=screen_width;
        s->scrn_h=screen_height;
        MemCpy(s->vdp_regs,vdp_reg,0x20);
        MemCpy(s->cram,CRAM,0x40*sizeof(U16));
        MemCpy(s->vsram,VSRAM,0x40*sizeof(U16));
        MemCpy(s->btns,button_state,3*sizeof(U16));
        MemCpy(s->pads,pad_state,3*sizeof(U16));
        MemCpy(s->ioregs,io_reg,16);
        MemCpy(&s->ym_s,&ym,sizeof(CYM2612));
        MemCpy(&s->psg_s,&psg,sizeof(CPSG));
        MemCpy(s->ram,RAM,0x10000);
        MemCpy(s->zram,ZRAM,0x2000);
        MemCpy(s->vram,VRAM,0x10000);
        if (FileWrite(gen_state_filename,s,sizeof(CGenState)))
                "TempleGen: state saved to \"%s\".\n",gen_state_filename;
        else
                "TempleGen: couldn't write \"%s\".\n",gen_state_filename;
        Free(s);
}

U0 LoadState()
{
        I64 size;
        CGenState *s=FileRead(gen_state_filename,&size);
        if (!s) {
                "TempleGen: no save state \"%s\".\n",gen_state_filename;
                return;
        }
        if (size!=sizeof(CGenState) || s->magic!='TGENSAV' ||
                s->version!=GEN_STATE_VERSION) {
                "TempleGen: \"%s\" isn't a valid save state.\n",
                        gen_state_filename;
                Free(s);
                return;
        }
        MemCpy(&m68ki_cpu,&s->cpu,sizeof(m68ki_cpu_core));
        m68ki_cpu.cyc_instruction=m68ki_cycles[0];
        m68ki_cpu.cyc_exception=m68ki_exception_cycle_table[0];
        m68ki_cpu.int_ack_callback=NULL;
        m68ki_cpu.bkpt_ack_callback=NULL;
        m68ki_cpu.reset_instr_callback=NULL;
        m68ki_cpu.pc_changed_callback=NULL;
        m68ki_cpu.set_fc_callback=NULL;
        m68ki_cpu.instr_hook_callback=NULL;
        m68ki_remaining_cycles=0;
        MemCpy(&z80,&s->z80_s,sizeof(CZ80));
        z80_bus_ack=s->z80_bus_ack_s;
        z80_reset=s->z80_reset_s;
        control_code=s->control_code_s;
        control_pending=s->control_pending_s;
        control_address=s->control_address_s;
        vdp_status=s->vdp_status_s;
        dma_length=s->dma_length_s;
        dma_source=s->dma_source_s;
        dma_fill=s->dma_fill_s;
        screen_width=s->scrn_w;
        screen_height=s->scrn_h;
        MemCpy(vdp_reg,s->vdp_regs,0x20);
        MemCpy(CRAM,s->cram,0x40*sizeof(U16));
        MemCpy(VSRAM,s->vsram,0x40*sizeof(U16));
        MemCpy(button_state,s->btns,3*sizeof(U16));
        MemCpy(pad_state,s->pads,3*sizeof(U16));
        MemCpy(io_reg,s->ioregs,16);
        MemCpy(&ym,&s->ym_s,sizeof(CYM2612));
        MemCpy(&psg,&s->psg_s,sizeof(CPSG));
        MemCpy(RAM,s->ram,0x10000);
        MemCpy(ZRAM,s->zram,0x2000);
        MemCpy(VRAM,s->vram,0x10000);
        Free(s);
        gen_cram_dirty=~0;
        if (gen_snd_fifo) {
                FifoI64Flush(gen_snd_fifo);
                gen_snd_last=0;
        }
        "TempleGen: state loaded from \"%s\".\n",gen_state_filename;
}