2 NEC N5200 Emulator 'eN5200'
4 Author : Takeda.Toshiya
12 #define SET_BANK(s, e, w, r) { \
13 int sb = (s) >> 11, eb = (e) >> 11; \
14 for(int i = sb; i <= eb; i++) { \
18 wbank[i] = (w) + 0x800 * (i - sb); \
23 rbank[i] = (r) + 0x800 * (i - sb); \
28 void N5200_MEMORY::initialize()
31 memset(ram, 0, sizeof(ram));
32 memset(exram, 0, sizeof(exram));
33 memset(vram, 0, sizeof(vram));
34 memset(tvram, 0, sizeof(tvram));
35 memset(backup, 0, sizeof(backup));
36 memset(ipl, 0xff, sizeof(ipl));
37 memset(rdmy, 0xff, sizeof(rdmy));
40 FILEIO* fio = new FILEIO();
41 if(fio->Fopen(create_local_path(_T("IPL.ROM")), FILEIO_READ_BINARY)) {
42 fio->Fread(ipl, sizeof(ipl), 1);
44 for(int i = 0xa8e; i < 0xafc; i++) {
51 void N5200_MEMORY::release()
54 FILEIO* fio = new FILEIO();
55 if(fio->Fopen(create_local_path(_T("TVRAM.BIN")), FILEIO_WRITE_BINARY)) {
56 fio->Fwrite(tvram, sizeof(tvram), 1);
62 void N5200_MEMORY::reset()
64 SET_BANK(0x000000, 0xffffff, wdmy, rdmy);
65 SET_BANK(0x000000, 0x0bffff, ram, ram);
66 SET_BANK(0x0c0000, 0x0dffff, vram, vram); // ???
67 SET_BANK(0x0e0000, 0x0e77ff, tvram, tvram);
68 SET_BANK(0x0e7800, 0x0effff, backup, backup);
69 SET_BANK(0x0f0000, 0x0fffff, wdmy, ipl);
70 SET_BANK(0x100000, 0x1fffff, exram, exram);
71 SET_BANK(0xff0000, 0xffffff, wdmy, ipl);
76 void N5200_MEMORY::write_data8(uint32_t addr, uint32_t data)
79 if(0xe7800 <= addr && addr < 0xf0000 && protect) {
82 wbank[addr >> 11][addr & 0x7ff] = data;
85 uint32_t N5200_MEMORY::read_data8(uint32_t addr)
88 return rbank[addr >> 11][addr & 0x7ff];
91 void N5200_MEMORY::write_io8(uint32_t addr, uint32_t data)
95 protect = ((data & 1) != 0);
100 uint32_t N5200_MEMORY::read_io8(uint32_t addr)