mirror of
https://github.com/bsnes-emu/bsnes.git
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4e2eb23835
byuu says: Changelog: - added Cocoa target: higan can now be compiled for OS X Lion [Cydrak, byuu] - SNES/accuracy profile hires color blending improvements - fixes Marvelous text [AWJ] - fixed a slight bug in SNES/SA-1 VBR support caused by a typo - added support for multi-pass shaders that can load external textures (requires OpenGL 3.2+) - added game library path (used by ananke->Import Game) to Settings->Advanced - system profiles, shaders and cheats database can be stored in "all users" shared folders now (eg /usr/share on Linux) - all configuration files are in BML format now, instead of XML (much easier to read and edit this way) - main window supports drag-and-drop of game folders (but not game files / ZIP archives) - audio buffer clears when entering a modal loop on Windows (prevents audio repetition with DirectSound driver) - a substantial amount of code clean-up (probably the biggest refactoring to date) One highly desired target for this release was to default to the optimal drivers instead of the safest drivers, but because AMD drivers don't seem to like my OpenGL 3.2 driver, I've decided to postpone that. AMD has too big a market share. Hopefully with v093 officially released, we can get some public input on what AMD doesn't like.
101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
//Dev.ID Size Blocks Manufacturer
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//====== ===== ======== ============
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//0xd4bf 64KB 16x4096 SST
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//0x1cc2 64KB 16x4096 Macronix
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//0x1b32 64KB 16x4096 Panasonic
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//0x3d1f 64KB 512x 128 Atmel
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//0x1362 128KB 32x4096 Sanyo
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//0x09c2 128KB 32x4096 Macronix
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uint8 Cartridge::FlashROM::read(uint16 addr) {
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if(idmode) {
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if(addr == 0x0000) return id >> 0;
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if(addr == 0x0001) return id >> 8;
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return 0u;
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}
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return data[bank << 16 | addr];
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}
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void Cartridge::FlashROM::write(uint16 addr, uint8 byte) {
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if(bankselect) {
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bankselect = false;
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//bank select is only applicable on 128KB chips
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if(addr == 0x0000) bank = byte & (size > 64 * 1024);
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return;
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}
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if(writeselect) {
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//Atmel writes 128 bytes per command; all others write 1 byte per command
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if(id != 0x3d1f || (addr & 0x007f) == 0x007f) writeselect = false;
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data[bank << 16 | addr] = byte;
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return;
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}
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if(byte == 0xaa && addr == 0x5555) { unlockhi = true; return; }
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if(byte == 0x55 && addr == 0x2aaa) { unlocklo = true; return; }
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if(unlockhi && unlocklo) {
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unlockhi = false;
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unlocklo = false;
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if(byte == 0x10 && addr == 0x5555) {
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if(erasemode) {
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erasemode = false;
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for(unsigned n = 0; n < size; n++) data[n] = 0xff;
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}
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}
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if(byte == 0x30 && (addr & 0x0fff) == 0x0000) {
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//command only valid for non-Atmel chips
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if(erasemode && id != 0x3d1f) {
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erasemode = false;
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unsigned offset = bank << 16 | (addr & ~4095);
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for(unsigned n = 0; n < 4096; n++) data[offset++] = 0xff;
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}
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}
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if(byte == 0x80 && addr == 0x5555) {
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erasemode = true;
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}
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if(byte == 0x90 && addr == 0x5555) {
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idmode = true;
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}
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if(byte == 0xa0 && addr == 0x5555) {
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writeselect = true;
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}
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if(byte == 0xb0 && addr == 0x5555) {
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bankselect = true;
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}
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if(byte == 0xf0 && addr == 0x5555) {
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idmode = false;
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}
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}
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}
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void Cartridge::FlashROM::power() {
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unlockhi = false;
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unlocklo = false;
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idmode = false;
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bankselect = false;
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writeselect = false;
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bank = 0;
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}
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void Cartridge::FlashROM::serialize(serializer& s) {
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s.array(data, size);
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s.integer(size);
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s.integer(id);
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s.integer(unlockhi);
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s.integer(unlocklo);
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s.integer(idmode);
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s.integer(erasemode);
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s.integer(bankselect);
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s.integer(writeselect);
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s.integer(bank);
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}
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