mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-10-04 12:41:33 +02:00
805398e5a8
A new version of bsnes has been released. It contains a few minor emulation fixes, as well as user interface improvements. Behind the scenes, the source has been cleaned up more in preparation for running the CPU and PPU (video processor) separately from each other (eg with no enslavement.) This is required for implementing a clock cycle based PPU renderer.
- Greatly improved invalid DMA transfer behavior, should be nearly perfect now
- Major code cleanup -- most importantly, almost all PPU timing-related settings moved back to PPU, from CPU
- Added option to auto-detect file type by inspecting file headers rather than file extensions
- Rewrote video filter system to move it out of the emulation core -- HQ2x and Scale2x will work even in hires and interlace modes now, 50% scanline filter added
- Re-added bsnes window icon
- Added new controller graphic when assigning joypad keys [FitzRoy]
- Redundant "Advanced" panel settings which can be configured via the GUI are no longer displayed
- Improved speed regulation settings
- XP and Vista themes will now apply to bsnes controls
- Added "Path Settings" window to allow easy selection of default file directories
- Tab key now mostly works throughout most of the GUI (needs improvement)
- Main window will no longer disappear when setting a video multipler which results in a window size larger than the current desktop resolution
- Added two new advanced options: one to control GUI window opacity, and one to adjust the statusbar text
138 lines
2.7 KiB
C++
138 lines
2.7 KiB
C++
#ifdef BSX_CPP
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void BSXBase::init() {
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}
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void BSXBase::enable() {
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for(uint16 i = 0x2188; i <= 0x219f; i++) memory::mmio.map(i, *this);
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}
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void BSXBase::power() {
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reset();
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}
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void BSXBase::reset() {
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memset(®s, 0x00, sizeof regs);
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}
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uint8 BSXBase::mmio_read(uint addr) {
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addr &= 0xffff;
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switch(addr) {
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case 0x2188: return regs.r2188;
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case 0x2189: return regs.r2189;
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case 0x218a: return regs.r218a;
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case 0x218c: return regs.r218c;
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case 0x218e: return regs.r218e;
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case 0x218f: return regs.r218f;
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case 0x2190: return regs.r2190;
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case 0x2192: {
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uint counter = regs.r2192_counter++;
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if(regs.r2192_counter >= 18) regs.r2192_counter = 0;
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if(counter == 0) {
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time_t rawtime;
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time(&rawtime);
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tm *t = localtime(&rawtime);
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regs.r2192_hour = t->tm_hour;
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regs.r2192_minute = t->tm_min;
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regs.r2192_second = t->tm_sec;
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}
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switch(counter) {
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case 0: return 0x00; //???
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case 1: return 0x00; //???
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case 2: return 0x00; //???
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case 3: return 0x00; //???
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case 4: return 0x00; //???
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case 5: return 0x01;
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case 6: return 0x01;
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case 7: return 0x00;
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case 8: return 0x00;
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case 9: return 0x00;
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case 10: return regs.r2192_second;
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case 11: return regs.r2192_minute;
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case 12: return regs.r2192_hour;
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case 13: return 0x00; //???
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case 14: return 0x00; //???
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case 15: return 0x00; //???
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case 16: return 0x00; //???
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case 17: return 0x00; //???
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}
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} break;
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case 0x2193: return regs.r2193 & ~0x0c;
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case 0x2194: return regs.r2194;
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case 0x2196: return regs.r2196;
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case 0x2197: return regs.r2197;
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case 0x2199: return regs.r2199;
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}
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return cpu.regs.mdr;
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}
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void BSXBase::mmio_write(uint addr, uint8 data) {
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addr &= 0xffff;
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switch(addr) {
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case 0x2188: {
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regs.r2188 = data;
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} break;
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case 0x2189: {
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regs.r2189 = data;
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} break;
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case 0x218a: {
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regs.r218a = data;
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} break;
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case 0x218b: {
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regs.r218b = data;
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} break;
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case 0x218c: {
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regs.r218c = data;
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} break;
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case 0x218e: {
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regs.r218e = data;
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} break;
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case 0x218f: {
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regs.r218e >>= 1;
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regs.r218e = regs.r218f - regs.r218e;
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regs.r218f >>= 1;
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} break;
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case 0x2191: {
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regs.r2191 = data;
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regs.r2192_counter = 0;
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} break;
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case 0x2192: {
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regs.r2190 = 0x80;
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} break;
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case 0x2193: {
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regs.r2193 = data;
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} break;
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case 0x2194: {
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regs.r2194 = data;
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} break;
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case 0x2197: {
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regs.r2197 = data;
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} break;
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case 0x2199: {
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regs.r2199 = data;
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} break;
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}
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}
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#endif //ifdef BSX_CPP
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