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bsnes/gameboy/lcd/lcd.hpp

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Update to release v000r02. byuu says: 314 of 512 opcodes implemented, can execute the first 67,450 instructions of Tetris. I also added an MMIO bus, ala bsnes, so that I can map and access individual registers with a single indirection.
2010-12-29 11:03:42 +00:00
struct LCD : Processor, MMIO {
#include "mmio/mmio.hpp"
struct Status {
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
unsigned lx;
//$ff40 LCDC
bool display_enable;
bool window_tilemap_select;
bool window_display_enable;
bool bg_tiledata_select;
bool bg_tilemap_select;
bool obj_size;
bool obj_enable;
Update to release v000r06. byuu says: Added MBC1 emulation, although battery RAM doesn't save or load to disk yet. Made up a fake MBC0 which is really just saying 'no MBC', for consistent handling of all MBCs. Added bumpers to stop ROM/RAM out of bounds accesses. Added STAT interrupts for LY coincidence, Vblank and Hblank (not for OAM access yet, I don't know the timings.) Fixed timer interrupt [Jonas Quinn] Made all interrupts call a CPU function instead of just setting a flag for better control (to allow below addition.) Added HALT and STOP emulation, the latter permanently locks the Game Boy for now. The former breaks on interrupts. Rewrote all the rendering code to suck 50% less, though it's still absolutely miserable and scanline-based. Added pixel-level horizontal scrolling to BGs. Fixed OBJ rendering error that was making them render upside down (I was flipping to compensate before.) Added OBJ 8x16 mode. Added OBJ priority support. Added window (but it's broken to all hell on Mega Man II.)
2011-01-02 04:46:54 +00:00
bool bg_enable;
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
//$ff41 STAT
bool interrupt_lyc;
bool interrupt_oam;
bool interrupt_vblank;
bool interrupt_hblank;
//$ff42 SCY
uint8 scy;
//$ff43 SCX
uint8 scx;
//$ff44 LY
uint8 ly;
//$ff45 LYC
uint8 lyc;
//$ff47 BGP
uint8 bgp[4];
//$ff48 OBP0
//$ff49 OBP1
Update to release v000r05. byuu says: Fixed all of the previously mentioned problems by myself and Jonas Quinn. Fixed up JOYP and hooked up JOYP interrupts, they work on JOYP writes as well if your selection makes the low four bits change to != 0xF. Added basic sprite emulation, very very very lousy but it works for Tetris. Fixed DAA, fuck that opcode. Fixes blargg's CPU tests 1 and 11 (for some odd reason.) Only test 2 is failing, on the "EI" test. Maybe it relies on STAT interrupts? Did some other stuff. Tetris is now 100% fully playable. But that renderer is an abomination. Soooooo simplistic and missing so many edge cases. But holy shit, a fully playable commercial game in three days. I would have killed to have made that progress when I started on bsnes.
2010-12-31 05:43:47 +00:00
uint8 obp[2][4];
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
//$ff4a WY
uint8 wy;
//$ff4b WX
uint8 wx;
Update to release v000r02. byuu says: 314 of 512 opcodes implemented, can execute the first 67,450 instructions of Tetris. I also added an MMIO bus, ala bsnes, so that I can map and access individual registers with a single indirection.
2010-12-29 11:03:42 +00:00
} status;
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
uint8 screen[160 * 144];
Update to release v000r02. byuu says: 314 of 512 opcodes implemented, can execute the first 67,450 instructions of Tetris. I also added an MMIO bus, ala bsnes, so that I can map and access individual registers with a single indirection.
2010-12-29 11:03:42 +00:00
uint8 vram[8192];
uint8 oam[160];
Update to release v000r07. byuu says: Changelog: - fixed sprite Vflip check - fixed up window rendering (well, mostly, works great in Megaman II but not so great in Makaitoushi SaGa) - added MBC2, MBC5 (already had MBC0, MBC1) - removed reset, hooked up power cycle and Vsync toggle - some other stuff Makaitoushi SaGa locks on the main menu after some graphical glitches on the title screen, damn. Shin Megami Tensei - Devichil Black Book locks up immediately, hitting HALT opcodes all the time, damn again. Megaman II should be fully playable now. Contra 3 is really close, but goes crazy on the turtle boss fight.
2011-01-03 04:28:36 +00:00
uint8 line[160];
Update to release v000r06. byuu says: Added MBC1 emulation, although battery RAM doesn't save or load to disk yet. Made up a fake MBC0 which is really just saying 'no MBC', for consistent handling of all MBCs. Added bumpers to stop ROM/RAM out of bounds accesses. Added STAT interrupts for LY coincidence, Vblank and Hblank (not for OAM access yet, I don't know the timings.) Fixed timer interrupt [Jonas Quinn] Made all interrupts call a CPU function instead of just setting a flag for better control (to allow below addition.) Added HALT and STOP emulation, the latter permanently locks the Game Boy for now. The former breaks on interrupts. Rewrote all the rendering code to suck 50% less, though it's still absolutely miserable and scanline-based. Added pixel-level horizontal scrolling to BGs. Fixed OBJ rendering error that was making them render upside down (I was flipping to compensate before.) Added OBJ 8x16 mode. Added OBJ priority support. Added window (but it's broken to all hell on Mega Man II.)
2011-01-02 04:46:54 +00:00
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
static void Main();
void main();
void add_clocks(unsigned clocks);
void scanline();
void frame();
void render();
Update to release v000r07. byuu says: Changelog: - fixed sprite Vflip check - fixed up window rendering (well, mostly, works great in Megaman II but not so great in Makaitoushi SaGa) - added MBC2, MBC5 (already had MBC0, MBC1) - removed reset, hooked up power cycle and Vsync toggle - some other stuff Makaitoushi SaGa locks on the main menu after some graphical glitches on the title screen, damn. Shin Megami Tensei - Devichil Black Book locks up immediately, hitting HALT opcodes all the time, damn again. Megaman II should be fully playable now. Contra 3 is really close, but goes crazy on the turtle boss fight.
2011-01-03 04:28:36 +00:00
uint16 read_tile(bool select, unsigned x, unsigned y);
Update to release v000r06. byuu says: Added MBC1 emulation, although battery RAM doesn't save or load to disk yet. Made up a fake MBC0 which is really just saying 'no MBC', for consistent handling of all MBCs. Added bumpers to stop ROM/RAM out of bounds accesses. Added STAT interrupts for LY coincidence, Vblank and Hblank (not for OAM access yet, I don't know the timings.) Fixed timer interrupt [Jonas Quinn] Made all interrupts call a CPU function instead of just setting a flag for better control (to allow below addition.) Added HALT and STOP emulation, the latter permanently locks the Game Boy for now. The former breaks on interrupts. Rewrote all the rendering code to suck 50% less, though it's still absolutely miserable and scanline-based. Added pixel-level horizontal scrolling to BGs. Fixed OBJ rendering error that was making them render upside down (I was flipping to compensate before.) Added OBJ 8x16 mode. Added OBJ priority support. Added window (but it's broken to all hell on Mega Man II.)
2011-01-02 04:46:54 +00:00
void render_bg();
void render_window();
void render_obj();
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
Update to release v000r02. byuu says: 314 of 512 opcodes implemented, can execute the first 67,450 instructions of Tetris. I also added an MMIO bus, ala bsnes, so that I can map and access individual registers with a single indirection.
2010-12-29 11:03:42 +00:00
void power();
};
extern LCD lcd;