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bsnes/gameboy/cpu/cpu.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 CPU : Processor, MMIO {
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
#include "core/core.hpp"
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
#include "mmio/mmio.hpp"
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
#include "timing/timing.hpp"
Initial commit of bgameboy v000. The source tarball also included empty obj/ and out/ directories which git does not support. byuu says: Project started, so basically everything is new. It's basically a rough skeleton that mimics bsnes project structure. Eventually the src/gameboy folder will be copied into bsnes-official and used by the chip/supergameboy core. The middleware layer (supergameboy/interface) will be merged into a new chip/icd2 folder that will represent direct Super Game Boy emulation in the future. At least, if all goes according to plan. There is a simple GUI that can load ROMs, but do nothing after it. It's not hooked up to ruby yet. There is a basic system class and interface to expose the video/audio/input functions. There is a basic memory bus that doesn't support any MBCs yet. There is a CPU skeleton that only handles easy read/write access to the CPU registers (AF is a really fucked up register.) The core is not hooked up to libco yet, but I intend for it to be, so that I can run the CPU + LCD how I like. If it turns out the LCD+audio is easily enslavable, then I'll probably drop libco and just run it like a regular emulator, using a thread wrapper around it in bsnes only. We'll see. The CPU doesn't actually support any opcodes, and loading a ROM won't actually execute anything.
2010-12-28 01:53:15 +00:00
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
struct Status {
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
bool ime;
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 timer0;
unsigned timer1;
unsigned timer2;
unsigned timer3;
//$ff00 JOYP
bool p15;
bool p14;
Update to release v000r05. byuu says: Fixed all of the previously mentioned problems by myself and Jonas Quinn. Fixed up JOYP and hooked up JOYP interrupts, they work on JOYP writes as well if your selection makes the low four bits change to != 0xF. Added basic sprite emulation, very very very lousy but it works for Tetris. Fixed DAA, fuck that opcode. Fixes blargg's CPU tests 1 and 11 (for some odd reason.) Only test 2 is failing, on the "EI" test. Maybe it relies on STAT interrupts? Did some other stuff. Tetris is now 100% fully playable. But that renderer is an abomination. Soooooo simplistic and missing so many edge cases. But holy shit, a fully playable commercial game in three days. I would have killed to have made that progress when I started on bsnes.
2010-12-31 05:43:47 +00:00
uint8 joyp;
Update to release v000r04. byuu says: [screenshot of the Tetris title screen] Less than fourty-eight hours after starting on this. I guess you weren't kidding, Exophase.
2010-12-30 07:18:47 +00:00
//$ff04 DIV
uint8 div;
//$ff05 TIMA
uint8 tima;
//$ff06 TMA
uint8 tma;
//$ff07 TAC
bool timer_enable;
unsigned timer_clock;
//$ff0f IF
bool interrupt_request_joypad;
bool interrupt_request_serial;
bool interrupt_request_timer;
bool interrupt_request_stat;
bool interrupt_request_vblank;
//$ffff IE
bool interrupt_enable_joypad;
bool interrupt_enable_serial;
bool interrupt_enable_timer;
bool interrupt_enable_stat;
bool interrupt_enable_vblank;
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
} status;
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 wram[8192];
uint8 hram[128];
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
static void Main();
Initial commit of bgameboy v000. The source tarball also included empty obj/ and out/ directories which git does not support. byuu says: Project started, so basically everything is new. It's basically a rough skeleton that mimics bsnes project structure. Eventually the src/gameboy folder will be copied into bsnes-official and used by the chip/supergameboy core. The middleware layer (supergameboy/interface) will be merged into a new chip/icd2 folder that will represent direct Super Game Boy emulation in the future. At least, if all goes according to plan. There is a simple GUI that can load ROMs, but do nothing after it. It's not hooked up to ruby yet. There is a basic system class and interface to expose the video/audio/input functions. There is a basic memory bus that doesn't support any MBCs yet. There is a CPU skeleton that only handles easy read/write access to the CPU registers (AF is a really fucked up register.) The core is not hooked up to libco yet, but I intend for it to be, so that I can run the CPU + LCD how I like. If it turns out the LCD+audio is easily enslavable, then I'll probably drop libco and just run it like a regular emulator, using a thread wrapper around it in bsnes only. We'll see. The CPU doesn't actually support any opcodes, and loading a ROM won't actually execute anything.
2010-12-28 01:53:15 +00:00
void main();
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
void interrupt_test();
void interrupt_exec(uint16 pc);
Initial commit of bgameboy v000. The source tarball also included empty obj/ and out/ directories which git does not support. byuu says: Project started, so basically everything is new. It's basically a rough skeleton that mimics bsnes project structure. Eventually the src/gameboy folder will be copied into bsnes-official and used by the chip/supergameboy core. The middleware layer (supergameboy/interface) will be merged into a new chip/icd2 folder that will represent direct Super Game Boy emulation in the future. At least, if all goes according to plan. There is a simple GUI that can load ROMs, but do nothing after it. It's not hooked up to ruby yet. There is a basic system class and interface to expose the video/audio/input functions. There is a basic memory bus that doesn't support any MBCs yet. There is a CPU skeleton that only handles easy read/write access to the CPU registers (AF is a really fucked up register.) The core is not hooked up to libco yet, but I intend for it to be, so that I can run the CPU + LCD how I like. If it turns out the LCD+audio is easily enslavable, then I'll probably drop libco and just run it like a regular emulator, using a thread wrapper around it in bsnes only. We'll see. The CPU doesn't actually support any opcodes, and loading a ROM won't actually execute anything.
2010-12-28 01:53:15 +00:00
void power();
void reset();
Update to release v000r01. byuu says: Hooked up a scheduler to enter/exit the CPU core wherever I want. Added basic 4*1024*1024hz clock, and about eleven or so opcodes. Creating the disassembler as I encounter each new opcode, not skipping ahead to do all 'like other' opcodes, eg if I add 'dec b', I don't then add 'dec c' until I encounter it.
2010-12-28 06:03:02 +00:00
CPU();
Initial commit of bgameboy v000. The source tarball also included empty obj/ and out/ directories which git does not support. byuu says: Project started, so basically everything is new. It's basically a rough skeleton that mimics bsnes project structure. Eventually the src/gameboy folder will be copied into bsnes-official and used by the chip/supergameboy core. The middleware layer (supergameboy/interface) will be merged into a new chip/icd2 folder that will represent direct Super Game Boy emulation in the future. At least, if all goes according to plan. There is a simple GUI that can load ROMs, but do nothing after it. It's not hooked up to ruby yet. There is a basic system class and interface to expose the video/audio/input functions. There is a basic memory bus that doesn't support any MBCs yet. There is a CPU skeleton that only handles easy read/write access to the CPU registers (AF is a really fucked up register.) The core is not hooked up to libco yet, but I intend for it to be, so that I can run the CPU + LCD how I like. If it turns out the LCD+audio is easily enslavable, then I'll probably drop libco and just run it like a regular emulator, using a thread wrapper around it in bsnes only. We'll see. The CPU doesn't actually support any opcodes, and loading a ROM won't actually execute anything.
2010-12-28 01:53:15 +00:00
};
extern CPU cpu;