| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2020-08-30 | move timers to a function | Daniel Jones | 1 | -5/+8 | |
| 2020-08-22 | added command line options for speed and video scale | Daniel Jones | 1 | -9/+0 | |
| ./program speed scale rom | |||||
| 2020-08-21 | added license information | Daniel Jones | 1 | -0/+15 | |
| 2020-08-21 | fixed wait until key press opcode | Daniel Jones | 1 | -7/+9 | |
| 2020-08-21 | correct Fx55 and fx6 opcodes | Daniel Jones | 1 | -11/+4 | |
| 2020-08-21 | more instructions implemented | Daniel Jones | 1 | -14/+118 | |
| a good few roms work now, many glitches and such though. some roms wont work | |||||
| 2020-08-19 | implemented more instructions | Daniel Jones | 1 | -5/+71 | |
| these instructions are mostly untested at the moment, i need to test them | |||||
| 2020-08-19 | instructions and debugging features | Daniel Jones | 1 | -5/+20 | |
| added some more instructions, particularly calling and returning from subroutines using the stack. also added stepping through the program using the '.' key to advance one cycle | |||||
| 2020-08-19 | begin implementing instructions | Daniel Jones | 1 | -1/+71 | |
| screen clearing and loading bytes into registers implemented currently | |||||
| 2020-08-18 | replace magic numbers with constants | Daniel Jones | 1 | -11/+11 | |
| 2020-08-18 | implemented keypad | Daniel Jones | 1 | -0/+6 | |
| hex keypad is mapped to keys 1234,qwer,asdf,zxcv | |||||
| 2020-08-17 | implement pixel XORing and wrapping | Daniel Jones | 1 | -13/+17 | |
| sprites are properly XOR'd to the display, setting the 0xF register as appropriate. sprites also wrap on the bottom and irght side of the screen. because you can't access negative video memory, wrpaping top to bottom and left to right isn't implemented | |||||
| 2020-08-17 | sprite drawing basic implementation | Daniel Jones | 1 | -1/+37 | |
| begin implementing sprite drawing, currently draws the chip8 fontset well, no idead about other sprites yet | |||||
| 2020-08-16 | more initialisation and added the fontset | Daniel Jones | 1 | -4/+45 | |
| fontset also loaded into memory at 0x0, we have 0x0 to 0x1FF free for anything we want, that is where the interpreter is meant to be | |||||
| 2020-08-16 | began chip8 interpreter, reading rom file | Daniel Jones | 1 | -0/+41 | |
 |
index : chip8 | |
| CHIP-8 interpreter using C and SDL2. | daniel@danieljon.es |
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