59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
# Todos
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- [x] How to capture arguments passed to a C program
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```c
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// argc is the number of args passed
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// argc is always 1 or more
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// argc always has name/path of program as first arg
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int main(int argc, char *argv[]) {
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// do stuff with the args
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}
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```
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- [x] How to print argument value
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```
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printf("%s", argv[1]);
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```
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- [x] Read a file
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```c
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// open file in read mode. returns NULL if doesn't exist
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FILE *file_ptr = fread(file_path, "r");
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// seeking to end of file.
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// useful telling number of bytes
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fseek(file_ptr, 0, SEEK_END);
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// get number of bytes
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int num_of_bytes = ftell(file_ptr);
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// seek to begin of file
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fseek(file_ptr, 0, SEEK_SET);
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```
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- [x] Store contents of file in memory
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- [x] Print file contents
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- [x] Print instructions
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- [x] Make sure program occupies correct space in chip memory
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- [x] Parse individual instructions from binary CHIP-8 file
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- [x] Print all instructions from CHIP-8 file
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- [x] Write all CHIP-8 IBM logo opcodes to CSV file
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- [x] Implement opcodes present in the IMB logo CHIP-8 file
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| x | Opcode | Type | Description |
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|---|--------|------|------------------------------|
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| x | `00E0` | 00E0 | Clear display |
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| x | `1nnn` | 1nnn | Jump to address |
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| x | `3xkk` | 3xkk | Skip next if Vx == kk |
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| x | `6xkk` | 6xkk | Load register with immediate |
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| x | `7xkk` | 7xkk | Add immediate to Vx |
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| x | `ANNN` | ANNN | Set index register |
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| x | `Bnnn` | Bnnn | Jump to V0 + addr |
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| x | `Dxyn` | Dxyn | Draw sprite |
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- [ ] Migrate drawing to raylib window
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- [ ] Implement remaining instructions
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- [ ] Handle keyboard input
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