Indentation formatting fix.

This commit is contained in:
2026-05-22 07:37:32 +02:00
parent b3ed78097c
commit 4b77405ba4
3 changed files with 85 additions and 87 deletions
+41 -41
View File
@@ -5,54 +5,54 @@ import "core:log"
// System struct, init, constants, fontset
System :: struct {
// 4kb ram
memory: [4096]u8,
// 16 general purpose 8bit registers 0 -> F
v: [16]u8,
// Call stack, up to 16, 2 byte addresses.
stack: [16]u16,
// Stack pointer
sp: u8,
// index register
i: u16,
// PC program counter
pc: u16,
// 64x32-pixel monochrome display
display: [32][64]u8,
keypad: [16]bool,
delay_timer: u8,
sound_timer: u8,
// 4kb ram
memory: [4096]u8,
// 16 general purpose 8bit registers 0 -> F
v: [16]u8,
// Call stack, up to 16, 2 byte addresses.
stack: [16]u16,
// Stack pointer
sp: u8,
// index register
i: u16,
// PC program counter
pc: u16,
// 64x32-pixel monochrome display
display: [32][64]u8,
keypad: [16]bool,
delay_timer: u8,
sound_timer: u8,
}
FONT_SET := [80]u8 {
0xF0, 0x90, 0x90, 0x90, 0xF0, // 0
0x20, 0x60, 0x20, 0x20, 0x70, // 1
0xF0, 0x10, 0xF0, 0x80, 0xF0, // 2
0xF0, 0x10, 0xF0, 0x10, 0xF0, // 3
0x90, 0x90, 0xF0, 0x10, 0x10, // 4
0xF0, 0x80, 0xF0, 0x10, 0xF0, // 5
0xF0, 0x80, 0xF0, 0x90, 0xF0, // 6
0xF0, 0x10, 0x20, 0x40, 0x40, // 7
0xF0, 0x90, 0xF0, 0x90, 0xF0, // 8
0xF0, 0x90, 0xF0, 0x10, 0xF0, // 9
0xF0, 0x90, 0xF0, 0x90, 0x90, // A
0xE0, 0x90, 0xE0, 0x90, 0xE0, // B
0xF0, 0x80, 0x80, 0x80, 0xF0, // C
0xE0, 0x90, 0x90, 0x90, 0xE0, // D
0xF0, 0x80, 0xF0, 0x80, 0xF0, // E
0xF0, 0x80, 0xF0, 0x80, 0x80 // F
0xF0, 0x90, 0x90, 0x90, 0xF0, // 0
0x20, 0x60, 0x20, 0x20, 0x70, // 1
0xF0, 0x10, 0xF0, 0x80, 0xF0, // 2
0xF0, 0x10, 0xF0, 0x10, 0xF0, // 3
0x90, 0x90, 0xF0, 0x10, 0x10, // 4
0xF0, 0x80, 0xF0, 0x10, 0xF0, // 5
0xF0, 0x80, 0xF0, 0x90, 0xF0, // 6
0xF0, 0x10, 0x20, 0x40, 0x40, // 7
0xF0, 0x90, 0xF0, 0x90, 0xF0, // 8
0xF0, 0x90, 0xF0, 0x10, 0xF0, // 9
0xF0, 0x90, 0xF0, 0x90, 0x90, // A
0xE0, 0x90, 0xE0, 0x90, 0xE0, // B
0xF0, 0x80, 0x80, 0x80, 0xF0, // C
0xE0, 0x90, 0x90, 0x90, 0xE0, // D
0xF0, 0x80, 0xF0, 0x80, 0xF0, // E
0xF0, 0x80, 0xF0, 0x80, 0x80 // F
}
init :: proc() -> System {
log.info("Booting chip 8 cpu")
log.info("Booting chip 8 cpu")
// Structs are zero initialized so timers, sp etc are good.
s := System { pc = 0x200 }
// Structs are zero initialized so timers, sp etc are good.
s := System { pc = 0x200 }
// load fonts into the memory
for v, i in FONT_SET {
s.memory[i] = v
}
// load fonts into the memory
for v, i in FONT_SET {
s.memory[i] = v
}
return s
return s
}
+12 -14
View File
@@ -6,22 +6,20 @@ import "core:log"
import "core:os"
load_rom :: proc(s: ^System, file_path: string) -> os.Error {
log.info("Loading rom from file")
log.info("Loading rom from file")
data, read_err := os.read_entire_file(file_path, context.allocator)
if read_err != os.ERROR_NONE {
log.errorf("failed to read rom %v", read_err)
return read_err
}
defer delete(data)
data, read_err := os.read_entire_file(file_path, context.allocator)
if read_err != os.ERROR_NONE {
log.errorf("failed to read rom %v", read_err)
return read_err
}
defer delete(data)
for byte,i in data {
s.memory[0x200 + i] = byte
}
for byte,i in data {
s.memory[0x200 + i] = byte
}
log.infof("First few bytes: %X %X %X %X", s.memory[0x200], s.memory[0x201], s.memory[0x202], s.memory[0x203])
log.infof("First few bytes: %X %X %X %X", s.memory[0x200], s.memory[0x201], s.memory[0x202], s.memory[0x203])
return nil
return nil
}