waiter waiter more comments please

1 files changed, 11 insertions, 1 deletions

diff --git a/cpu/cpu.go b/cpu/cpu.go
index fb673b7..113adf0 100644
--- a/cpu/cpu.go
+++ b/cpu/cpu.go
@@ -13,6 +13,16 @@ type CPU struct {
 	SP      uint8  // stack pointer
 	PC      uint16 // program counter
 	Status  uint8  // status flags
+	// status flags are NV1B DIZC
+	//				    |||| ||||
+	//					|||| |||+- Carry
+	//					|||| ||+-- Zero
+	//					|||| |+--- Interrupt Disable
+	//					|||| +---- Decimal
+	//					|||+------ (no cpu effect, check https://www.nesdev.org/wiki/Status_flags#The_B_flag for a good explanation)
+	//					||+------- (no cpu effect, always pushed as 1)
+	//					|+-------- Overflow
+	//					+--------- Negative
 
 	Bus    Bus
 	Cycles uint64
@@ -21,7 +31,7 @@ type CPU struct {
 	extraCycles int
 }
 
-func NewCPU(bus Bus) *CPU {
+func NewCPU(bus Bus) *CPU { // creates new cpu with bus
 	return &CPU{Bus: bus}
 }