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week1/day1/anki_cards.md

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+# Day 1: C & Reverse Engineering Anki Cards
+
+## Card 1
+**Front:** In x64 Assembly, what does `DWORD PTR` indicate about the size of the data?
+**Back:** It indicates a 32-bit (4-byte) value, typically used for an `int` in C.
+
+## Card 2
+**Front:** Translate the C code `int x = 10;` into a conceptual x64 assembly instruction.
+**Back:** `mov DWORD PTR [rbp-offset], 0xa`
+
+## Card 3
+**Front:** Why can't a CPU usually add two memory locations directly (e.g., `add [mem1], [mem2]`)?
+**Back:** Architecture constraints. It must follow the **Load-Modify-Store** pattern: move values into registers, perform the addition, and store the result back.
+
+## Card 4
+**Front:** What is the relationship between `RAX` and `EAX`?
+**Back:** `EAX` is the lower 32-bit half of the 64-bit `RAX` register.
+
+## Card 5
+**Front:** Match the C type to its Assembly size prefix:
+1. `char`
+2. `short`
+3. `int`
+**Back:** 
+1. `BYTE PTR` (1 byte)
+2. `WORD PTR` (2 bytes)
+3. `DWORD PTR` (4 bytes)
+
+## Card 6
+**Front:** What does the `RBP` register represent in the context of local variables?
+**Back:** The **Base Pointer**. It serves as a fixed reference point on the stack from which local variables are accessed via offsets (e.g., `[rbp-4]`).