• we need to start by literally simulating the RAM that we are going to be able to operate on
  • luckily in CHIP-8, it’s very simple
  • 4KB literally means 4096 bytes
  • represented as a uint8_t array of size 4096 in C
• creating a ChripMemory struct to wrap around this memory
  • benefits: creating abstraction above the memory to avoid unrestricted access to the actual array
• memory regions (from 0x000 to 0xFFF):
  • 0x000 to 0x1FF → CHIP-8 interpreter (not written to)
  • 0x050 to 0x0A0 → storage space for built in characters (refer to fonts)
  • 0x200 to 0xFFF → instructions from ROM

• because our PC needs to point to an index in this block, we immediately treat each array index as a byte in the memory
  • so the PC starts at 0x200 as discussed above