Stardust — Starquake Atari XL/XE → VBXE Sprite Port

Port hi-resolution colour sprites from the C64 version of Starquake to the Atari XL/XE version using VBXE hardware.

Project Structure

Starquake (v2).xex          — Vanilla Atari XL binary (no loader)
disasm/
  starquake_v2_mads.asm     — Full disassembly (MADS syntax)
  starquake_v2_listing.asm  — Disassembly with address/hex listing
docs/
  DISASSEMBLY_NOTES.md      — Memory map, title screen analysis
tools/
  parse_xex.py              — XEX segment parser

Key Findings (v2 binary)

• No copy protection — clean 4-segment XEX
• Code loads at $2300-$BBFF, relocated to $0580-$9EFF at runtime
• Title screen is ANTIC mode F hires bitmap (320×192, GR.8)
• Screen at $A1F0, display list at $395E
• 4 DLIs for colour changes across the screen
• Colours: green/grey on black (COLPF1=$CA, COLBK=$00)