# vic-20 (vic-20.us)

The VIC-20 was a home computer Commodore sold in 1980. Many people had one as their first computer. They remember it fondly as a machine for games and learning BASIC.

## What a model may hear
- Commodore VIC-20 hardware (retrocomputing, emulation): Assume the user wants emulator settings, memory maps, or 6502 assembly help
- VIC video chip (8-bit computer engineering): Discuss the MOS Technology VIC chip's registers and video modes
- VIC-20 domain or URL (web infrastructure, DNS): Parse it as a domain name, check TLD rules, or discuss .us registration
- model number pattern (product naming conventions): Compare to other '20' suffix products or extract version information

## Where people and models part ways
- Says: "My vic-20 won't start"
  Means: Their old computer or emulator is broken
  May be taken as: The model may give hardware repair steps for a physical machine when the user runs an emulator
  Say instead: "My VIC-20 emulator shows a black screen"
- Says: "How much memory did the vic-20 have"
  Means: They want a simple historical fact
  May be taken as: The model may dump technical memory layout details with bank switching and expansion cartridge addresses
  Say instead: "How much RAM did the stock Commodore VIC-20 ship with"
- Says: "vic-20 games"
  Means: They want to know what games existed or where to find them
  May be taken as: The model may assume they want to write a game in 6502 assembly for the platform
  Say instead: "Where can I find and play VIC-20 games today"
- Says: "Is the vic-20 worth anything"
  Means: They want to know collector value
  May be taken as: The model may discuss the technical worth or historical significance instead of market prices
  Say instead: "What do used Commodore VIC-20 computers sell for"

## Tips
- Say 'Commodore VIC-20' not just 'VIC' to avoid the video chip sense
- Mention 'emulator' or 'real hardware' so the model knows which world you are in
- Ask for 'history' or 'collector value' explicitly when that is what you want
- Say 'BASIC' or 'assembly' if you want programming help
- Name the emulator software if you want setup help

## Often confused with
- VIC-II: the later chip in the C64, not the VIC-20
- C64: Commodore's next computer, more popular
- PET: Commodore's earlier business computer
- VC-20: German market name for the same machine
- VIC-1001: Japanese market name for the same machine
- VIC: just the chip, not the whole computer