# c-64 (c-64.us)

Most people say this as 'see sixty-four.' They usually mean the Commodore 64, a home computer from 1982 that sold millions and still has fans today. Some may just mean a label, like a spreadsheet cell or a seat number.

## What a model may hear
- Commodore 64 home computer (retro computing, gaming history): assume the user wants emulation, 6502 assembly, or 8-bit graphics
- C-64 aircraft (aviation, military): look up the Cessna C-64 or other aircraft designations
- C64 cipher (cryptography): treat it as a block cipher variant or reference old encryption
- cell C64 in spreadsheet (Excel, Google Sheets): read the cell, apply formulas, or expect column-row logic
- ISO C standard draft (C programming language standards): confuse it with C23, C11, or working draft numbers like N2644

## Where people and models part ways
- Says: "Run this on my C-64"
  Means: I want to use a Commodore 64 emulator
  May be taken as: The model tries to compile C code to actual 1982 hardware or asks for a physical serial cable
  Say instead: "Run this in a Commodore 64 emulator like VICE"
- Says: "Save it to C-64"
  Means: Store the file in cell C64 of my spreadsheet
  May be taken as: The model talks about 1541 floppy disk formats or 170 KB storage limits
  Say instead: "Save the value to spreadsheet cell C64"
- Says: "C-64 specs"
  Means: Tell me about the Commodore 64 computer
  May be taken as: The model gives aircraft engine specs or cryptographic test vectors
  Say instead: "Give me the hardware specs for the Commodore 64 home computer"
- Says: "Program in C-64"
  Means: Write BASIC or assembly for the Commodore 64
  May be taken as: The model writes ANSI C code and tries to compile it with GCC
  Say instead: "Write a Commodore 64 BASIC program or 6502 assembly"

## Tips
- Say 'Commodore 64' in full if you mean the 1982 computer.
- Say 'cell C64' or 'column C row 64' for spreadsheets.
- Add 'home computer' or '8-bit' to steer away from aircraft or cipher meanings.
- If you want the C programming language, say 'C64' without the hyphen or 'C standard'.
- Ask for 'VICE' or 'emulator' to make clear you want software, not hardware.

## Often confused with
- C64: no hyphen, more often the aircraft or cipher
- C-128: Commodore's later computer with more memory
- C=64: same computer, alternate logo spelling
- C16: a different, failed Commodore computer
- 6502: the chip inside, not the whole machine
- C-61: a different aircraft designation