How to Upgrade a Commodore 64

The 1541 and 1571 floppy drives read 5.25-inch disks.

At its base configuration, the Commodore 64 computer only runs cartridge-based software and cannot save files. These capabilities remain adequate for programming experiments, playing certain games and conducting a few other basic computing tasks. However, when you upgrade a Commodore 64, the system can read floppy disks, dial phone numbers, load programs more quickly, run graphical user interfaces, or exchange data with another computer. It's even possible to add a hard drive to the Commodore. Most Commodore 64 upgrade options require little effort to install, with no tools necessary.

Things You'll Need

• Expansion cartridge or device

Instructions

1. Choose an upgrade to obtain. Desirable options include the 1571 disk drive, a fast load cartridge or a printer interface. Avoid the 1541 floppy drive. According to "The Secret Guide to Computers," the 1541 floppy drive operates sluggishly and often fails. Some Commodore VIC-20 devices also will work in the model 64, such as the VICModem cartridge.

2. Purchase the upgrade cartridge or device. Ensure that the seller includes any necessary wires, such as the cable that runs from a floppy drive to the Commodore 64. Some devices have the necessary cables built-in, like cassette drives.

3. Connect the device to the Commodore 64. If you are installing an upgrade cartridge or cassette drive, plug it into one of the wide, short slots on the back of the Commodore. It should only fit one slot. Most external devices, like disk drives and printers, will connect to a round port on the back.

4. Switch on the upgrade device, if it has a power switch. According to the "Commodore 1541 Disk Drive User's Guide," floppy drives shouldn't have any disks in them to start. Turn on the Commodore 64 computer after all connected devices have been powered on. Always power them in this order to prevent damage. If the computer doesn't boot up, turn everything off and verify that you inserted the cable or upgrade cartridge firmly.

5. Test the device. Depending upon the upgrade, you might need certain software or blank media. If necessary, conduct research on the specific device to ensure that you used the correct settings or commands. A nonworking device may need repair or a new fuse.

Tips & Warnings

• You can install two disk drives in series, but not two cassette drives.

• Always turn off the Commodore 64 before connecting or disconnecting any components.

References

• "The Secret Guide to Computers"; Russ Walter; 1993.
• Project 64: Commodore 1541 Disk Drive User's Guide