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VIC-20

VIC-20 · 1980–1985 · desktop

Specifications

Cpu: MOS Technology 6502A, 1.02 MHz
Ram: max: 32 KB with a Super Expander or third-party memory cartridge in the expansion port · base: 5 KB (about 3.5 KB usable after ROM and system overhead)
Ports: Expansion/cartridge port · Serial IEC bus (disk drive, printer) · 2× joystick/control ports · Cassette port · RF and composite video out · User port
Display: VIC chip: composite/RF video, 22×23 text, 176×184 graphics, 16 colors
Storage: base: Commodore Datasette cassette recorder (no internal storage) · options: Commodore 1540/1541 5.25" floppy drive over the serial IEC bus
Os Support: latest: Commodore BASIC 2.0 in ROM · shipped: Commodore BASIC 2.0 in ROM
Release Price: $299.95

Upgrade paths

RAM

32 KB via plug-in memory expansion cartridges (3 KB, 8 KB, and 16 KB modules, commonly stacked) · The expansion port on the left side takes RAM cartridges directly; no disassembly needed. Bank switching quirks mean not all combinations map cleanly into BASIC's address space.

~$100 for a 16 KB expansion at the time

EASY