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・ vgqf
・ vgrep
・ vgx
・ vhdl
・ vhe
・ vhll
・ vhost
・ vhs
・ vi
・ vi improved
vic-20
・ victim cache
・ video
・ video adapter
・ video card
・ video compact disc
・ video compression
・ video conference
・ video conferencing
・ video dial tone


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vic-20 : FOLDOC
VIC-20
A home computer made by Commodore with a 6502 CPU, similar in style to the Commodore 64 and {Commodore C16}. The VIC-20 was released before the C64, and after the {Commodore PET}(?). It was intended to be more of a low-end home computer than the PET.
The VIC-20 had connectors for game cartridges and a tape drive (compatible with a C64). It came with five kilobytes of RAM, but 1.5 KB were used by the system for various things, like the video display (which had an unusual 22x20 char/line screen layout), and other dynamic aspects of the operating system (such as it was). The RAM was expandable with a plug-in cartridge which used the same expansion port as games. Port expander boxes were available to allow more than one cartridge to be connected at a time.
RAM cartridges were available in several sizes: 3K, 8K, 16K and 32K. The internal memory map was re-organised with the addition of each size cartridge, leading to the situation that some p


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