You had a tape drive for the Atari 2600 video game system that has no video RAM, 128 bytes of system RAM, a video chip not driven by the ANTIC that requires the CPU to program it for each line, and a crippled 6502 that addresses 4Kbytes of ROM max?
"The Starpath Supercharger (originally called the Arcadia Supercharger) is an expansion peripheral cartridge created by Starpath, for playing cassette-based proprietary games on the Atari 2600 video game console.[2][3][4][5]
The device consists of a long cartridge with a handle on the end, and an audio cassette cable. It adds 6 KB to the Atari 2600's 128 bytes of RAM (increasing it 49-fold to 6,272 bytes of RAM)..."