The SG-1000 was released simultaneously with a home computer version with almost identical hardware, the SC-3000. It seems to have been cloned from the ColecoVision hardware.
Models: SG-1000 (console), SG-1000 II (console), SC-3000 (computer). CPU: Z80, GPU: TMS9918, audio: SN76489
ocdgamer.rb:335:output_game_list( 16 games, mode:largescreen, tag id:88, sortby:title, url_arg_prefix:, output_list_selection:true) output_large_game_box(3728) output_large_game_box(3736) output_large_game_box(3724) ... execution time: output_game_list: 0.00s