While the original name of what much of the world knows as the NES was the Nintendo Family Computer, or Famicom for short, it was very rarely used as a family computer. Sure, there was a basic cartridge and an add-on keyboard sold in Japan, but it was always a sideshow to the games.
Nintendo recognized that when they brought their Entertainment System overseas. Most of the various famiclones — which date back to the mid-80s — are the same. BIT in Taiwan had a different idea: their Bit 79 would be a full home computer. Picture a C=64 that plays Nintendo games, and you might not be too far off. [Inkbox] tells the full story in his latest YouTube video, and it’s a must-watch for anyone interested in the history of 8-bit machines that are totally unknown in the West.
BIT were both game makers and system cloners; you may even have seen one of their NES or Atari games, as they were exported widely. By 1989 they’d already gone through a surprising number of Famicom clones, but those were pure clones and just played games. The Bit79 is obviously different — for one, it’s got a built-in keyboard in a wedge case. Apparently a pretty good one at that. For another, it starts with a bootloader that lets you choose between BASIC on ROM and loading the cartridge. For a third, it’s got a full 8K of RAM, quadrupling the Famicom’s offering– plus an additional 2K for the PPU, in what you might consider an early example of video RAM. Both CPU and PPU are knockoff chips made in Taiwan by UMC. The system even has what looks like a DB25 connect a printer. There’s also an expansion port, but no evidence that add-ons were ever sold, despite reports of a 64K memory add-on.
Back to the BASIC ROM for a moment– it’s not Famicom BASIC, as was clear in the manuals. [Inkbox] dumped the ROM to find that it is actually AppleSoft BASIC, of all things. That’s not only an odd bit of piracy, it’s also a big miss, since Apple’s BASIC doesn’t have any commands to make use of the PPU the way Famicom’s version does. POKING the registers during the vBlank integer is apparently not an easy thing to do. Perhaps that’s why we’ve never heard of this machine — well, that, and the fact we’re not located in East Asia where it was sold.
While the Bit79 didn’t sell particularly well, apparently it inspired a whole wave of “educational computer” famiclones in 1990s China that are largely unknown to the English-speaking world, making it an important part of computer history.
While BIT Corp is long gone, if you want to play around with their great experiment in turning a famiclone into a home computer, an emulator is available online, and the ROMs are preserved on the Internet Archive thanks to [InkBox].
Thanks, too, to [Stephen Walters] for the tip.
This articles is written by : Nermeen Nabil Khear Abdelmalak
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