No problem at all. I like talking about stuff like that, so I don't mind "repeating" and frankly some topics should be brought up multiple times.

Wii: 1345 2773 2048 1586 | PS3: ArmchairArcade
Bill Loguidice, Managing Director | Armchair Arcade, Inc.

I have the upgraded model in the series: http://www.armchairarcade.com/neo/node/1470

The joystick is removable on the SV-318. On the 328, besides things like extra memory and a real keyboard, it replaced the joystick/cursor control with a numeric keypad. The MSX specification was actually inspired by the 328, not the 318, though they're functionally the same. Most software was released on cassette for the 318/28, but a few cartridges were also released. Spectravideo obviously was famous for their joysticks and making Atari 2600 and ColecoVision games, among others. They also released an expansion module for their computers to allow them to play ColecoVision games.

The 318/328 are not MSX compatible obviously, created before the specification was standardized. The Spectravideo 728 was an updated version of the 328 that was in fact MSX 1 compliant. That system was not released in North America, only the 318/328.

The 318/328, particularly the 328, is a well-built system with a strong BASIC implementation that makes good use of available memory. It's a capable platform, along the lines of the ColecoVision, TI-99/4a and MSX 1 systems. Unfortunately, the software was pretty much first party (as was the case for many second or third tier systems) and fairly mediocre.

Wii: 1345 2773 2048 1586 | PS3: ArmchairArcade
Bill Loguidice, Managing Director | Armchair Arcade, Inc.