Concept

Sega TeraDrive

Résumé

The TeraDrive is an IBM PC compatible system with an integrated Mega Drive, developed by Sega and manufactured by IBM in 1991. The TeraDrive allowed for Mega Drive games to be played the same time as the PC section is being used, as it is possible for the Mega Drive and PC hardware to interact with each other. The system was only released in Japan. Sega hoped that integrating the then popular Mega Drive console into an IBM PC would attract potential customers wishing to purchase a PC, but the system proved unpopular and was a commercial failure. Sega Mega Drive#CPU One of the main processors used for the system is the Intel 80286, which was released in 1982. However, by the time the TeraDrive was released in 1991, this processor was almost 10 years out of date - the more powerful 25 MHz Intel 80486 had been released in 1989, making the TeraDrive's central processor 2 generations behind its time. The system also contains a Motorola 68000 and a Zilog Z80, the same processors which were used in the Mega Drive, that ran at 7.67 MHz and 3.58 MHz respectively. The machine's front panel ports included two Mega Drive pad ports which were similar in design to 9-pin male serial ports, and 2 PS/2 ports to the right side of the unit to accommodate for the mouse and keyboard. The system also contained several ports to its rear. In order from left to right: 9-pin male serial port, 25-pin parallel port for connection to a printer, stereo RCA jacks and composite NTSC video output for connection to a TV, analogue RGB for monitor connection, and a 2nd 9-pin male serial connector labelled "EXT", similar to that found on the rear of an original Mega Drive base unit. The motherboard also had a spare ISA slot available for expansion, with a hole at the rear of the unit to accommodate this. Its interface consisted of a start-up menu with several options, including a , DOS, a clock and Mega Drive mode. The machine included IBM drivers bundled on a floppy disk, which enabled properly written software to operate in the machine's RAM and then run on the native Mega Drive hardware.

Source officielle

https://fr.wikipedia.org/wiki/Sega_TeraDrive

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