Disc Drive emulation: Difference between revisions
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=CD= | =CD= | ||
==TurboGrafx-CD and CD-ROM²== | |||
:''[[Wikipedia:TurboGrafx-16#Add-ons|TurboGrafx-CD/CD-ROM² and Super CD-ROM²]]'' | |||
The System Card 1.0 was included with the launch shipments of the CD-ROM² Interface Unit in 1988 (which did not include the actual CD drive, by the way; that had to be bought separately. ''Altered Beast'' requires it as it hangs with the newer BIOS versions, and someone reported an unspecified problem with ''Populous'' as well. | |||
The System Card 2.0 was included in later shipments of the CD-ROM² System sometime in 1989 (around the time they started selling the Interface Unit and CD drive as a set). It served as the basis for the TurboGrafx-CD BIOS, which features a different title screen to go along with the different naming of the platform and its add-on in the US. Unlike HuCards, CD-ROM² discs are all region-free. | |||
The System Card 2.1, released in 1990 exclusively in Japan, was the first System Card that was sold as a standalone, intended to be a replacement for users who had their original System Cards lost or damaged. Its only new feature was its ability to auto-detect disc changes. | |||
The System Card 3.0 was launched in Japan in 1991. It was initially available built-in with the PC Engine Duo, a model of the console with an integrated CD drive, but was quickly offered as an upgrade to owners of the original CD-ROM² System in the form of the Super System Card, and later as an updated model of the add-on itself known as the Super CD-ROM² unit. The later models of the Duo (Duo-R and Duo-RX) also have this BIOS built-in. Version 3.0 increases the amount of buffer RAM from 64KB to 256KB, hence the addition of the word Super. Games that required this BIOS, which are labelled Super CD-ROM² discs, will display an incompatibility notice when loaded on a prior System Card. | |||
This BIOS was released in the US in 1992 and was similarly offered built-in with the Turbo Duo (the US version of the PC Engine Duo) or as an upgrade for the TurboGrafx-16/CD in the form of the Super System Card (which was available primarily as a mail order). | |||
==Atari Jaguar CD peripheral== | ==Atari Jaguar CD peripheral== | ||
The [https://en.wikipedia.org/wiki/Atari_Jaguar_CD Atari Jaguar CD] peripheral has a double-speed (2×) drive and built-in VLM (Virtual Light Machine) software by Jeff Minter, using a spectrum analyzer for a sophisticated video light show for audio CDs. | The [https://en.wikipedia.org/wiki/Atari_Jaguar_CD Atari Jaguar CD] peripheral has a double-speed (2×) drive and built-in VLM (Virtual Light Machine) software by Jeff Minter, using a spectrum analyzer for a sophisticated video light show for audio CDs. | ||