Amiga 500
Commodore
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Amiga A570
The Amiga A570 is a single-speed external CD-ROM drive for the Amiga 500 computer launched by Commodore in 1992. It was designed to be compatible with Commodore CDTV software as well as being able to read ordinary ISO 9660 CD-ROM discs. The original designation was A690, and pre-production devices under this name were delivered to developers. The A690/A570 used a proprietary Mitsumi CD-ROM interface. It contained a header for an internal 2 Megabyte fast memory expansion, but this proprietary memory module was never put into production and only a few rare developer examples of this exist today. The A570 provided the Amiga 500 with a CD-ROM drive, but obviously was not useful to improve the A500 with modern features mainly dealing with enhanced graphics, even if there was a common desire for Amiga users to upgrade the A500 to something similar to the Amiga 1200, which was launched just a few months after the A570. It is also notable that by the time of the A570's launch, the A500 computer had already been discontinued. The Amiga 600 (ostensibly the A500's direct replacement) was, like the later A1200, incompatible with this external drive. Thus, Commodore were in the position of having launched a CD-ROM drive for a discontinued machine, while a similar device was unavailable for their current low-end Amiga. This move by Commodore marketing department could be justified[by whom?] by the fact that millions of A500 systems existed already, along with considerable demand for Commodore to release a more advanced data storage solution. The device (like the Amiga A590 hard disk drive that was sold by Commodore for the A500) had no through connector, so it was not possible to connect both an A590 and an A570 to the computer at the same time. The A590, despite having an XT IDE hard disk, also carried a SCSI interface that allowed third-party hard disks and CD-ROM drives to be fitted. While these drives did not carry CDTV emulation, the lack of success of this format did not restrict this option.