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Appendix C Functional Description C-19
C.1.9 Other RMA Storage Device X-Options
The system unit supports other RMA storage device X-options that can be installed
in the system unit in lieu of the CD-ROM drive. These storage device X-options
include the 4-GByte 4-mm DDS and DDS3 tape drives, the 12-GByte 4-mm DDS3
tape drive, the 8705XDX, 7-GByte tape drive, and the SLR5 QIC tape drive. For a
listing of all X-options, refer to the product guide.
C.1.10 Keyboard and Mouse, Diskette, and Parallel Port
The keyboard and mouse, diskette, and parallel port interfaces are managed by the
SuperIO component.
FIGURE C-6 shows keyboard, diskette, and parallel port interface
functionality. For a brief description of the SuperIO, see Section C.1.16, “SuperIO” on
page C-36.
C.1.10.1 Keyboard and Mouse Port
The keyboard and mouse are connected to an 8-pin DIN connector, located on the
motherboard, and to two serial ports on the SuperIO component. Each serial port on
the SuperIO ASIC provides 16-byte FIFO buffering. Data is asynchronously
exchanged with the keyboard and mouse at 1200 baud. Keyboard current is limited
to 700 milliamperes (mA) by a resettable fuse. Only the Sun Type-5 keyboard is
supported.