Keyboard And Mouse Port; Diskette Drive And Parallel Ports; Diskette Port - Sun Microsystems Sun Blade 1000 Service Manual

C.1.11.1

Keyboard and Mouse Port

The keyboard and mouse are connected to the USB connectors, located on the
motherboard. Keyboard current is limited to 700 milliamperes (mA) by a resettable
fuse.
Keyboard
USB ports
Diskette drive
Mode select
Density sense
FIGURE C-10
C.1.12

Diskette Drive and Parallel Ports

The diskette drive and parallel port are managed by the SuperI/O component.
C.1.12.1

Diskette Port

The diskette port is supported by a diskette controller, located on the SuperI/O
ASIC. The diskette controller is software compatible with the DP8473, DP765A, and
the N82077 diskette controllers. The SuperI/O ASIC is compatible with
perpendicular recording drives (2.88-Mbyte formatted diskettes) and standard
diskette drives. The diskette controller handles data rates of 2Mbit/sec., 1Mbit/sec,
500 Kbits/sec, and 250 Kbit/sec.
C-32 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002
Mouse
SuperI/O
PCIO-2
ASIC
EBus
controller
Keyboard and Mouse, Diskette, and Parallel Port Functional Block Diagram
Parallel
port
1
Serial
port
2
Diskette
Parallel port
DB-25
EMI
filter
Diskette drive
edge connector