Diamond Systems HERCULES-EBX HRC400-5A128, Руководство пользователя, Страница: 52 / 123

Hercules-EBX CPU User Manual V1.02 Page 52
8.3 PS/2 Ports
Hercules-EBX supports 2 PS/2 ports: one dedicated for keyboard and the other dedicated for
mouse function. The two PS/2 ports are accessible via a cable assembly (DSC#
698022 )
attached to J6. Support for these ports is independent of, and in addition to, mouse and keyboard
support via the USB ports.
8.4 USB Ports
Hercules-EBX contains 4 USB Ports (referenced as “USB0” through “USB3”). All four USB ports
are accessible via cable assemblies attached to J22 (“USB0” and “USB1”) and J21 (“USB2” and
“USB3”). One of these ports, “USB1”, is also available via on onboard vertical USB connector
J23, located on the top-left corner of the board. J23 should only be used when “USB1” on J22 is
not used – do not connect USB devices into both connectors or neither device will function.
USB support is intended primarily for the following devices (although any USB1.1-standard device
should function without issue):
•
Keyboards
•
Mice
•
USB Floppy Drive (NOTE : this is required for “Crisis Recovery” of boot ROM)
•
USB flash disks
The BIOS fully supports the USB keyboard during BIOS initialization screens, as well as legacy
emulation for DOS-based applications.
The USB ports can be used for keyboards and mice at the same time that the PS/2 keyboard and
mouse are plugged in – multiple devices of the same type are supported, although this can
obviously get rather confusing.