MVME2100 User Interface Devices
http://www.motorola.com/computer/literature
2-5
2
Universe ASIC includes both a global and a local reset driver.
When the Universe operates as the VMEbus system controller, the reset
driver provides a global system reset by asserting the VMEbus signal
SYSRESET*.
A SYSRESET* signal may be generated by the RESET switch, a power-
up reset, a watchdog timeout, or by a control bit in the Miscellaneous
Control Register (MISC_CTL) in the Universe ASIC. SYSRESET*
remains asserted for at least 200 ms, as required by the VMEbus
specification.
The
DEBUG
port may be used for connecting a terminal to the MVME2100
to serve as the firmware console for the factory installed debugger,
PPCBug. The port is configured as follows:
❏
8 bits per character
❏
1 stop bit per character
❏
Parity disabled (no parity)
❏
Baud rate = 9600 baud (default baud rate at power-up)
After power-up, the baud rate of the
DEBUG
port can be reconfigured by
using the debugger’s Port Format (PF) command. Refer to Chapters 5 and
6 for information about the PPCBug.