Memory Requirements; Booting And Restarting 167Bug - Motorola MVME167 Series Installation Manual

Memory Requirements

The program portion of 167Bug is approximately 512KB of code,
consisting of download, debugger, and diagnostic packages and
contained entirely in EPROM. The EPROM sockets on the
MVME167 are mapped starting at location $FF800000.
167Bug requires a minimum of 64KB of contiguous read/write
memory to operate.
The ENV command controls where this block of memory is located.
Regardless of where the onboard RAM is located, the first 64KB is
used for 167Bug stack and static variable space and the rest is
reserved as user space.
Whenever the MVME167 is reset, the target PC is initialized to the
address corresponding to the beginning of the user space, and the
target stack pointers are initialized to addresses within the user
space, with the target Interrupt Stack Pointer (ISP) set to the top of
the user space.
At power up or reset, all 8KB of memory at addresses $FFE0C000
through $FFE0DFFF is completely changed by the 167Bug initial
stack.

Booting and Restarting 167Bug

This section covers the following tasks:
Starting up 167Bug
Autoboot
ROMboot
Network boot
Restarting the system
Booting and Restarting 167Bug
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