
Development Support
Motorola Modular Development System (MMDS11)
MC68HC11E Family
—
Rev. 4
Technical Data
MOTOROLA
Development Support
271
A.5 Motorola Modular Development System (MMDS11)
The M68MMDS11 Motorola modular development system (MMDS11) is
an emulator system for developing embedded systems based on an
M68HC11 microcontroller unit (MCU). The MMDS11 provides a bus
state analyzer (BSA) and real-time memory windows. The unit
’
s
integrated development environment includes an editor, an assembler,
user interface, and source-level debug. These features significantly
reduce the time necessary to develop and debug an embedded MCU
system. The unit
’
s compact size requires a minimum of desk space.
The MMDS11 is one component of Motorola
’
s modular approach to
MCU-based product development. This modular approach allows easy
configuration of the MMDS11 to fit a wide range of requirements. It also
reduces development system cost by allowing the user to purchase only
the modular components necessary to support the particular MCU
derivative.
MMDS11 features include:
Real-time, non-intrusive, in-circuit emulation at the MCU
’
s
operating frequency
Real-time bus state analyzer
–
8 K x 64 real-time trace buffer
–
Display of real-time trace data as raw data, disassembled
instructions, raw data and disassembled instructions, or
assembly-language source code
–
Four hardware triggers for commencing trace and to provide
breakpoints
–
Nine triggering modes
–
As many as 8190 pre- or post-trigger points for trace data
–
16 general-purpose logic clips, four of which can be used to
trigger the bus state analyzer sequencer
–
16-bit time tag or an optional 24-bit time tag that reduces the
logic clips traced from 16 to eight
Four data breakpoints (hardware breakpoints)