Motorola Command One Manuel d'utilisateur télécharger pdf (Page 13)

Operating Environment

Motorola Application Development System 1-3

Figure 1-1 also illustrates how the ADS can be used as an emulator for a defined target

system whose hardware or software the user needs to debug. Here the user must provide

an access point on the target hardware for a 14-pin JTAG/OnCE interface cable, which

may be as simple as a 2-row × 7-set of test points. Chapter 3, "Functional Description,"

provides complete details of the pinout on the JTAG/OnCE interface cable.

The ADS software program provides routines the user needs to communicate with the

target DSP on the ADM or the target application. This program has a group of powerful

commands that enable the user to perform a variety of tasks. Operating system command

calls may be made from within the program, or temporary exits to the operating system

may be made without disturbing current set-ups with the target DSP.

For more information about the above paragraph, refer to the ADS User’s Manual which

can be found on the Development Tools CD included with the kit or at the following web

address:

http//:www.mot.com/SPS/DSP/documentation/tools.html

The Host interface board provides a physical link between the HOST computer and the

Command Converter via a parallel data and control bus cable. The parallel data path is

used for high-speed data transfers. The control bus signals enable the HOST computer to

reset, interrupt, and send commands to Command Converter simultaneously or

sequentially. The command converter then sends the reset, intercept, and various

commands to the ADM via the JTAG/OnCE cable.

The ADM is the basic platform for evaluating the DSP. It contains a DSP chip with a

JTAG/OnCE interface connector to configure it as a slave to the HOST computer or as a

stand-alone unit. In the slave configuration, the user controls the DSP processor and is

able to interrogate its status. This enables the user to debug hardware and software easily.

In the stand-alone configuration, a user program resident in ROM controls the ADM and

may be used as a prototype system for an end product.

1.2 Operating Environment

The ADS hardware and software is currently supported on the following three host

computers:

• PC-workstations

• Hewlett Packard HP700 workstations

• Sun-4 and compatible workstations

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Motorola Command One Manuel d'utilisateur Page 13