FS-977 Digi International, FS-977 Datasheet - Page 47
FS-977
Manufacturer Part Number
FS-977
Description
JTAG-BOOSTER FOR 386EX 3.3V
Manufacturer
Digi International
Series
Digi/FS Forthr
Type
FLASHr
Datasheet
1.FS-977.pdf
(56 pages)
Specifications of FS-977
Contents
Programmer and Associated Interface Software
For Use With/related Products
Intel 386EX, 3.3V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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- Download datasheet (175Kb)
2.12. Toggle CPU pins
Usage:
This command allows to test the hardware by blinking with LEDs or toggling
CPU signals. Faster signals can be generated by setting the delay option to
zero. This can be a very helpful feature to watch signals on an oscilloscope.
The signal on the defined pin has an duty cycle of 1/2: The level is 67% high and
33% low.
Please Note: Not every pin of the Intel 386EX may be specified as an output pin.
Options:
/PIN=pin_name
CPU pin to toggle. If the option /PIN= is not specified an error message occurs.
Most pins of the list in chapter 1.8 “Initialization file JTAG386.INI” can be used. If
you type /PIN= without any pin declaration a list of the CPU pins is displayed.
/DELAY=dddddd
Time to wait to next change of signal. This option can be adjusted to get
optimum signals for measures with the oscilloscope.
Default:
Example:
JTAG386 /BLINK /PIN=FLAG3 /DELAY=0
This example toggles the GP26 pin very fast which can be followed by the use of
an oscilloscope.
5
JTAG_386EXa.doc
dddddd=number base is decimal
5
JTAG386 /BLINK /PIN=pinname [optionlist]
/DELAY=10000
47
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