GPIO pins problem in Cyclone III kit

it is called

Nios II Embedded Evaluation Kit (NEEK), Cyclone III Edition

the demo board has some keys and LEDs , this components' pins may be used as input or output pins.

if you need more pins, you can design a daughter PCB with 180 pins HSMC connector. connect them, then the daughter PCB will extends the GPIO pins number.

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As far as I'm aware of, the only GP I/Os of the 3C25 starter board are provided through the HSMC connector, which is interfacing the LCD Multimedia daughtercard in NEEK. So I wonder, which 8 signals you are counting as GPIO with this kit? According to the block diagram, there are none. But may be I missed something?

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it actually has a debug connector (10 pins) on the LCD Multimedia HSMC board , 2 of them are Vcc and Gnd, so the remaining is 8 pins only :(

@ johnboat

Thank you for your help, but i don't know how to use the HSMC bus, it is connected to the LCD Multimedia HSMC board physically

john is suggesting that you disconnect the LCD daughter board from the C3 board and design a new daugher board with the GPIOs you need.

The HSMC pin out is described by an Altera spec and the Cyclone III starter kit's documentation.

http://www.altera.com/literature/ds/hsmc_spec.pdf

There a couple of boards that may suit you, though.

http://www.bitec-dsp.com/hsmc_proto.html

http://www.nialstewartdevelopments.co.uk/products.htm

@rbugalho and johnboat

thank you for your help

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it actually has a debug connector (10 pins) on the LCD Multimedia HSMC board

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I don't see any. There's a 10-pin-JTAG connector. It's only purpose is to reprogram the MAX II logic device, if neccessary.