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Altera_Forum
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9 years ago

Trouble interfacing FLASH pins to GPIO (retro game related)

Hey all, Just got an Altera DE1 dev board using the Cyclone II, and I'm working on a simple test that is literally just connecting the FLASH chip to the GPIO_0 bus. I'm not performing any logic...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

The test game won't boot onto the console. When I tie the LEDs to the FL_DQ lines I don't see any indication that they're going hi or low.

I haven't tried signaltap or sims yet, no. I've done this sort of thing with CPLD chips before with no trouble, but only controlling address and control pins - never with data pins. So that's why I'm hung up. It looks like it SHOULD work, but it doesn't.

Any chance I need to things to high Z until the console boots? I tried that with using SNES_RST as an enable on all the FL pins but that didn't seem to do anything different either...