WaveForms missing inputs for ROM logic

[FelixJ]

Hi!

I'm using an Analog Discovery 2 with an up-to-date version of Waveforms:

WaveForms 3.18.1 64-bit Qt5.12.9 Windows 10 (10.0)
Connected to Discovery2 SN:210321AA2845 configuration 1
Qt version: 5.12.9 / 5.12.9

I was trying to setup a signal using the pattern generator and ran into an issue with the ROM logic setup. I can only add the DIO 0-9 as inputs, while I have all DIO 0-15 available as outputs. As you can see in the picture I have an empty pattern generator, so nothing is defined yet:

For the outputs it works fine:

Everything else works well so there seems to be no connectivity issue between the AD2 and the PC. 

 

Thanks in advance for any help!

[attila]

Hi @FelixJ

For ROM logic the first DIOs are use as address bits with a width of custom buffer size. For the first/default device configuration with 1Ki Patterns buffer the address space is 10bits so DIO 0 to 9 can be used as input for the ROM logic. With the 4th and 7th 16Ki DIO 0-14

https://digilent.com/reference/waveforms_-_rom_logic

[infield]

Hi attila,

is it possible to change the available pins for the ROM logic in the Digital Discovery 3?

At the moment I can only use DIO24-38 as input and DIO24-39 as output. I would like to use DIN0-7 as inputs and any DIO for ouput.

In the device manager I can only see one configuration for the Digital Discovery (16 x 32 Ki).

Thank you for your help.

[attila]

Hi @infield

Unfortunately only the DIOs can be controlled from Patterns and used by ROM logic.

[infield]

Okay, thank you!