05:13 <d1b2> <Gabriel> This doesn't seem to be working. Could I get a sanity check? py m.submodules.start = Instance( 'SB_SPRAM256KA', i_ADDRESS = self.index, i_DATAIN = data_in, i_MASKWREN = Const(0b1111, 4), i_WREN = self.write, i_CHIPSELECT = 1, i_CLOCK = ClockSignal("px"), i_STANDBY = 0, i_SLEEP = 0, i_POWEROFF = 0, o_DATAOUT = data_out )

05:22 <tpw_rules> https://github.com/tpwrules/tasha_and_friends/blob/master/tasha/gateware/icebreaker/spram.py

05:22 <tpw_rules> looks like i_POWEROFF is actually inverted. it should be 1 to make the RAM go

05:22 <d1b2> <Gabriel> oh lol I hope that's it

05:22 <tpw_rules> "When POWEROFF is driven high (1’b1), the SPRAM is powered on."

05:26 <d1b2> <Gabriel> That was one of like five things wrong. But it's working now, thanks!

17:56 <colejohnson66> Hi everyone! Question: say I want multiple Layouts to be passed around as a generic Signal. For example, the two MSB of a signal define its type (tag bits of sorts), then the other, say, 32 bits are an opaque blob that can be turned back into a Record. Then I pass around this 34 bit signal and the receiver can go: "the tag is b00, so this is

17:56 <colejohnson66> LayoutA". Is there a way to do this?

17:57 <colejohnson66> Would I define a Record for each Layout, then set the Record equal to the bits from the blob?

17:59 <whitequark> there's an open RFC for this

18:05 <colejohnson66> I found it. A union; that's what they're called

18:08 <colejohnson66> Is there currently any way to do such a thing right now?

18:08 <colejohnson66> Would I just have to write a bunch of subscripted `.eq` statements?

18:08 <colejohnson66> Would I just have to write a bunch of subscripted `.eq statements?

18:40 <whitequark> not right now, sorry

18:40 <whitequark> if you test the RFC you would shorten the time before its implementation is merged, though

18:40 <whitequark> so I'd like to encourage you to do that

18:51 <colejohnson66> will do

19:01 <colejohnson66> That literally cut my filesize in half