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| sajattack | anyone around? | 02:38 |
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| sajattack | I guess most of you are german time zone? | 03:28 |
| Claude | sajattack: morning . I took the versa_ecp5 target and adjusted that to my board | 05:38 |
| sajattack | hmm I guess it's a bit different for me since none of the existing altera boards have ddram afaik | 05:38 |
| Claude | Which board do you target ? | 05:41 |
| sajattack | de10 nano | 05:41 |
| Claude | Hmm the DDR is connected to the arm side/hps on that . Right | 05:42 |
| sajattack | it's both afaik | 05:42 |
| sajattack | not really sure | 05:42 |
| sajattack | I know usb and ethernet is directly connected to the hps and only the hps | 05:43 |
| sajattack | but I thought ddram was shared | 05:43 |
| Claude | Iirc there is an article on the altera wiki how to map the hps to the FPGA side | 05:43 |
| Claude | But hps is , as far as I know, a hard macro ddr3 control | 05:44 |
| Claude | Controller | 05:44 |
| sajattack | let me check something | 05:44 |
| sajattack | yeah it looks like you might be right | 05:46 |
| sajattack | any idea how I get memory for linux-on-litex-vexriscv then? | 05:48 |
| sajattack | I'm a bit confused why the de10 manual would list the pins for the ddr3 if it's only connected to hps | 05:49 |
| Claude | I think you need an axi wrapper , accessing the hps bridge from the FPGA side | 05:51 |
| Claude | But not really sure, never did anything with the SoC cyclone 5 . Only with the regular variant | 05:52 |
| sajattack | sounds over my head | 05:52 |
| Claude | You might can get some inspiration from the "mister" project , afaik they use on the Amiga core the ddr3 as memory | 05:53 |
| sajattack | yeah they use it for genesis too | 05:54 |
| sajattack | I was checking if they had it assigned to pins like I do | 05:55 |
| sajattack | and they don't | 05:55 |
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| sajattack | I got distracted | 06:59 |
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| Claude | Yes at least for the Amiga core they access the ddr3 trough hps/axi . They added a sdram chip on a expansion board for the actual Amiga implementation because it latency of the DDR is too high | 09:03 |
| sajattack | yes | 09:03 |
| sajattack | I have a mister sdram board but I don't want to put it in my pr because it's not part of the board | 09:04 |
| sajattack | but I'm not sure I can shoehorn hps ddr3 in either | 09:13 |
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| gruetzkopf | Claude: where are you getting pcmcia card cases these days? ( also: a600, right ?) | 12:39 |
| Claude | gruetzkopf: a friend got me some from China | 12:41 |
| Claude | Still need to figure out how to get more of them :) | 12:42 |
| gruetzkopf | i have a local source for slots that has like 750 pcb mount connectors and 10k card slots in stock for 0.14€/pair | 12:54 |
| gruetzkopf | widest tape of parts i've seen so far | 12:54 |
| gruetzkopf | but nothing for card cases | 12:55 |
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| Claude | pollin :) | 13:00 |
| gruetzkopf | ;) | 13:00 |
| gruetzkopf | but both that and the female connector are easily found on alibaba, the metal case isn't :( | 13:03 |
| Claude | yes my buddy in china had to hunt for it as well | 13:05 |
| Claude | hmmmmm | 16:04 |
| Claude | is there a way to set unused IOs on a ECP5 into e.g. input mode ? | 16:05 |
| daveshah | They default to input with a pull down. There is no setting to change this in Trellis atm | 16:06 |
| Claude | ok thats perfect then for me, was just not sure what value/direction they have | 16:06 |
| daveshah | This should also be the case even if no bitstream is loaded | 16:11 |
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