| adjtm_ | mntmn, how many layer the reform main board has? | 00:11 |
|---|---|---|
| adjtm_ | I suppose that less than the SOM | 00:11 |
| mntmn | 6 so far | 00:25 |
| mntmn | and i think i don’t need more. yes, the BGA breakout of the imx8m should require more | 00:25 |
| mntmn | i just studied novena’s breakout in KiCAD. pretty fascinating to play with other people’s hard work | 00:26 |
| mntmn | i wonder why they never worked on an update to this project | 00:26 |
| Jookia | busy doing other stuff i imagine | 00:27 |
| Jookia | they haven't really released newer firmware either | 00:27 |
| mntmn | maybe burnt out on the whole thing also... it looks very ambitious | 00:27 |
| Jookia | that's probably the biggest issue with the novena: lack of firmware updates | 00:27 |
| Jookia | i think there's only been 2 community members that have updated the kernel, myself being one of them- but no complete updated images yet | 00:28 |
| Jookia | i could see burnout being a thing given the lack of GPU drivers at the time | 00:30 |
| Jookia | xobs had to backport various etnaviv-related patches (including the full driver itself) since the binary drivers wouldn't work on the novena and the gpu-viv drm driver would just spray all over RAM | 00:30 |
| Jookia | on top of that there was some mainlining work which i heard described as death by a thousand paper cuts :P | 00:31 |
| mntmn | oh yeah i can imagine that the situation was grim back then | 00:31 |
| Jookia | on top of that the FPGA doesn't have open source synthesis, unlike the ice40 series | 00:32 |
| Jookia | then the raspberry pi 3 came out which succeeded it on CPU speed, though even the rpi4 lacks native SATA | 00:34 |
| mntmn | yeah | 00:35 |
| Jookia | it's kind of a mixed bag when it comes to practicality, being a laptop that needs a table to sit at, an FPGA that needs another computer to compile for, and having GPIO go through the FPGA | 00:38 |
| Jookia | perhaps it may have been better off marketed as a portable high-end single-board computer | 00:40 |
| Jookia | single-board computer with lots of hardware hacking features, like a raspberry pi | 00:41 |
| mntmn | yeah | 00:44 |
| Jookia | i'm still torn on whether i'll get a reform or keep to my promise of only buying new devices when my existing ones die | 00:46 |
| kremlin | you know what'd be super sick | 00:50 |
| kremlin | zynq based sbc | 00:50 |
| kremlin | prototype & write drivers for hardware running on the FPGA | 00:51 |
| Jookia | maybe mntmn could sneak an fpga on to the SOM. i'm sure there's space ;) | 00:52 |
| mntmn | i just shipped a zynq based graphics/coprocessor card for amiga ;) | 00:53 |
| mntmn | zynq ultrascale might be usable for desktop stuff | 00:53 |
| Jookia | nice! | 00:54 |
| kremlin | i am working on a zynq-based board that emulates old ESDI hard drives | 00:54 |
| kremlin | https://www.pdp8.net/mfm/mfm.shtml <-- this but for ESDI | 00:54 |
| Jookia | FPGA-based stuff is getting more accessible. i'm really excited to do some risc-v stuff with the novena's FPGA | 00:54 |
| mntmn | https://shop.mntmn.com/products/zz9000-for-amiga-preorder | 00:54 |
| mntmn | kremlin: cool! | 00:55 |
| Jookia | wow, that's killer | 00:55 |
| Jookia | i'm not sure who else has done an FPGA GPU | 00:56 |
| Jookia | i know of the gameduino 1 | 00:56 |
| mntmn | yeah it uses the fpga part mostly for bus interface and native video capture / deinterlacing etc. i use one ARM core for graphics. the other for user applications | 00:57 |
| Jookia | wow | 00:58 |
| mntmn | so shipping this is what delayed reform 2 bringup. can’t wait to get back to it | 00:58 |
| Jookia | you make a lot of cool stuff | 01:00 |
| mntmn | thanks, i hope it will lead to other good stuff ;) | 01:02 |
| Jookia | quick everyone chant risc-v | 01:02 |
| mntmn | hehehe | 01:03 |
| Jookia | does the imx8 include a sound codec? if not, which will you be using? | 01:06 |
| kremlin | im sure it does | 01:10 |
| mntmn | i’m using a wolfson codec | 01:10 |
| kremlin | those imx chips have everything | 01:10 |
| Jookia | ah, is that mainline? | 01:10 |
| mntmn | imx8m has only digital audio out, no dac | 01:11 |
| Jookia | the novena used an es8328 which xobs had to write a driver for, but upstream's driver is kind of broken on the novena so i'll be debugging that i guess | 01:11 |
| mntmn | WM8731 i put in the design | 01:13 |
| mntmn | it’s mainline, but i still have to test it with imx8m | 01:13 |
| Jookia | ah ok | 01:15 |
| mntmn | imx8m has like a million audio channels, but i’m using only stereo ;) | 01:15 |
| adjtm_ | mntmn, bunnie said that novena was 8 layer, but he could have probably be able to do it with six | 01:40 |
| adjtm_ | maybe possible, but it seems very complex for 6 layers | 01:40 |
| adjtm_ | the main reason why I didn't used more the novena, was the pain that is working with xillinx tools | 01:42 |
| adjtm_ | but when novena was designed icestorm didn't exist (I think) | 01:42 |
| adjtm_ | so the fpga chosen made sense at the moment | 01:43 |
| adjtm_ | other problem is that it is not very comfortable to use as a laptop | 01:44 |
| mntmn | yeah i believe | 01:48 |
| mntmn | i’ve worked a lot with ISE and Vivado and certainly know the paib | 01:48 |
| mntmn | pain | 01:48 |
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