Search found 408 matches

by Deouss
Tue Dec 10, 2019 3:20 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 382
Views: 172126

Re: What would you like to see in The Next Chip?

On using RiscV: Let's say that we're not a member of the RiscV foundation just because we had the spare cash and picked them at random :P apart from that, I don't want to divulge too much on roadmap matters. Is there a specific reason that you want to have a 64-bit processor for embedded stuff; why...
by Deouss
Mon Dec 09, 2019 1:37 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 382
Views: 172126

Re: What would you like to see in The Next Chip?

Are you guys planning a chip based on Risc-V (64bit) ?
If price of KPU K210 drops it may be very very attractive choice comparing to esp.
Its specs are just insane. If not Risc-V then maybe some Xtensa 64bit cpu with higher clocks and better memory
Cheers
by Deouss
Tue Jun 11, 2019 12:11 pm
Forum: General Discussion
Topic: espressif's "Chip7 2-2-A" spotted in the wild
Replies: 55
Views: 21171

Re: espressif's "Chip7 2-2-A" spotted in the wild

Any dates yet we could expect the final announcement?
by Deouss
Mon Jun 03, 2019 11:52 am
Forum: Hardware
Topic: Driving an 8-bit parallel 8080 bus using I2S
Replies: 25
Views: 9329

Re: Driving an 8-bit parallel 8080 bus using I2S

I've already tried the GPIO w1ts/w1tc byte permutation trick with a lookup table that some YouTuber made and it's not really fast. It goes up to 38FPS and the tearing is very significant and ugly. It also doesn't utilize DMA, but it's all just bitbanging. I don't think that assembly would help ther...
by Deouss
Mon Jun 03, 2019 1:27 am
Forum: Hardware
Topic: Driving an 8-bit parallel 8080 bus using I2S
Replies: 25
Views: 9329

Re: Driving an 8-bit parallel 8080 bus using I2S

I heard on some hacker forums Bituni simple ripped that code off of someone else's project. Not sure but this code looks a bit sloppy and it is heavy mixed with Arduino. If you look at I2S technical reference info there are a lot of functionalities that are untouched by most of the code out there. I...
by Deouss
Sat May 25, 2019 4:19 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 1493

Re: Writing to GPIO_OUT_REG to only specific pins

Thanks. Well I use whole word only with needed bits so masking is not necessary.
Actually XOR operation might not be needed and data will be precalculated ready to write)
I want to use assembler instructions to repeat inline few times for speeding execution.
by Deouss
Fri May 24, 2019 2:10 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 1493

Re: Writing to GPIO_OUT_REG to only specific pins

So operations steps would be:

val => W1TS
val ~= val
val => W1TC

How that would look in asm ?
by Deouss
Fri May 24, 2019 1:40 pm
Forum: General Discussion
Topic: espressif's "Chip7 2-2-A" spotted in the wild
Replies: 55
Views: 21171

Re: espressif's "Chip7 2-2-A" spotted in the wild

May I ask - why not 2 cores?

:?:
by Deouss
Thu May 23, 2019 4:23 pm
Forum: Hardware
Topic: Writing to GPIO_OUT_REG to only specific pins
Replies: 4
Views: 1493

Writing to GPIO_OUT_REG to only specific pins

Let's say I want to set 12 bits/pins simultaneously with specific values 0/1 to gpio output register but I do not want to change other bits - must be done with one 32bit word write and possibly one write instruction. Do I have to disable/enable bits with mask first? I don't want to change settings o...

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