Search found 33 matches

by RenderEng
Mon May 15, 2023 2:45 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

Yes it seems new Samsung TVs started ditching legacy video and only supports HD ones. I have a Samsung HDR TVs hooked up into my devkits it works with Xbox and PS4/5 but does not like the F18a. Also i had trouble this TV does not like mega65 in c64 mode.
by RenderEng
Sat May 13, 2023 5:27 pm
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

Well, you actually failed flashing it. The Tang 9K comes with this Pico SoC by default.

Someting is wrong in your setup. You need to choose "emFlash Erase, Program". What is the Output window says:

What is your Gowin IDE version ? You are not using the open source toolkit aren't you ?
by RenderEng
Sat May 13, 2023 7:29 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

Pull my latest changes and reflash your unit. I fixed the cold boot power on.

The gromclk for some reason needs to start high and not low
by RenderEng
Fri May 12, 2023 11:13 pm
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

My nabu from cold boot sometimes get into this screen. Looks like the z-80 gets stuck, since the board is running and the clock is ticking. Just press reset and you are good to go.

I'm still trying to understand the cause of this.
by RenderEng
Fri May 12, 2023 5:17 pm
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

Don't verify. And double click at the process tab on IDE, the last item is Program Device. it will open the programmer set up as SRAM with the code already selected, then change from SRAM to Embedded Flash, Erase and Program. Sometimes the prorgammers gets confuse about the user code and fails progr...
by RenderEng
Fri May 12, 2023 4:42 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

I also left the description of the jumpers. They are inversed.
by RenderEng
Fri May 12, 2023 4:36 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

I submitted some pics and updated assembling instructions to the github,
by RenderEng
Fri May 12, 2023 4:35 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

I added some pictures to the github.

The normal socket goes over the original NABU socket and has 2 functions: clearance and to protect the NABU socket against machined pins (they are larger in diameter)
by RenderEng
Thu May 11, 2023 6:20 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

So anyone was able to repro the f18a yet ? I was looking into this I think is a good fit on the back of the NABU. Make a 3d plate to match this. https://www.aliexpress.com/item/1005001458368224.html?spm=a2g0o.detail.1000060.3.5ad56354hBEmb4&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339....
by RenderEng
Wed May 03, 2023 5:12 am
Forum: RenderEng F18 Alt
Topic: DIY F18a alternative
Replies: 62
Views: 10390

Re: DIY F18a alternative

do you have the link for the tang nano 9k at 19 cad I just got a new one and it was 24 freight. Maybe BC is more expensive ?

Make sure you get the 9K model.