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Icepi Zero - The portable FPGA development board

Icepi Zero - The portable FPGA development board

31 devlogs
112h 39m
Created by Cyao

The ultimate FPGA development board! (500+ stars! Viral on reddit, hackaday and hackernews)

Timeline

Got my Icepi to interface with a Raspberry Pi Zero 2 W! Yay

Cyao
Cyao
7h 24m 4 days ago

Tried to build next186 for the icepi, but failing miserably...

I'll push it up for later ig
https://www.crowdsupply.com/icy-electronics/icepi-zero

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Aaaaaaaaaaaaand Oberon is ported over!

Oberon an TUI OS developed in the 80s by ETHZ! And it's now on Icepi Zero!

https://www.crowdsupply.com/icy-electronics/icepi-zero

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Cyao
Cyao
2h 33m 11 days ago

Made a comparison table for the Icepi Zero! Result: The icepi is superior in many aspects ;p

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Cyao
Cyao
1h 54m 16 days ago

Okay I've improved the stability of the sdram by making the skew rate slow.
I've also patched up the SDRAM's data lines to be less curved

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Cyao
Cyao
6h 14m 16 days ago

Guess what, I still am debugging... Soldered on a 0402 100n capacitor and the stability seems a bit better now.

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Cyao
Cyao
6h 20m 18 days ago

I have no idea why this is happening...

Cyao
Cyao
6h 41m 20 days ago

Lately I've done quite a bit of advertising on twitter, mastedon, snapchat, reddit etc.

I am also getting a quote from elecrow & pcbway!

At the same time I'm porting new emulators onto the Icepi Zero :)

Subscribe at https://www.crowdsupply.com/icy-electronics/icepi-zero!

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Cyao
Cyao
2h 55m 25 days ago

Now I've ported the Acorn Atom to the Icepi Zero!

Icepi Zero is also on crowd supply!!! https://www.crowdsupply.com/icy-electronics/icepi-zero (Go subscribe :P)

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Cyao
Cyao
7h 12m 26 days ago

I've played around even more with the fpga nes emulator, and it seems that the sdram shift is the problem. I've tested from 0 to 360 deg shift, and 70 degs seems the best - now I've got this thing:

Cyao
Cyao
14h 41m 26 days ago

Been trying to port nes and minimig without success - all it shows is a red screen / black screen :(

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Cyao
Cyao
1h 30m 30 days ago

Implemented capital letters on my uart2ps2 converter!!! Time to do Amiga or C64 next!!!

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Cyao
Cyao
3h 45m 30 days ago

I am currently debugging my uart to ps2 converter, had to implement a ram and complex shift logic...
Ugh these waves are giving me a headache

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Work done:
1. Coded UART2PS/2 converter in HDL. It allows me to use my laptop to control a icepi which acts as a translator to control a 2nd apple I icepi
- I don't have a PS/2 keeb lol
2. Resolved a lot of issues w/ crowd supply, sneek peek here:
https://gist.github.com/cheyao/b4e4dff16e57eee34059d490b6547e64

Went through a few Crowd Supply Github issues.
And I took this nice picture of the icepi!

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New features:
Icestudio support (https://icestudio.io/)
APIO support (https://github.com/FPGAwars/apio)
New APIO Icepi Zero example
Started porting NES over to Icepi Zero
Accepted at Crowd Supply

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After some testing, I concluded that doom chip can't be ran on icepi zero due to insufficient DP16KD and MULT18X18D cells :(

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160MHz CPU + RAM with custom hardware acceleration ported to the Icepi Zero!

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Cyao Cyao about 1 month ago
My fpga is at https://github.com/cheyao/icepi-zeroThe silice port is at https://github.com/cheyao/SiliceYou can see this example at projects/fire-v :)
Nicholas West Nicholas West about 1 month ago
Sick! Any repo to this so I can peek at it lol?

Ported the Silice framework over to Icepi Zero! (https://github.com/sylefeb/Silice)

At the same time opened a pr to the upstream:
https://github.com/sylefeb/Silice/pull/281

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Icepi Zero now has USB capabilities:

Made a USB+HDMI core using 1000+ logic gates :D
Ultra low latency video refresh

Batch 2 came :O

Updates:
- Patched kicad wakatime up
- Updated apple 1 to use v1.2 files
- Update files in github repo

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Fixed kicad wakatime!
Now you just need to pick a kicad_pro file, it has file filters and has better error messages!

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Patched up kicad wakatime a bit more - take this beautiful pic

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The schematic looks sooooooo much better with the new symbol

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A/ I've patched up kicad-wakatime
B/ I've made a custom symbol of the ECP5-CABGA-256! My schematic will be much more prettier
C/ I've put the custom symbol into the schematic!

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I've started writing up my journal - so the people who comes after me can know what I did :)

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I am starting to create my custom symbol of the ECP5 CABGA256 in order to avoid potential legal issues.

Spent 1h and only placed one fifth of the pins... (aka 50 pins)

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Patched up kicad-wakatime :D https://github.com/hackclub/kicad-wakatime/pull/19

I finally can work on my custom symbol

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Guess what got ordered!

Icepi Zero v1.3 soon!

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Ported over a USB core to Icepi Zero! - USB 1.0 spec implemented (like legit on the hardware level, not software)

It can now act as an keyboard!

(Also started patching up kicad-wakatime)

Mish Mish about 2 months ago
USB!!!!! 😍

Got the original APPLE I working on the Icepi Zero! https://github.com/alangarf/apple-one/pull/45

This is an complete remake from the hardware level.

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