Search found 1190 matches

by CunningFellow
Mon Dec 24, 2018 8:17 pm
Forum: Off Topic
Topic: What retrocomputers/retroconsoles/diy hw do you own?
Replies: 6
Views: 5423

Re: What retrocomputers/retroconsoles/diy hw do you own?

Did/Have owned the below, but sadly had to get rid of them all apart from the CPC which I kept because it was my first. Atari 2600 woodgrain, Atari 2600 black, Amstrad CPC464, Amiga B2000, Amiga A600, Atari 1040STFM, Apple 11c, Apple Mac 512, Apple Mac SE, Apple Mac PPC 5200, IBM 5150, ZX Spectrum, ...
by CunningFellow
Thu Dec 20, 2018 8:39 pm
Forum: Uzebox Code Challenge
Topic: UCC2014: Final Results!
Replies: 23
Views: 16354

Re: UCC2014: Final Results!

T2K was done (long) before Jubatians awesome work on the SDHC + Fat32 bootloader. So there may be 2 problems. First it will only work on 2G FAT16 cards. Second if needs a fast SD card or the screen is corrupted. If you get the message "No SD card file" it is probbaly the first. I have a new release ...
by CunningFellow
Mon Dec 17, 2018 11:20 pm
Forum: Games & Demos
Topic: Game ideas and inspiration
Replies: 3
Views: 2841

Re: Game ideas and inspiration

OpWolf sounds like a perfect use case for the megasprite (ROMBlit) mode.
by CunningFellow
Mon Dec 03, 2018 1:24 am
Forum: Programming & Software
Topic: Five clock per pixel RLE mode
Replies: 46
Views: 18235

Re: Five clock per pixel RLE mode

Sadly I am still having lines drawing where there should not be any (see the yellow engine exhaust and blue line from the nose). More debugging next weekend I guess. 1337.jpg Here is a HEX of that same broken picture if someone wants to see it on real hardware. It is just canned lines for this examp...
by CunningFellow
Sun Dec 02, 2018 10:37 am
Forum: Programming & Software
Topic: Five clock per pixel RLE mode
Replies: 46
Views: 18235

Re: Five clock per pixel RLE mode

Seeing as the forum was slow at the moment I was going to post a still picture from my current demo I am working on. I was not ready to post the demo because from some angles the picture broke up. I thought it was a problem with hidden surface removal. Turns out it was the Y=MX+C to RLE converters l...
by CunningFellow
Sat Dec 01, 2018 8:23 pm
Forum: Games & Demos
Topic: Image viewer for SPI RAM
Replies: 5
Views: 3821

Re: Image viewer for SPI RAM

Awesome. What is the resolution and colour depth? I did a proof of concept SD card video mode to replace Mode7 because of a game I wanted to do a port of. By using all the Hsync and VSycn blanking time as well as visible for reading the SD card I could only manage I think about 160x200 in 64 colours...
by CunningFellow
Sun Nov 18, 2018 4:24 am
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 203
Views: 62588

Re: The quest to a portable Uzebox - update!

I'm not sure of the function of C14 in that circuit,

I think an active stage between the AVR and the LM386 could help.
by CunningFellow
Fri Nov 16, 2018 9:52 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 203
Views: 62588

Re: The quest to a portable Uzebox - update!

I can give more ideas if you post the schematic. But first thing I would try is the suggestion I made a few posts ago. Straight after the PWM leaves the ATMega644 have it go through a low pass filter and then a unity gain buffer (voltage follower) before going through the volume knob. Hopefully your...
by CunningFellow
Sun Nov 11, 2018 9:55 am
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 203
Views: 62588

Re: The quest to a portable Uzebox - update!

good work.

The other thing you can do aside from moving the noise radiator (ESP8266) further away is to lower the susceptibility of the audio amp.
by CunningFellow
Fri Oct 26, 2018 10:56 pm
Forum: Hardware
Topic: The quest to a portable Uzebox - update!
Replies: 203
Views: 62588

Re: The quest to a portable Uzebox - update!

start by putting an LC filter between the ESP VCC and the rest of the circuit to see if the noise is conducted that way.