Forum comments in chronological order

Disclaimer: I am not responsible for what people (other than myself) write in the forums. Please report any abuse, such as insults, slander, spam and illegal material, and I will take appropriate actions. Don't feed the trolls.

Jag tar inget ansvar för det som skrivs i forumet, förutom mina egna inlägg. Vänligen rapportera alla inlägg som bryter mot reglerna, så ska jag se vad jag kan göra. Som regelbrott räknas till exempel förolämpningar, förtal, spam och olagligt material. Mata inte trålarna.

Apr 2009

Craft

Anonymous
Fri 3-Apr-2009 10:14
I'm thinking how to change it in to a "graphic&sound card".
How to force it to display data from UART (or other interface).
Anyway, awsome work. I'm highly impressed.

I apologize for my English.

The hardware chiptune project

Anonymous
Sun 5-Apr-2009 03:51
Wonderful design and music ! I'm trying to reproduce it and to understand it, but for now I'm stuck on a few build problems.

Thierry C.

Craft

Anonymous
Wed 8-Apr-2009 13:23
This is sweet!

It kicks ass!

The hardware chiptune project

Anonymous
Wed 8-Apr-2009 21:53
hah... thats amazinggg.(: youre wayy smart *___*

One man and his piano

Anonymous
Wed 8-Apr-2009 23:33
I think you did a great job, given the complexity of the piece - practice makes perfect! Just wanted to balance the negative comments on here. More!

Craft

Anonymous
Thu 9-Apr-2009 03:32
Hi

I have some questions. This is really one of the most amazing things i have seen, and since you have uploaded the source and schematics i wanted to build my own copy of your demo board to see if it actually works. (I REALLY want to see it with my own eyes and show it to my friends)

So,
I have an atmega168 lying around, which almost is identical to atmega88, but with more flash. My board is ready and built according to your ASCII description, but I can't make it work for some reason. Im quite new to microcontrollers and im not familiar enough with assembler to understand most of your code (I have tried for hours, really). Linux is my main OS and i have avr-gcc, avrdude, the build-essential metapackage and so on installed, so compiling your sources went without problems. The hex-file is uploaded and the fuses are set as you described. But as mentioned, it does not work.. there is no signal on any pin.

I think this is because the source is unchanged, and written for atmega88, so there are most likely some things that need to be changed in order to run it on atmega168, but i dont even know where to start. Usually i use eclipse with the avr plugin, so i dont really know how most things actually work. Here is a comparision between atmega48, 88 and 168: http://www.atmel.com/dyn/resources/prod_documents/doc2554.pdf

Would you pleeease help me getting started, i really want to make this work. I will upload my eagle schematics and board layout once im sure it works, together with the atmega168 hex file in case someone is interested.

Where's the man's hat?

Anonymous
Thu 9-Apr-2009 18:33
tl;dr

What's up?

Anonymous
Sun 12-Apr-2009 23:51
Great Demo Linus!

A bunch of us were watching the Breakpoint TV feed, wishing we were there!

Turbulence

Anonymous
Mon 13-Apr-2009 15:47
it's going to take time :) As I really wonder how you did that, especially the video modes used with so few RAM, I tried to disassemble your eeprom using PropList but the result is... unreadable :)
And if you have mixed spin and pasm... going to be very tough...

by the way, give me a clue, tile mode ? 16x16, 4 colors per tile ?
Anonymous
Mon 13-Apr-2009 16:23
seek and ye shall find.... :)
Anonymous
Mon 13-Apr-2009 17:02
is it normal that the eeprom header is that strange ? the 1st long should give the Clk frequence and 00007C5C => 1551 MHz !?!? (instead of 8O MHz as you said it is demo board compatible : 00B4C404)
And the image checksum in not verified...

Did you upload the good image ??? Not sure I'd like to test it on my demo board...

Reverberations

Anonymous
Mon 13-Apr-2009 22:08
Great idea and great interpretation :)
Anonymous
Mon 13-Apr-2009 22:49
shocking.

Turbulence

Anonymous
Tue 14-Apr-2009 05:02
the 1st long should give the Clk frequence and 00007C5C => 1551 MHz !?!? ...

00007c5c is an assembly instruction.
Anonymous
Tue 14-Apr-2009 13:57
5C7C0000 =>
010111 0001 1111 000000000 000000000
RET ????
Return to which address ?

Why do the eeprom starts like that and not as a standard image ?

A case against syntax highlighting

Anonymous
Tue 14-Apr-2009 14:58
This is bullshit.

A lot of the time you don't "read" code, you scan it. If you're looking for constructor calls or error messages (strings) then yes, only actually *reading* the green text is many times faster and less error-prone.

In normal text you don't skip every verb (or noun or whatever) but when briefly browsing code you *can* skip strings (green) and just look at the blue words (if,then,else,while,...) plus indentation to get the general flow of the function.

Turbulence

Anonymous
Wed 15-Apr-2009 08:48
Everything else in the first 16 bytes of the header is standard. The important stuff starts at 0x18 (as suggested in the header) where you see some interpreter bytecodes that are used to launch the program. To understand the rest, you'll have to dig it in the parallax propeller forum.

The TTY demystified

Anonymous
Mon 20-Apr-2009 10:28
amazing man , this is amazing !!! best tty article ever

Craft

Anonymous
Wed 22-Apr-2009 09:41
amazing work man, the sounds of your demo brought me back to my youth playing games on ancient hardware :D
Anonymous
Thu 23-Apr-2009 03:13

lft wrote:

the author should have drawn schematic more legibily using some circuit drawing software instead of this lousy ascii patterns

arun -
India

If you want to, feel free to draw the schematic using such a program, and I'll put it on the page.

I will take this up.
Ill draw it in eagle
Anonymous
Thu 23-Apr-2009 05:16

lft wrote:

the author should have drawn schematic more legibily using some circuit drawing software instead of this lousy ascii patterns

arun -
India

If you want to, feel free to draw the schematic using such a program, and I'll put it on the page.

I will take this up.
Ill draw it in eagle

Finished!
I replaced the pnp transistor with a P-Mosfet
I can Make the PCBS for these, but they will cost about $40-$60 a board fully assembled.
I used axle resistors and diodes in the schematic
Here is the schematic: http://dump.no/files/de4e5c2db4de/craft-sch.7z
In it is a High Contrast and Low Contrast Image of the Schematic, Also an Eagle CAD schematic file.
Eagle CAD is Freeware, many people use it: http://www.cadsoft.de/
Enjoy :3
Anonymous
Thu 23-Apr-2009 05:24
Hi

I have some questions. This is really one of the most amazing things i have seen, and since you have uploaded the source and schematics i wanted to build my own copy of your demo board to see if it actually works. (I REALLY want to see it with my own eyes and show it to my friends)

So,
I have an atmega168 lying around, which almost is identical to atmega88, but with more flash. My board is ready and built according to your ASCII description, but I can't make it work for some reason. Im quite new to microcontrollers and im not familiar enough with assembler to understand most of your code (I have tried for hours, really). Linux is my main OS and i have avr-gcc, avrdude, the build-essential metapackage and so on installed, so compiling your sources went without problems. The hex-file is uploaded and the fuses are set as you described. But as mentioned, it does not work.. there is no signal on any pin.

I think this is because the source is unchanged, and written for atmega88, so there are most likely some things that need to be changed in order to run it on atmega168, but i dont even know where to start. Usually i use eclipse with the avr plugin, so i dont really know how most things actually work. Here is a comparision between atmega48, 88 and 168: http://www.atmel.com/dyn/resources/prod_documents/doc2554.pdf

Would you pleeease help me getting started, i really want to make this work. I will upload my eagle schematics and board layout once im sure it works, together with the atmega168 hex file in case someone is interested.

My guess is the registries for the timer interrupts are different on the 88 then the 168.
You should see some signals on the pins tough.
Read the atmeag168 manual and the atmega88 manual
Look at the registries on the chips
Compare them, to what he is setting in code, make changes...
here is my email: (godberg[at]gmail{Dot}com)
I am also the one who posted the eagle schematic...
I'll help you out.

Bärnsten

Anonymous
Fri 24-Apr-2009 03:48
Trevlig låt. Jag gillar den! *digga* :D

(foto)

Anonymous
Fri 24-Apr-2009 09:38
Haha! Skickligt monterat! Var hittar man den?

A case against syntax highlighting

Anonymous
Tue 28-Apr-2009 03:09
Det blev en skillnad, så jag kan inte annat än att hålla med dig. Det blev ju mycket läsvänligare.

Autosokoban

Anonymous
Fri 1-May-2009 00:45
hey!

very nice job! i love this game. levels are getting more and more tricky, but you never know if the next one is easy or not. :) is there any way to install the programm on a cell phone? how complex is the algorithm to generate the levels?