Search found 378 matches

by DaveyPocket
Thu Jan 10, 2013 7:03 am
Forum: Uzebox Derivatives & open source consoles
Topic: Uzebox & SRAM
Replies: 31
Views: 25521

Re: Uzebox & SRAM

When I was running the 644PU at 28.626MHz using the clock module, I ran it only at 5 volts. I drove almost every IO line, had the program memory full, and used most of the internal SRAM. The only thing I did not test is the EEPROM. Brad Well if we can confirm this works, I can use some of those spa...
by DaveyPocket
Thu Jan 10, 2013 6:02 am
Forum: Uzebox Derivatives & open source consoles
Topic: Uzebox & SRAM
Replies: 31
Views: 25521

Re: Uzebox & SRAM

I had done several experiments with the 1284 as well, I did notice differences if using different types of oscillating components. One was stable at 5.7 volts and the other 6 volts. I figured the only solution was to increase voltage and find an oscillator type and fuse setting combination that woul...
by DaveyPocket
Sat Jan 05, 2013 12:50 am
Forum: Programming & Software
Topic: Uzebox SD Gameloader V0.4.5
Replies: 179
Views: 202798

Re: Uzebox SD Gameloader V0.4.2!

Just to throw an idea out, is there a way we can make a self flashing bootloader updater? Like have the bootloader load a normal Uzebox "game". Have this "game" (program) write the new bootloader program in the bootloader space, then reset?
by DaveyPocket
Mon Dec 10, 2012 11:38 pm
Forum: Hardware
Topic: Uzebox enters the matrix!
Replies: 32
Views: 27939

Re: Uzebox enters the matrix!

Uzebox JAMMA doesn't have any controller ports I forgot about that. All games get recompiled with some changes to work on Uzebox Jamma correct? If we have an interface/protocol with a little mcu using a couple pins, we could easily have which pins are used configurable at compile time. In that way,...
by DaveyPocket
Mon Dec 10, 2012 1:47 am
Forum: Hardware
Topic: Uzebox enters the matrix!
Replies: 32
Views: 27939

Re: Uzebox enters the matrix!

I go for expansion module use.


I don't mind the controller dongle, but the Uzebox JAMMA doesn't have any controller ports!

Not sure how many people will be wifi linking arcade machines though... :lol: :lol:
by DaveyPocket
Sun Dec 09, 2012 10:47 pm
Forum: Programming & Software
Topic: Increasing horizontal resolution in video mode 3
Replies: 11
Views: 4954

Re: Increasing horizontal resolution in video mode 3

Thanks. A lot of stuff about how the video engine works has been cleared up now!

Would it be possible to do RAM tile only (sprites) video mode and achieve a resolution of 320x240 (not 360x240)? This may seem a bit outrageous, I'm just curious if it can be done :lol:
by DaveyPocket
Sat Dec 08, 2012 4:47 am
Forum: Programming & Software
Topic: Increasing horizontal resolution in video mode 3
Replies: 11
Views: 4954

Re: Increasing horizontal resolution in video mode 3

That makes sense.

Though I noticed that video mode 9 has a 360x240 screen resolution, how does that work? Do the additional pixels go outside the visible screen space as you mentioned?
by DaveyPocket
Sat Dec 08, 2012 12:07 am
Forum: Programming & Software
Topic: Increasing horizontal resolution in video mode 3
Replies: 11
Views: 4954

Increasing horizontal resolution in video mode 3

Is there a way to get the horizontal resolution of video mode 3 up to 256 wide? I noticed that it can only go up to 240, is there a way to get two more columns of 8x8 tiles squeezed in there or can the kernel not handle it?
by DaveyPocket
Thu Dec 06, 2012 11:11 pm
Forum: Hardware
Topic: Uzebox enters the matrix!
Replies: 32
Views: 27939

Re: Uzebox enters the matrix!

Good idea! For those going the surface mount route, may not be best to waste a socket and not have anything go instead. Rather, use two these on each side to create a 40-pin DIP package: http://www.digikey.com/product-detail/en/SMH100-LPSE-S20-ST-BK/S9216-ND/2039520 There may have to be some testing...
by DaveyPocket
Thu Dec 06, 2012 5:03 am
Forum: Hardware
Topic: Uzebox enters the matrix!
Replies: 32
Views: 27939

Re: Uzebox enters the matrix!

Now...how do we make such a "raiser card"? Is there special pins for such usage? We can use something like this: https://www.sparkfun.com/products/8118 A 40-pin DIP wire-wrap socket. The legs are long enough to go through the PCB and into the socket on the Uzebox main board. You can find ...