Search found 213 matches

by Janka
Tue Mar 12, 2019 12:04 am
Forum: Programming & Software
Topic: Game size problem with bootloader.
Replies: 8
Views: 1380

Re: Game size problem with bootloader.

Yes, you may be right. I've tried more games and found Zooming Secretary has the same problem on this Uzebox.
It's Uzebox game loader 0.4.2.

Where do I get a working boot loader and how do I flash it with avrdude on Linux?
by Janka
Sun Mar 10, 2019 10:58 pm
Forum: Programming & Software
Topic: Game size problem with bootloader.
Replies: 8
Views: 1380

Re: Game size problem with bootloader.

So, as I thought the limit is 60K. This is from the current version: packrom Wuergertime.hex Wuergertime.uze ../gameinfo.properties Packing file: Wuergertime.hex Game Name: Wuergertime Author: Jan Kandziora Year: 2012 CRC32: 0xc263e2f7 Program size: 55928 Wuergertime.elf : section size addr .data 15...
by Janka
Sun Mar 10, 2019 7:06 pm
Forum: Programming & Software
Topic: Game size problem with bootloader.
Replies: 8
Views: 1380

Game size problem with bootloader.

Hi, long time no see. Someone pushed me a bit and I nearly completed my Würgertime game (only sound effects are missing) in the last months. It runs fine in Uzem but no luck on the real machine. Right after flashing it from the SD card into the µC, there's more or less video and audio garbage instea...
by Janka
Sun May 11, 2014 6:03 pm
Forum: Uzebox Code Challenge
Topic: looking for some people to enter the contest together
Replies: 17
Views: 6601

Re: looking for some people to enter the contest together

schepers_cp wrote:instead, i think i'll hire someone to code for me
Oh great, commissions!

Should we create a deviant art group for Uzebox games? No kidding 8-)
by Janka
Tue Mar 25, 2014 1:34 pm
Forum: General Discussions
Topic: Getting back into the swing.
Replies: 20
Views: 5206

Re: Getting back into the swing.

The next option is a limited color mode to save flash and ram space. Something like 5 bits then store the data in 16 bit clusters. Use bit masks to remove the 3 pixels from a 16 bit int and buffer the extra bit for use in stuff like collision data. I don't know if it's possible to do a duo-tone or ...
by Janka
Thu Mar 20, 2014 5:32 pm
Forum: Games & Demos
Topic: Is there any MapSprite2 limitation?
Replies: 19
Views: 5262

Re: Is there any MapSprite2 limitation?

That 3x3 player sprite would need 16 RAM tiles when not aligned at all. Have you properly configured the tiles count in the Makefile?
by Janka
Thu Mar 20, 2014 1:47 pm
Forum: Games & Demos
Topic: Is there any MapSprite2 limitation?
Replies: 19
Views: 5262

Re: Is there any MapSprite2 limitation?

sorry forgot to mention... I'm using Video Mode 3 that looks (just looks :D ) easier! The mapping in mode 3 is limited on the number of RAM tiles used. As each RAM tile takes up 64 bytes, you can have ~38 of them at max. This depends on how much global variables you have and which stack size you ne...
by Janka
Mon Mar 17, 2014 11:53 am
Forum: New to Uzebox? Start here!
Topic: Why my ISP dose not work?
Replies: 7
Views: 4844

Re: Some test about ISP and why it does not work

but ATMEL644 from kits may not be "ISP" using the minimum circuit, it might be set using external crystal oscillator, with 20 M frequency. I bet is is. They have to test each individual chip if it runs stable at 28MHz, as this is beyond the maximum rating from the datasheet. I doubt they have reset...
by Janka
Sun Mar 16, 2014 11:58 am
Forum: New to Uzebox? Start here!
Topic: Why my ISP dose not work?
Replies: 7
Views: 4844

Re: Why my ISP dose not work?

(1) atmega644 is programmed with "game loader", which won't allow ISP? This is a common misconception how the ISP works which circulates around AVR newbies. Forget it immediately :o ISP is a hardware built into the chip and has nothing to do with a bootloader image which may or may not be on the ch...
by Janka
Sat Mar 15, 2014 11:27 am
Forum: New to Uzebox? Start here!
Topic: Why my ISP dose not work?
Replies: 7
Views: 4844

Re: Why my ISP dose not work?

avrdude -c usbasp -p m644 -B 4 -U flash:w:Megatris.hex -U efuse:w:0xFE:m -U hfuse:w:0xD2:m -U lfuse:w:0xFF:m I never tried the usbasp interface type directly, only the avrisp2 emulation the thing has. Can you program other AVRs with the "usbasp" setting? My .avrduderc for the USBasp reads default_p...