Search found 35 matches

by Fabrizio Caruso
Thu May 06, 2021 5:30 pm
Forum: Homebrew software and hardware (excluding games)
Topic: PSG sound
Replies: 8
Views: 970

Re: PSG sound

@username It works GREAT!
I still have a problem but it may be unrelated to the code. Why do I always here a buzzing sound with Mess/Mame when emulating the Creativision? Is this a Mess/Mame bug? I get the buzzing sound even when the Creativision produces no sound at all.
by Fabrizio Caruso
Thu May 06, 2021 5:02 pm
Forum: Homebrew software and hardware (excluding games)
Topic: PSG sound
Replies: 8
Views: 970

Re: PSG sound

Thanks a lot!

A single beep will improve my games a lot.
After that I will read the PSG specs and try to figure out how to use other commands for things like noise sounds.
by Fabrizio Caruso
Thu May 06, 2021 7:01 am
Forum: Homebrew software and hardware (excluding games)
Topic: PSG sound
Replies: 8
Views: 970

Re: PSG sound

@username, how do I program the SN76489 on the Creativision? How do I write onto its registers on the Creativision?
by Fabrizio Caruso
Wed May 05, 2021 10:46 pm
Forum: Homebrew software and hardware (excluding games)
Topic: PSG sound
Replies: 8
Views: 970

Re: PSG sound

I need to do something quite simple. I just need short (blocking is fine) beep sounds. If possible I would like to have a couple of noise sounds. I am doing this in C (with little or no Assembly). I am doing this to add minimal sound support to the Creativision target in my Cross-Lib universal 8-bit...
by Fabrizio Caruso
Wed May 05, 2021 8:41 pm
Forum: Homebrew software and hardware (excluding games)
Topic: PSG sound
Replies: 8
Views: 970

PSG sound

I would like to add some very simple sound effects in my games but I have no idea how to do it. CC65 exposes some BIOS functions that should produce some sounds but it is not clear at all to me how they are use. For example _bios_playsound: https://github.com/cc65/cc65/blob/master/libsrc/creativisio...
by Fabrizio Caruso
Sun May 02, 2021 6:31 pm
Forum: Games programming
Topic: Cross Horde
Replies: 1
Views: 317

Cross Horde

Cross Horde is the fifth "universal" 8-bit game that I have written with my framework Cross-Lib https://github.com/Fabrizio-Caruso/CROSS-LIB Thanks to Cross-Lib I can build my games for about 200 systems including the Creativision. A video of the gameplay on the Creativision is in: https://youtu.be/...
by Fabrizio Caruso
Thu Jul 30, 2020 1:03 pm
Forum: Games programming
Topic: Who has real hardware to test my homebrew games?
Replies: 8
Views: 2311

Re: Who has real hardware to test my homebrew games?

Thanks! It looks good! Is it too hard? too fast? You can also shoot at the enemies and missile bases if we catch the gun item. The game has 10 items. Some of the items are secret and can be unlocked by some actions you can do with the gun (kill/hit the skull, destroy (multiple) missile bases). The g...
by Fabrizio Caruso
Wed Jul 29, 2020 6:13 pm
Forum: Homebrew software and hardware (excluding games)
Topic: Conventional structure for 18k and bigger images?
Replies: 3
Views: 1381

Re: Conventional structure for 18k and bigger images?

So, if I create a cartridge image, I need to swap the 2 16kb blocks, i.e., the higher block should come before the lower one. When I try to load such a cartridge I get an error in Mame/Mess about its size: Fatal error: Device CreatiVision Cartridge Slot load failed: Image extends beyond the expected...
by Fabrizio Caruso
Wed Jul 22, 2020 10:39 pm
Forum: Games programming
Topic: Who has real hardware to test my homebrew games?
Replies: 8
Views: 2311

Re: Who has real hardware to test my homebrew games?

Thanks Scouter3d for your test! Is the flickering caused by my game code? In Mame/Mess I hear an annoying sound. (The game has no sound, yet). I cannot really see which version of the game you are testing. Cross Chase latest version has some graphics and colors. I have just updated it at: https://gi...
by Fabrizio Caruso
Fri Jul 17, 2020 8:57 pm
Forum: Homebrew software and hardware (excluding games)
Topic: Conventional structure for 18k and bigger images?
Replies: 3
Views: 1381

Conventional structure for 18k and bigger images?

Hi everyone, what structure do emulators (such as Mame or Mess) conventionally expect for 18k and bigger rom images? For 16k I know I need to invert the two 8k blocks. What should I do for 18k images? and for bigger images? What is the maximum size I can have on an emulator and or real hardware equi...