Testing the keyboard: you can test most keys with any games. After you select any game (with the reset button followed by presses of the joystick trigger buttons), start a game by pressing any key on the keyboards. Almost every key is enabled to start games. If the key works, press reset again, and...

Well I don't think you'll be able to test anything other than a small number of keys on the controller with just Sonic Invader. I'd suggest you look at one of the MultiCart solutions. There are powerful ones (Thanks to Scouter3D) and there are Open Source ones you can do yourself. (Full disclosure!...

If you own a multimeter you can simply meassure connectivity on the keypads when you press a key (every keypress needs 2 connections, only SHIFT, CTRL and the two firebuttons need only 1 connection...) find joystick and keyboard mappings attached... Joystickmappings.jpg Thanks your help is always p...

Apologies for the delay - work etc Sonic Invaders stores the Sprite Attribute Table at VRAM 0x300, and the Sprite Pattern Table at VRAM 0x800. Good luck! So are you telling me the problem is ONLY in the rams? I think what you gave me is a mapping of the VRam the solution is to find which ram works ...

If the test game is Planet Defender or Deep Sea Rescue - the terrain disappearing is normal. Otherwise, tell us which game you are using and we can tell you which VRAM locations / registers are in use. Thanks for the reply the game I'm talking about is Sonic Invader both the enemy spaceships and th...

good morning testing one of the consoles that were kindly given to me for repair I found one that while I'm playing the sprites on the screen disappear for a few moments the game continues without any problem but the moving sprites disappear leaving only the background elements does anyone know what...

Thank you very much
you are great
now everything is clear and you understand perfectly !!!
if I understand it, everyone understands it

Thanks for the welcome !! I am starting to retrieve as much information as possible to start testing the consoles I have but how will I have to deal with a serious problem, for sure I will do my post Thanks again Grazie per l'accoglienza !! Sto iniziando a recuperare più informazioni possibili per i...

Hi everyone, I am LoAnMiLu, retrogaming enthusiast but, more precisely, Intellivision fan. Now I have the opportunity to study the Creativision console and I have found this to be the best place to do it Ciao a tutti, mi presento sono LoAnMiLu, appassionato di retrogaming ma, più precisamente, fan d...