LyonsArcade
Well-known member
Hi folks!
I'm working on a Missle Command, and I've never messed with these before. So far, I've replaced big blue, and rebuilt the A/R II board, I'm getting good voltages as measured on the pcb. When I first did this, the game came up and game me a ram error, I replaced that ram chip and the game played 100%. Then it crashed on me. I've checked all 6 eproms, they all test good, and I cleaned and reseated the cpu and pokey.
The issue I'm getting is this: the game plays, but the area that the title appears in (MISSILE COMMAND) stays on the screen, as the bombs blow it up. It never completely goes away... the missiles blow it all to hell, but little fragments stay all over that part of the screen. If you put it into test, it stays there and says rom/map/ram are o.k... if you go back out into the game, it's STILL there. It changes slightly as the missiles blow away bits of it, but some of the explosions stay there, etc. If you start a game, it stays there too. So whatever is supposed to blank that out I guess is messed up. Any ideas?
First thing I'm going to do is replace the sockets on the cpu/pokey, any other suggestions?
I'm working on a Missle Command, and I've never messed with these before. So far, I've replaced big blue, and rebuilt the A/R II board, I'm getting good voltages as measured on the pcb. When I first did this, the game came up and game me a ram error, I replaced that ram chip and the game played 100%. Then it crashed on me. I've checked all 6 eproms, they all test good, and I cleaned and reseated the cpu and pokey.
The issue I'm getting is this: the game plays, but the area that the title appears in (MISSILE COMMAND) stays on the screen, as the bombs blow it up. It never completely goes away... the missiles blow it all to hell, but little fragments stay all over that part of the screen. If you put it into test, it stays there and says rom/map/ram are o.k... if you go back out into the game, it's STILL there. It changes slightly as the missiles blow away bits of it, but some of the explosions stay there, etc. If you start a game, it stays there too. So whatever is supposed to blank that out I guess is messed up. Any ideas?
First thing I'm going to do is replace the sockets on the cpu/pokey, any other suggestions?
