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Joined: May 2010
Posts: 1,051
Very Senior Member
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OP
Very Senior Member
Joined: May 2010
Posts: 1,051 |
It's the black one. I've actually bought 2 black ones and 2 grey ones now. I first got a grey one and I torched the COP444L and couldn't see the ROM bits (although I think I can now), so I bought another. LN posted the COP dumping info, and by dumb luck the 2nd one was also grey and I dumped the COP electronically. I saw a teardown of a black one on youtube that showed the TI chip, so I bought one of those, but plastic stuck to the die and I roasted it trying to get it off. I bought another along with Head-to-Head baseball and football games. I'm surprised the TI version is older than the COP version- game over on the COP is very irritating; it keeps beeping over and over again. The TI version only does one set of beeps. Also, the overlay graphics on the grey one look more like the arcade space invaders. I figured they got in trouble because the graphics were similar and had to change them. I uploaded scans of the overlays: www.seanriddle.com/entexspaceinvader.jpgI shot some cellphone video of it in Amateur and Pro mode if that would help you with timing.
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Joined: Mar 2015
Posts: 240 Likes: 3
Senior Member
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Senior Member
Joined: Mar 2015
Posts: 240 Likes: 3 |
[quote=seanriddle]Rik had pics of the inside of "monster burger" (and there's 3 other games in this series) with a D1080 in it, which is totally undocumented too.
No clue what it is, except it must be a 4 bit CPU with LCD drivers. Mr. Do/Mr. Go (from that same series) is even more cryptic, although I suspect it's probably the same CPU: Other side: The Monster Burger pics are in that same folder...
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Joined: Mar 2002
Posts: 1,368 Likes: 120
Very Senior Member
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Very Senior Member
Joined: Mar 2002
Posts: 1,368 Likes: 120 |
The tidbit that the grey version is newer than the black one is on Rik's site, especially this part: "Interesting note: the second wasn't supposed to be gray, someone accidently trans-posed 2 numbers on the paperwork where the Pantone color code was listed (it was supposed to be the same black color)" http://www.handheldmuseum.com/Entex/SI.htmYes, a recording of the game on ama/pro would be useful =) I can determine MCU speed change by sound pitch.
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Joined: May 2010
Posts: 1,051
Very Senior Member
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OP
Very Senior Member
Joined: May 2010
Posts: 1,051 |
OK, I posted the video. It's pretty boring- I turn on the game in amateur mode and let it kill off my men to get to the game over tones, then turn it off and back on in pro mode. www.seanriddle.com/entexsiti.mp4
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Joined: Mar 2002
Posts: 1,368 Likes: 120
Very Senior Member
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Very Senior Member
Joined: Mar 2002
Posts: 1,368 Likes: 120 |
Thanks, it's added to MESS and working. The overlay will have to be external artwork.
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Joined: Mar 2002
Posts: 1,368 Likes: 120
Very Senior Member
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Very Senior Member
Joined: Mar 2002
Posts: 1,368 Likes: 120 |
I found a video that shows Entex Pacman 2 demo mode, and can confirm that it's wrong in MESS. I tried changing a few things like initial RAM contents and register values, but the only thing that changes demo mode behaviour is opcode/interrupt timing.
It means timer interrupts happen 1 or 2 cycles too late/too early, and/or one of the opcodes takes more cycles than stated in Hitachi docs.
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Joined: Mar 2002
Posts: 1,368 Likes: 120
Very Senior Member
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Very Senior Member
Joined: Mar 2002
Posts: 1,368 Likes: 120 |
anyone recognize this unknown target shooting game of my childhood? http://imgur.com/mltk2Nj
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Joined: Mar 2006
Posts: 1,079 Likes: 6
Very Senior Member
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Very Senior Member
Joined: Mar 2006
Posts: 1,079 Likes: 6 |
Mr. Do/Mr. Go (from that same series) is even more cryptic, although I suspect it's probably the same CPU: Other side: The Monster Burger pics are in that same folder... That CPU reminds me of the one from Mickey & Donald Game&Watch, which is a sharp cpu. LN
"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
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Joined: Mar 2015
Posts: 240 Likes: 3
Senior Member
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Senior Member
Joined: Mar 2015
Posts: 240 Likes: 3 |
I found a video that shows Entex Pacman 2 demo mode, and can confirm that it's wrong in MESS. I tried changing a few things like initial RAM contents and register values, but the only thing that changes demo mode behaviour is opcode/interrupt timing.
It means timer interrupts happen 1 or 2 cycles too late/too early, and/or one of the opcodes takes more cycles than stated in Hitachi docs. Oh cool, glad you found a video. I was going to try to get one recorded this weekend. Do you still need something video'd, or is the YouTube video good enough?
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Joined: Mar 2002
Posts: 1,368 Likes: 120
Very Senior Member
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Very Senior Member
Joined: Mar 2002
Posts: 1,368 Likes: 120 |
nop, not needed anymore =)
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