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An excellent work. Your list has helped me a lot.

I'm glad to say that Princess Quest for Colecovision has some extras in gameplay , per suggestion of Yurkie and Pixelboy there are hidden chests with prizes and in world 3 is important to find the chests

But do any of the games support the FM music? If not and you aren't interested in music... you might find something that is otherwise compatible at a lower price. To be honest, I liked a lot of the older MSX designs better than the later Sony and Panasonic ones, but to each their own. FWIW, I still bought a Turbo R. Something to consider is where you are from and where the machines come from. For example, if you are from the USA you might want a Japanese model because they use compatible power and a variation of NTSC close enough that it works on US TVs. A machine from Europe or South America might not work out of the box. If you are in Europe, you might not want a Japanese version if there is a European version of the same machine available. BTW, my Turbo R has these nice Japanese menus I can't read. If anyone has a translated ROM I'd be very happy. The problem I'd have with getting anything from Europe is that it would, of course, be PAL. And I don't own a multisystem TV, or a monitor that can accept PAL. Just FYI, the MSX2+ and MSX-Turbo R machines were sold only in Japan, so all are NTSC and 110V. Anyway, if the keyboard has kanji/katakana then it is a Japanese machine (this is valid both for MSX1 and MSX2).

Wasn't Spectravideo the only company to release an MSX machine in the US and it was off the market in under a year? It come very late, when Colecovision already had capitalized the market. The Spectravideo had same video chip, same processor, same sound chip and more expensive and besides it had scarce games and was not compatible with MSX until the SVI-738.

Appears like Pony Canyon got licenses from Activision, them also published Keystone Kapers, Alcazar, Beamrider, Ghostbusters and a lot of titles. Search in this database http://www.generation-msx.nl/msxdb/ Of course mostly for European/Japanese market as MSX didn't have success in North America.

But do any of the games support the FM music? If not and you aren't interested in music... you might find something that is otherwise compatible at a lower price. To be honest, I liked a lot of the older MSX designs better than the later Sony and Panasonic ones, but to each their own. FWIW, I still bought a Turbo R. Something to consider is where you are from and where the machines come from. For example, if you are from the USA you might want a Japanese model because they use compatible power and a variation of NTSC close enough that it works on US TVs. A machine from Europe or South America might not work out of the box. If you are in Europe, you might not want a Japanese version if there is a European version of the same machine available. BTW, my Turbo R has these nice Japanese menus I can't read. If anyone has a translated ROM I'd be very happy. But do any of the games support the FM music? If not and you aren't interested in music... you might find something that is otherwise compatible at a lower price. To be honest, I liked a lot of the older MSX designs better than the later Sony and Panasonic ones, but to each their own. FWIW, I still bought a Turbo R. Something to consider is where you are from and where the machines come from. For example, if you are from the USA you might want a Japanese model because they use compatible power and a variation of NTSC close enough that it works on US TVs. A machine from Europe or South America might not work out of the box. If you are in Europe, you might not want a Japanese version if there is a European version of the same machine available. BTW, my Turbo R has these nice Japanese menus I can't read. If anyone has a translated ROM I'd be very happy. Appears like only floppy disk games use the FM sound, I got it because I wanted to know how it sounds. Besides the MSX2+ scrolling feature is better than the MSX2 (check Konami's Space Manbow that supports both) And also I choosed a Japanese model because in Mexico we use NTSC video standard and same voltage level (110-127 VAC)

I never tried this on HD tv ... Not sure it will work on HD tv ...... As I always used this method on old tv Someone can confirm? My Colecovision works just fine through RF with a recent LCD HD TV, so I suppose an ADAM would work. Only select channel 3 NTSC.

Yep, I've found the link http://www.retroclasificados.com/?o=1&n=15&g=1&s=4&p=1&i=1001 Shipping can have a high price, though.

I'd recommend a Sony HB-F1XDJ MSX2+, incorporates FM music and various people at Spanish forums say that is better than the Panasonic FS-A1 that I was near to buy. Besides it looks great. The only problem I find with these machines is that the floppy disk tends to fail, but as you'll be playing cartridge games there is no problem. You can check some offers at http://www.retroclasificados.com (last time there was a Panasonic for sale)

Those are personal projects The author of Bug's n Bots have just contacted me lately and the website has not been updated yet I figured as much. I was just kidding around. And here's more kidding around (I was in the mood to do this tonight): Very nice graphics

I've tested the Bee emulator, I've played with a lot of settings and it can only run games that are in its database. So I could not play my own games developments Besides it's incredibly slow...

By the way, don't forget to test the RESET pin of Z80, it should be at 5V+ commonly and only change to 0V when pressing the button. A frozen button could get it eternally in RESET.

Not just time to give up. Some ideas to test BIOS. Now you should check the two 74LS138, one is used to decode BIOS memory, RAM and cartridge, and the other is used to decode ports (VDP, PSG, etc) You should be looking for outputs with your oscilloscope, you should see peaks going from 5V+ to near 0V. 1. Check if U5 74LS138 activates output (pin 15) to select BIOS 2. Check if U6 74LS138 activates output (pin 9) to select audio (this happens just after RESET) If outputs doesn't activate, then check the input signals, maybe the 74LS138 doesn't receive the signals. If pass 1 is working, then you should do a continuity check from both 74LS138 to Z80 and BIOS to Z80, check every address and data pin. If every line is right, the you should check every address input and data output with oscilloscope to see changes, in case one data doesn't change it can signal a broken BIOS. If you get pass 2 to work then probably the Colecovision will work I'm suspecting of broken lines in PCB (maybe a scratch). In this case you could use your multimeter as a continuity tester. Another option is oxyde between pins making contact, again use the multimeter.

One week ago I've bought Pacman by $2. I think Combat is around $1.

In fact the Transputer was developed and manufactured by INMOS, and Perihelion was one of the hardware/software makers.

Just check controller configuration, surely you're pushing the second player's button.

First and all I'd suggest to use isopropyl alcohol to clean the PCB from both sides (also RF PCB). I'd start checking the Z80 with a logic tester, first pin 6 (CLK) to see if clock generation is working, then pin 19 (MREQ) for memory access and pin 20 (IORQ) for VDP access. The VDP ALWAYS generates synchro (even if blanking), you should get a black screen with a TV, if you get this then you have all video section working (VDP and RF) The first thing that Coleco BIOS does is to turn off sound, if it doesn't do this (as you said), then the decoders aren't working or the ROM BIOS is damaged. If sound is turned off the next part to check is the 1K RAM. I hope this can help you. Of course, you'll need Colecovision schematics http://atarihq.com/danb/files/colecovision.pdf

For MSX cartridge manufacturing you should contact matracorp@gmail.com If they like one of your games then they handle box design, cartridge manufacturing, assembly and sales without any expense on your side. You should only make the best game you can Also I recommend to select your best games and make videos to run interest checks here in Atariage. Check one sample of Matra with my own game http://www.matranet.net/shockware/pq/index.html (soon it will be available in Colecovision by Team Pixelboy) Check also one sample of Collectorvision with other of my games http://www.collectorvision.com/game-zombnear.htm (it should be available in Summer, appears as retroillucid has a lot of work )

Look at this site in the Colecovision section http://www.atarimax.com/classic/forsale/index.html it has complete Colecovision for USD$50, though not specifies state. I found it lately. From atarimax.com I've ordered the AtariMAX Colecovision SD Cartridge and it works great, specially for development.

I've an unmodded Colecovision and I've saw also bright points on RF, but only from time on time.

Very interesting is that there are three demos and not only one in the site.

I've sent a email to retroillucid several weeks ago and still without answer.