after i dumped it, i found this youtube-video
the interesting thing, on the youtube-video the Copyright on the titlescreen shows 1989, while the console i dumped shows 1988 on the title-screen. so we knew that another revision of the console exist. this was also written into the source of MESS,so nobody forgets it.
i always thought about this, the last three months and how hard it will be to get the other revision..as most sellers only show the console itself on auctions, but no titlescreen of the running system...
now to the interesting part of this article.
i didn't write the complete story about the yesterdays dump. as i wrote i bought "Game Wizard" cheap on ebay. which is true, but it also included a complete "prof. weiss-alles" console and a second cartridge. today i just checked this console, if it's working...and guess what...it worked! it even showed "1989" on the titlescreen!
ten minutes later i had dumped the bios...runs perfectly in MESS...
after that, i was interested what was changed in this revision. i didn't see any visual differences between the two dumped german roms, while running in MESS.
if you compare the two rom files, it shows up about 5000 differences...so they didn't just change the copyright year...it has to be more. maybe someone will find out later.
here's a shot of the internal pcb:
should get included to MESS soon...
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