marauder666 Posted March 15, 2022 Share Posted March 15, 2022 (edited) If you've ever seen the threads me and Juansolo have posted you'll have noticed the complaints about the inconsistency of PAL 7800s, especially crashing with a Dragonfly, mainly in Ballblazer. This one is different, in fact, never seen this revision before. It's a 29th week 1989 board, but some of the Fairchild branded logic ICs are for mid 1986. Never had one with Fairchild ICs before. Rockwell CPU, its usually a UM branded one on PAL machines. No issues with this CPU, unlike on some NTSC machines. The RAM is from an unknown manufacturer, dont recognise the logo, its Japanese and the part number seems to indicate Epson. Label on BIOS EPROM, showing more details than just part no. Zero ohm resistor to select it, is mounted vertically on right side of board, usually its angled. Never had that before. No bodges on the back of the board. Soldering is really good, easy to unsolder with no pad damage, some PAL machines have an almost corroded solder on them, and its a real pain to deal with. Had the DF running Ballblazer for hours today, turned it off, restarted, ran for hours again. This hasn't happened on any of the 7800s I've had before. Only weirdness was auto starting Frenzy from the Dragonfly when a Zipstik was plugged in, auto fire off. Didnt happen with a 2600 stick, or the 7800 pad. Need to check that on the NTSC machine. Something about the Zipstik??? Who knows. Zipstik is working fine on the XL, values as expected in the simple basic program. Edited March 15, 2022 by marauder666 2 Quote Link to comment Share on other sites More sharing options...
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