Whoa, thanks for the video link. Objectively, it looks like a very boring and frustrating game to play, but I imagine that technically it was impressive when it came out. I don't imagine that there are many C64 game with free scrolling like that.
Anyway, I hope for your sake that the whole map isn't something like twice the size of what you've mapped so far. How long have you been mapping this considering how much you've done?
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"With the first link, the chain is forged. The first speech censored, the first thought forbidden, the first freedom denied, chains us all irrevocably." [...] The first time any man's freedom is trodden on, we're all damaged. - Captain Jean-Luc Picard
B*tch, meet reality. Reality, meet b*tch. - Me