From: Greg King (gngking_at_erols.com)
Date: 2003-09-17 12:34:36
From: Laze Ristoski; on Date: Wednesday, September 03, 2003, 02:23 PM > Long story short: In char. mode, VIC makes C-accesses to > read characters. The memory address which is G-accessed is > determined by: base_of_charset + 8 * char_code + RC. > How is the memory address determined with bitmap? It looks to me as though the bit-map holds patterns for a "phantom" character-set. In graphics mode, the VIC-II pretends that it is displaying a text-screen that has an ascending sequence of character-codes -- from $000 in the top, left corner to $3E7 in the bottom, right corner. So, the graphics formula is an extension of the text formula. char_code = int(y / 8) * 40 + int(x / 8) Message was sent through the cbm-hackers mailing list
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