![]() ![]() Koalapad, graphics tablet, joystick, 8x printers etc). It is therefore bit 7 of the byte in which the bit 0 of the quad determines the color of the latter.Īnd this Video 7 manual (Apple simply rebranded their card) is the definitive reference I think:Įspecially supporting so many hardware add-ons (this RGB Mixed mode, mouse, If bit 7 byte = 1 (color mode) and bit 0 of the quad is in the byte then the quad display is in color. If bit 7 byte = 0 (B&W mode) and bit 0 of the quad is in the byte then the quad display is in B&W. The display mode of the quad (color or B&W) depends on the location of bit 0 of the quad. ![]() This piece is key: (Search for quadruplet which I've replaced with quad for formatting here):Ī quad is either one of 16 colors (1 pixel 4 times wider than high) or 4 bits represented on the screen in B&W. Lots of info about Le Chat Mauve that Google translates very well: Some more references, mainly from this thread where I was digging for more info for the VidHD - which might or might not support this. Given the number of video add-ons that support this capability, and that it was implemented by a specific handshake unlikely to be triggered by existing code, it seems like it would be reasonable to add to AppleWin in isolation w/o claiming full support for emulation of any particular card. This is the one I'm most interested in emulators supporting. Mode 1 is useful for apps that use DHR in monochrome, like Apple II DeskTop / MouseDesk, which initializes the mode, freeing the user from hitting that pesky mono/color toggle. Mode 3 is technically interesting but poorly documented - we lack good reference images to know exactly how things should appear on the boundary. These are accessed by hitting AN3 in the right sequence with 80COL, per the manual Mode 3: Mixed (high bit forces mono on a byte by byte basis) The AppleColor RGB ones are the common subset of most interest: The Extended 80 Column / AppleColor RGB card as well as Video 7 and Le Chat Mauve support a handful of additional graphics modes. ![]()
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