bartonr@jove.cs.pdx.edu (Robert Barton) (04/11/90)
Mon Apr 9 13:44:49 1990 BARRETT%FOREST.ECIL.IASTATE.EDU@cunyvm.cuny.edu (Marc Barrett) writes: > I was told somewhere that the A2360 video board has the ability to emulate > (in software) the current Amiga graphics chipset. Does anyone know if this > will include some of the more exotic functions, such as HAM, Dynamic HAM, > and Dynamic HiRes? Someone might know, but apart from your "somewhere" source no one seems to be talking. Since this isn't a real product now and may never be one, that seems like a good policy to me. > It occurred to me that if the board can switch palettes on the > scanline, it should be able to display up to 196,608 colors at once. Given some way of programming it to do so, and a program to set up all the colors, and a huge amount of memory to store all the palettes, I guess it could. Tue Apr 10 21:03:43 1990 BARRETT%FOREST.ECIL.IASTATE.EDU@cunyvm.cuny.edu (Marc Barrett) writes: > does anyone know whether or not the A2360 ("Lowell") video card has the > ability to accomplish such things as palette-switching (on-the-fly between > scanlines) or HAM modes? Didn't you just ask that same question yesterday? > I was told be [sic] someone (probably not here, though) that this card can > emulate (in software) the current Amiga chipset. If it can really do 1024x768 then yes, you should be able to get it to do 768x480. I'm not sure how you would emulate a blitter in software, though. > If the A2360 can accomplish a normal 320x200 6-bitplane HAM mode, then it > should also be able to accomplish a 1024x768 8-bitplane "Extended HAM" mode > (262,144 colors at once!). I don't see how you arrived at the conclusion that if it can handle a lower resolution it can also handle a higher one. Using 320x200x6 takes 48,000 bytes, 1024x768x8 = 786,432 bytes. That's over 16 times as much data to move around.