ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre) (02/16/89)
In article <8902120443.AA12071@wpi> GREYELF@WPI.BITNET writes: >I just figured out how to access the 520 x 384 quadruple hi-res mode on >the Laser, has anyone figured out a way to use this mode for graphics >programs? Wouldn't it be 560x384? How does this work? Does the hardware flip between regular and alternate display pages every 60 hz? (for a 30 hz interlaced display with some flicker, depending on your monitor.) Or do you have to write software (interrupt handlers & such) to do this? $2000-$4000,$4000-$6000 Hex should be the regular and alternate Hires pages in each 64K bank. -- - Ralph W. Hyre, Jr. Internet: ralphw@{ius{3,2,1}.,}cs.cmu.edu Phone:(412) CMU-BUGS Amateur Packet Radio: N3FGW@W2XO, or c/o W3VC, CMU Radio Club, Pittsburgh, PA "You can do what you want with my computer, but leave me alone!8-)" --
kamath@reed.UUCP (Sean Kamath) (02/25/89)
In article <4285@pt.cs.cmu.edu> ralphw@ius3.ius.cs.cmu.edu (Ralph Hyre) writes: >In article <8902120443.AA12071@wpi> GREYELF@WPI.BITNET writes: >>I just figured out how to access the 520 x 384 quadruple hi-res mode on >>the Laser,... >How does this work? Does the hardware flip between regular and alternate >display pages every 60 hz? (for a 30 hz interlaced display with some flicker, >depending on your monitor.) Or do you have to write software (interrupt >handlers & such) to do this? What I want to know is how to fanagle the hardware into letting me see the Page 2 Double Hires on my //e! I keep seeing references to it, but I can't figure it out. One of these days I'll write a program that flips all of the softswitches in weird orders until I see something weird happen. . . :-) Note that this usually happens when you list the $C0XX address space. . . Sean kamath -- UUCP: {decvax allegra ucbcad ucbvax hplabs}!tektronix!reed!kamath CSNET: reed!kamath@Tektronix.CSNET || BITNET: kamath@reed.BITNET ARPA: kamath%reed.bitnet@cunyvm.cuny.edu US Snail: 3934 SE Boise, Portland, OR 97202-3126 (I hate 4 line .sigs!)