>The calc is: > >( (horizontal pixels) x (vertical pixels) x (bits per pixel aka bit >depth) ) / 8 = memory required to display at that bit depth, in bytes. >Divide again by 1024 for KB. > >So: >( 640 x 480 x 16 ) / 8 = 614400 bytes (which is 600K). > >Therefore, 512K isn't quite enough, sorry to say. > >( 640 x 480 x 8) / 8 = 307200 (300K), so you can get 256 colors (8 bits). > >The bit depth is of course the number of bits (or power of two) required >to get that range of colors in a pixel -- therefore 8 bits = 2^8 = 256 >colors. > >Ivan.
Damn. Thats too bad. I was hoping 512K would be enough so I could try and swap out the 65220 video chip with the video chip from a PB1400 (65225). Now if I could only figure a way to increasew the VRAM on a duo..... Mad Dog ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> RoadTools $30 PodiumPad available at Apple retail stores, $20 Traveler CoolPad at Staples. Both in white for iBooks at <http://roadtools.com> Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
