AWCTTYPA@UIAMVS.BITNET ("David A. Lyons") (03/21/89)
>Date: Tue, 21 Mar 89 07:34:09 GMT >From: Matt Deatherage <mattd@APPLE.COM> >Subject: Re: Page Flipping. > > [...] >Peter Baum (the man who discovered Double Hi-Res in the first place, and >in the second) told me once that you can access DHGR page two, but you have >to be sure the 80-column FIRMWARE is off. > >Unfortunately, that's all I remember, and I haven't had time to go mucking >about with it lately. But it's a start. I have _not_ tried this, but I think the deal is that PAGE1 and PAGE2 ($C054 and $C055) will flip double-hires pages iff (if and only if) 80STORE is turned off. Once you've flipped to the page you want to show, you can turn 80STORE back on, at which time PAGE1 and PAGE2 determine whether you're reading/writing main or auxiliary memory. >Matt Deatherage, Apple Computer, Inc. >[...] >Usenet: mattd@apple.com Matt--I'm about 89% sure that "mattd@apple.com" is an Internet address and not a Usenet address. But then I don't have much of an idea what Usenet really is. --David A. Lyons bitnet: awcttypa@uiamvs DAL Systems CompuServe: 72177,3233 P.O. Box 287 GEnie mail: D.LYONS2 North Liberty, IA 52317 AppleLinkPE: Dave Lyons
SEWALL@UCONNVM.BITNET (Murph Sewall) (03/22/89)
>Matt--I'm about 89% sure that "mattd@apple.com" is an Internet >address and not a Usenet address. But then I don't have much of an >idea what Usenet really is. "USENET" is a "news" distribution system, often associated with but NOT identical to, UUCP (which isn't really a network in the sense of the Internet, csnet, or BITNET). USENET is available (can be made available) to sites that aren't part of UUCP, and not every UUCP node carries USENET (amusing huh, "useNET" isn't really a "net" :-) Apple's computer is on BOTH the Internet and UUCP. username@Apple.COM is an Internet address (one that works from BITNET, by the way since an MX record is not required). According to psuvax1's pathalias generator, the nearest UUCP backbone is 'ames' and the path is ames!claris!apple!username (ames!apple!username is sufficient, because the 'ames' mailer also is capable of generating paths for UUCP nodes -- I gather that most backbone sites can do that). Murph Sewall Vaporware? ---> [Gary Larson returns 1/1/90] Prof. of Marketing Sewall@UConnVM.BITNET Business School sewall%uconnvm.bitnet@mitvma.mit.edu [INTERNET] U of Connecticut {psuvax1 or mcvax }!UCONNVM.BITNET!SEWALL [UUCP] -+- I don't speak for my employer, though I frequently wish that I could (subject to change without notice; void where prohibited) According to the American Facsimile Association, more than half the calls from Japan to the U.S. are fax calls. FAX it to me at: 1-203-486-5246
hentosh@amethyst.bucknell.EDU (03/22/89)
> >I have _not_ tried this, but I think the deal is that PAGE1 and PAGE2 >($C054 and $C055) will flip double-hires pages iff (if and only if) >80STORE is turned off. Once you've flipped to the page you want to >show, you can turn 80STORE back on, at which time PAGE1 and PAGE2 >determine whether you're reading/writing main or auxiliary memory. > > --David A. Lyons bitnet: awcttypa@uiamvs > DAL Systems CompuServe: 72177,3233 > P.O. Box 287 GEnie mail: D.LYONS2 > North Liberty, IA 52317 AppleLinkPE: Dave Lyons > I have tried this and could not get is to display page two (which should be from $4000 to $5FFF like it says on all the memory maps in the IIGS Hardware Manual). I also to a look at Apple IIe technote #3 which talks about double Hi-Res and how to access both pages. (It says to do the same thing as above). But while reading the IIgs Hardware Reference (p71 (middle of page) I noticed for the first time this: "All of the display modes execpt 80-column text mode and Double Hi-Res and Super Hi-Res graphic modes can use either of 2 display pages." So which is right? The rest of the book shows TWO pages for double hi-res in all the figures and tables, and the IIe technote describes how to access the second page, but I can't get it. So is there another soft switch that needs setting? Or is this an incompatablility between the two machines.... HELP! Thanks again, Bob ----------------------------------------------------------------------------- BITNET: hentosh@amethyst.bucknell.edu | Disclaimer : "I don't know why I ALPE : RobertH128 | said that... I think it came from | the fillings in my rear molars." -----------------------------------------------------------------------------