Path: utzoo!attcan!uunet!nuchat!sugar!peter From: peter@sugar.hackercorp.com (Peter da Silva) Newsgroups: comp.sys.amiga.tech Subject: Re: Simple Frame Buffer boards Message-ID: <7182@sugar.hackercorp.com> Date: 2 Dec 90 03:41:07 GMT References: <916@boing.UUCP> <23699@grebyn.com> Reply-To: peter@sugar.hackercorp.com (Peter da Silva) Organization: Sugar Land Unix - Houston Lines: 20 In article <23699@grebyn.com> ckp@grebyn.UUCP (Checkpoint Technologies) writes: > The 8 meg expansion address space of the Amiga is too precious to > devote a meg or more of it to "just" a frame buffer. I don't know about that. Every A2000 already has a megabyte allocated to pretty much that very purpose. If you're going to shove more than a few megs of RAM into your 2000 you're likely to be running a 68020 or so and have almost 2 gig of RAM-only address space available on your CPU card. (yes, I know that most 68020 cards don't take advantage of >16M memory, but it's in the CPU's address space and should be used. The only problem with it is that you can't access it from the Zorro bus so you can't DMA to it, but that's a SMOP.) I'd think that paged I/O cards would be a bit of a pain for any hypothectical future device-independent graphics.library, too. Another reason to go to a flat address space, no? -- Peter da Silva. `-_-' .