Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!samsung!cs.utexas.edu!hellgate.utah.edu!cc.utah.edu!cc.usu.edu!slsw2 From: SLSW2@cc.usu.edu (Roger Ivie) Newsgroups: comp.sys.laptops Subject: Re: Atari Portfolio Message-ID: <17055@cc.usu.edu> Date: 20 Jan 90 16:53:52 GMT References: <7696@sdcsvax.UCSD.Edu> <12613@udenva.cair.du.edu> <16729@cc.usu.edu> <7712@sdcsvax.UCSD.Edu> Lines: 32 In article <7712@sdcsvax.UCSD.Edu>, butcher@sdcsvax.UCSD.Edu (David Butcher ) writes: > Have you tried it? It doesn't work on the Portfolio at least the one that > Atari gave to me. Ansi ESC codes don't work either. SInce Atari chose a > smaller screen for it's Portfolio the normal BIOS writing does not work as > expected. I've not done extensive work with my Portfolio yet; I've only had it a short time and have been busy with other things. But I did write a small program that turned on a single pixel. Use BIOS calls to put the screen in 40x25 graphics mode and use the set pixel routines. My Portfolio is elsewhere at the moment, so I don't have my source handy. It's a small assembler routine that does just that. The normal BIOS writing works as expected (in my minimal experience) if you bear in mind that the screen is only 40x8. The screen is run in 40x25 text mode by default. I'm also a bit torqued that they didn't give us any escape sequences to run the screen. I plan to write a TSR that takes over the write in teletype mode BIOS function to give some simple escape sequences. That way, I should be able to take old, small, generic DOS programs from my Rainbow and install them to run on the Portfolio without the funky refresh settings. =============================================================================== Roger Ivie 35 S 300 W Logan, Ut. 84321 (801) 752-8633 ===============================================================================