AWCTTYPA@UIAMVS.BITNET ("David A. Lyons") (10/06/88)
>Date: Tue, 27 Sep 88 22:49:00 PST >From: "Scott, > part time fuzzy" > <SELLSWORTH%HMCVAX.BITNET%cunyvm.cuny.edu@BRL.MIL> >Subject: GS/OS >First, what is the user impression of GS/OS? Is it worth driving all >over the city to find a dealer with a copy? How 'bout the manuals >for the fledgling developer? Yes. Drive around and get one (or order it from APDA). No idea about the user manuals, but you definitely want the Reference manual from APDA if you're developing software for it. You'll miss out on a lot of fun new stuff if you limit yourself to the old ProDOS 16 calls. >Third, has there been any incompatibilities with Davex, my favorite >command shell (plug plug plug :-)) The only incompatibility I know of is when you try to boot right into Davex under System Disk 4.0. Turns out there's a problem with the way the "boot thermometer" works (it isn't really a thermometer if you ask me...it doesn't get Hotter and Hotter until the boot is complete, so I call it a "progress bar" instead, but everybody else calls it a thermometer). ANYWAY...there's an interrupt routine getting called every 60th of a sec to update that bar, and the routine LIVES IN BANK 0 and can get OVERWRITTEN by a ProDOS 8 startup application if it's long enough (more than about $5000 bytes, which Davex is definitely longer than). Result is a fatal error from the damaged interrupt queue, and you have to reboot (from another disk). For now, if you want to boot into Davex, you can boot through BASIC.SYSTEM--just set up a STARTUP program that goes HOME and ?CHR$(4);"-DAVEX/DAVEX" or whatever. Clearing the screen convinces the interrupt routine it's time to clear out of the way. (I've described the problem to Apple and they've described it as a "limitation." I believe and hope that this limitation will be removed in the next System Disk release.) > Scott > bitnet: SELLSWOR@HMCVAX --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