Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!dogie.macc.wisc.edu!uwvax!daffy!cat54.cs.wisc.edu!pochron From: pochron@cat54.cs.wisc.edu (David Pochron) Newsgroups: comp.sys.amiga Subject: Re: Emulators (Re: NeXT Intro (Was )) Summary: My own experiences with Xfrmr code disassembly... Keywords: Transformer 68030 Doesn't work! Message-ID: <5253@daffy.cs.wisc.edu> Date: 23 Oct 90 18:37:15 GMT References: <1990Oct14.215059.12461@csmil.umich.edu> <38267@ut-emx.uucp> <6811@sugar.hackercorp.com> <3411@corpane.UUCP> <6856@sugar.hackercorp.com> Sender: news@daffy.cs.wisc.edu Organization: U of Wisconsin CS Dept Lines: 24 This past Sunday, I spent the entire day hacking the Transformer 1.2 code to try to get it working with the 68030 CPU - no dice. At first I thought it might be just timing problems - there is lots of CPU-dependant delay loops, and NOP's used for delays. I extended these to match the 68030 clock, but there must be something else going on that I have overlooked. Running with or without cache & burst makes no difference - though I do have to reset the machine once before the DOS screen comes up - perhaps the A2630 board is turning the cache back on? The system gurus after I press return and it reads the IBM command.com disk for a bit - always a guru #8 at C01570! I wish I could see what was causing the problem! I did manage to fix the keyboard routine, though. Now my Cherry keyboard responds to Transformer when run w/ a 68000, and appears to work OK in 68030 mode also. BTW: There are some bogus versions of Transformer labelled 2.2 going around. I used Arp's CMP command on these using the original 1.2 Xfrmr, and the only changes made are in the revision numbers! Don't bother getting 'em! -- ------------------------------------------------------------------------------- David M. Pochron | from Rescue Rangers, _A Fly in the Ointment_ pochron@garfield.cs.wisc.edu| Gadget to Dale: "Keep the hands off the body!" -------------------------------------------------------------------------------