Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ncis.llnl.gov!helios.ee.lbl.gov!pasteur!agate!bionet!csd4.milw.wisc.edu!mailrus!cwjcc!tut.cis.ohio-state.edu!cs.utexas.edu!utastro!sjk From: sjk@utastro.UUCP (Scot Kleinman) Newsgroups: comp.sys.cbm Subject: Re: Another info request for old CBM computers Summary: answers to 8096 questions ? Message-ID: <3549@utastro.UUCP> Date: 19 Jan 89 21:26:41 GMT References: <2035@iitmax.IIT.EDU> <448@csd4.milw.wisc.edu> <2748@mibte.UUCP> Organization: U. Texas, Astronomy, Austin, TX Lines: 36 Regarding some 8096 questions. I have a SuperPET, and I believe the 8096 banking is done the same way. You can activate 4k at a time through either $9000 or $a000 (I'm almost sure it's $9000). There are a few pokes which activate any of the given banks through that window, including, if you have them, any toolkit-type ROM. I found this handy, as I have too many ROMS for just the two slots, so I have saved the images to disk (had to disassemble a few of them and change addresses from $axxx to $9xxx) and can load them all in and select which one I want to use with a few pokes. Regarding the speaker, yes it does play music (well sort of). There are two memory locations which control it; one is like a timbre, or octave type thing, and the other is the tone which will be played. You poke in a value, it plays until you poke in another values or a 0. As I am in my office, now, I don't have all there memory locations handy (and I used to know them all by heart, man the things I could get that guy to do ....), but if you need the details, E-Mail me and I can look them up easily enough at home. Regarding the RS-232 interface. I believe a few companies used to make IEEE to RS-232 interfaces, but the one I have came from Skyles' Electric Works in Mountain View, CA (I believe his number is 415-965-1735). It attaches to the parallel port, and has a long cable with an RS-232 connector on the end. It does not continue the port, but I was able to make a connector that has my reset switch and joystick connections, then a passthrough to the RS-232 cable. Bob Skyles's shop is still around, but I don't know if he can make more of these interfaces. You might get him too, if you can talk directly with him. (I don't work for Skyle's or anything, I just think he is a really neat guy who has done a lot for all sorts of Commodore computers (perhaps more than Commodore did in the early days.)) Good luck, E-mail me if you need more info. scot sjk@astro.as.utexas.edu yow!