Path: csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!news.glorb.com!xmission!news.bbs-scene.org!macgui.com!dog_cow From: dog_cow@macgui.com (D Finnigan) Newsgroups: comp.sys.apple2.programmer Subject: Re: RAINBOW: a "floating bus" example Date: Fri, 20 Jan 2012 19:09:18 +0000 (UTC) Organization: Mac GUI Lines: 35 Message-ID: References: <21d83758-2cfa-4e9c-949b-6af34faf4f1a@d6g2000pra.googlegroups.com> <702c6a1c-16e5-43fc-90ab-9ae3a4fdb08e@q8g2000yqa.googlegroups.com> NNTP-Posting-Host: gunshin.wiredns.net Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: news.bbs-scene.org 1327086558 5583 74.119.145.48 (20 Jan 2012 19:09:18 GMT) X-Complaints-To: abuse@bbs-scene.org NNTP-Posting-Date: Fri, 20 Jan 2012 19:09:18 +0000 (UTC) User-Agent: Mac GUI City Usenet Posting Xref: x330-a1.tempe.blueboxinc.net comp.sys.apple2.programmer:118 BLuRry wrote: > On Jan 19, 2:50 pm, dog_...@macgui.com (D Finnigan) wrote: >> BLuRry wrote: >> > Is it supposed to look like this? (sorry for the horrible-looking URL) >> >> Nay. >> >> The machine code adds 2 extra bars in that middle black space. >> >> If one holds the reset key (or Control-Reset, if you've got your switch >> that >> way), the machine code halts, and the two bars disappear from the screen. >> > > Hmmmm.... If I adjust my timing up or down it no longer holds still > and flickers a lot. I know that my floating bus code is doing > *something* otherwise I wouldn't see it at all. :-D Anyway, looks > like what I implemented is similar to what KEGS does. > KEGS? Even a real IIgs doesn't do the same thing as a real II Plus. I saved the RAINBOW program on a 5.25" disk so I wouldn't have to type it again. I loaded it on the IIgs. The results were... we shall say... interesting. On Fast speed (that's 2.8 MHz for me) there was quite a bit of screen flickering. On normal speed, the flickering was less so, and was isolated the right side of the screen. -- ]DF$ Mac GUI Vault - A source for retro Apple II and Macintosh computing. http://macgui.com/vault/