Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!samsung!sol.ctr.columbia.edu!caen!math.lsa.umich.edu!math.lsa.umich.edu!hyc From: hyc@math.lsa.umich.edu (Howard Chu) Newsgroups: comp.sys.atari.st Subject: Re: Tweety Board Message-ID: <1990Nov3.195852.9495@math.lsa.umich.edu> Date: 3 Nov 90 19:58:52 GMT References: <1990Nov2.053703.22616@isc.rit.edu> Sender: usenet@math.lsa.umich.edu Organization: University of Michigan Math Dept., Ann Arbor Lines: 42 In article <1990Nov2.053703.22616@isc.rit.edu> drp9500@isc.rit.edu (D.R. Paradis ) writes: > Does anyone out there have a Tweety Board? I've got one in my Mega. >I want to get one but I would like to hear from a satisfied customer as >to how it both acheives the stereo effect and how it sounds. It would be worthwhile if more software took advantage of it. What it does is very simple. The ST sound chip produces 3 separate channels of sound. The 3 channels are combined in the ST before being fed to the audio-out line. The Tweety Board is mainly a set of small amplifiers, and a piggyback clip. The clip fits over the sound chip, and taking the lines for the 3 sound channels and amplifying them, then feeding it out to 3 RCA jacks. It's not stereo unless the software written for it is stereo. Some games are OK with it, but usually it destroys digitized sound. >Any idea on how much space the things takes up inside? I am planning on >some space-taking upgrades to my 1040 and want to know how big the >sucker is. Or if anyone knows if the 32K colour uprgade & 2Megs of >SIMMS & the Tweety Board will conflict....I don`t have a RF thingy in >there but the space does come in handy.... The clip is the same size as the sound chip, and has a 6 inch flat ribbon cable leading to the amplifier board. That board is about 2 inches by 3 inches, and about 1/2 inch tall. See what you think... >Also...is there ANY way I can upgrade to a 16Mhz 68000 and NOT lose >Spectrum? Can I piggyback the puppies and just use a physical switch to >toggle between them? Two ways - the ICD accelerator lets you run at 8MHz as well as 16. Sounds like lots of people are happy with it, though on GEnie Jim Allen has been hinting that there's a design flaw in the ICD upgrade. (Apparently something Jim encountered when designing the T16, but he hasn't been too explicit.) There is also now an add-on for the T16 called a Whoa-Boy, which will slow the T16 down to 8MHz and make Spectrum stuff work again. -- -- Howard Chu @ University of Michigan Mac// - adv., q.v. MacToo, e.g. McHave a McHappy McDay! McThanks, McYou MacToo!