Newsgroups: comp.sys.apple2 Path: blue.weeg.uiowa.edu!news.uiowa.edu!uunet!usc!crash!pro-dan!danb From: vmbb!pro-newton!pro-dan!danb (Dan Brown) Subject: Re: Sound Pins Organization: ProLine [pro-dan] -- Hesperia, CA Date: Sun, 23 Oct 94 12:18:49 PDT Message-ID: References: <38423f$obc@hptemp1.cc.umr.edu> Lines: 24 In <38423f$obc@hptemp1.cc.umr.edu> mikul@rocket.cc.umr.edu (Keith Mikulich) writes: >Does anybody know the pin layout of the (8 pins, I think) external sound >plug? If not, is there a Technote somewhere? Apple IIgs Hardware Reference Manual, Second Edition, page 119: Signal Pin Maximum Units A/D Converter input 1 2.5 V Peak-peak Input Impedance 1 3,000 Ohms Analog GND 2 - - Analog Output 3 -5 to +5 V peak-peak Output load 3 10,000 Ohms, minimum Channel address 0 4 1 LS TTL Load Channel address 1 5 1 LS TTL Load Channel Strobe 6 1 LS TTL Load Channel address 2 7 1 LS TTL Load -- Dan Brown, KE6MKS pro-dan!danb@pro-newton.cts.com Don't Tread on Me.