Path: blue.weeg.uiowa.edu!news.uiowa.edu!hobbes.physics.uiowa.edu!math.ohio-state.edu!howland.reston.ans.net!news.sprintlink.net!nwnexus!rook!eugene.welcome From: EUGENE.WELCOME@rook.wa.com (eugene welcome) Newsgroups: comp.sys.apple2 Subject: RGB-connection question?? Message-ID: <10DC16A9@rook.wa.com> Date: Fri, 09 Dec 1994 06:15:34 GMT Organization: Knight-Line! (206) 565-0594 Distribution: world Lines: 61 >Hello, I have a friend with an Apple 2c+. I asked me what the pin >configuration is,but I honestly have no idea. Hi Joe: Here is what I have on the IIc and Laser128 as they were the same. I took this from a larger posting that shows all the Apple II series Serial connectors from DB25 to the newer Mini-Din8 connectors plus their signal identifications. This happens to include the IIgs RGB but not the IIe RGB info I am presently tracking down to update this part of my file. If anyone is interested I can post the entire serial connectors with pin outs. Gene. K7EEK eugene.welcome@rook.wa.com Apple RGB Connections The RGB port on the IIgs has the following output: This is not the same for the Apple IIe. I do not have info on the IIe RGB port and do not know if the IIc RGB port is the same. The Apple IIc and Laser 128 are also shown. Apple IIgs RGB Apple IIc and Laser-128 RGB Pin Signal Pin Signal === ====== === ====== 1 Ground 1 Intensity signal 2 Red analog video 2 F14M - 14 MHz 3 Composite sync 3 Red - signal 4 Not connected 4 Blue - signal 5 Green analog video 5 Spkr sound output 6 Ground 6 Load Pulse for LCD 7 -5 volts 7 Dispen for LCD 8 +12 volts 8 +12 volts DC 9 Blue analog video 9 Horizontal Sync Signal 10 Not connected 10 Composite Video Sync Signal 11 Sound 11 Serial out - Data for LCD 12 Composite video (NTSC, PAL, 12 Composite Video Output or SECAM ) 13 Ground 13 Ground 14 Vertical Sync Signal 14 Not connected 15 Green - Signal 15 Not connected Note LCD = Liquid Crystal Display ====================================================================== Female DB-15. Chassis Connector 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 _________________ _________________ ( O O O O O O O O ) ( O O O O O O O O ) \_O_O_O_O_O_O_O_/ \_O_O_O_O_O_O_O_/ 1 1 1 1 1 1 0 0 1 1 1 1 1 1 5 4 3 2 1 0 9 9 0 1 2 3 4 5 Socket View Soldered End ==================================================== Male DB-15. Cable Connector 1 2 3 4 5 6 7 8 8 7 6 5 4 3 2 1 _________________ _________________ ( o o o o o o o o ) ( O O O O O O O O ) \_o_o_o_o_o_o_o_/ \_O_O_O_O_O_O_O_/ 0 1 1 1 1 1 1 1 1 1 1 1 1 0 9 0 1 2 3 4 5 5 4 3 2 1 0 9 Pin View Soldered End Newsgroups: comp.sys.apple2 Path: blue.weeg.uiowa.edu!news.uiowa.edu!hobbes.physics.uiowa.edu!math.ohio-state.edu!howland.reston.ans.net!wupost!waikato!comp.vuw.ac.nz!actrix.gen.nz!dempson From: dempson@atlantis.actrix.gen.nz (David Empson) Subject: Re: RGB-connection question??? Message-ID: Nntp-Posting-Host: atlantis.actrix.gen.nz Sender: news@actrix.gen.nz (News Administrator) Organization: Actrix - New Zealand Internet Service Providers Date: Fri, 9 Dec 1994 12:11:35 GMT References: <3c7034$oh3@styx.uwa.edu.au> Lines: 25 In article <3c7034$oh3@styx.uwa.edu.au>, Joseph Turner wrote: > Hello, I have a friend with an Apple 2c+. I asked me what the pin > configuration is,but I honestly have no idea. Is there anyone who help us > to determine the pin configuration? ANY help will be appreciated. First, I should correct a misconception: the video port on the back of the IIc+ is _not_ an RGB port. It is a video expansion port, which provides all of the internal video generation signals used by the IIc/IIc+ which can be used to generate an alternative video output signal. To produce RGB output (or anything else) from this port, you need an external adaptor box which generates the appropriate video signals. I believe there is (or was) an RGB output adaptor for the IIc, which should also work on the IIc+. This adaptor is not simple: it has to decode the colour information from the NTSC video signal (or generate it by detecting the graphics mode and monitoring bit patterns), generate appropriate sync signals, etc. -- David Empson dempson@actrix.gen.nz Snail mail: P.O. Box 27-103, Wellington, New Zealand Newsgroups: comp.sys.apple2 Path: blue.weeg.uiowa.edu!news.uiowa.edu!uunet!gatech!howland.reston.ans.net!wupost!waikato!comp.vuw.ac.nz!actrix.gen.nz!dempson From: dempson@atlantis.actrix.gen.nz (David Empson) Subject: Re: RGB-connection question?? Message-ID: Nntp-Posting-Host: atlantis.actrix.gen.nz Sender: news@actrix.gen.nz (News Administrator) Organization: Actrix - New Zealand Internet Service Providers Date: Fri, 9 Dec 1994 12:42:56 GMT References: <10DC16A9@rook.wa.com> Lines: 73 In article <10DC16A9@rook.wa.com>, eugene welcome wrote: > >Hello, I have a friend with an Apple 2c+. I asked me what the pin > >configuration is,but I honestly have no idea. > > Hi Joe: Here is what I have on the IIc and Laser128 as they were the > same. [snip] The information in your post about the IIc video port is WRONG! It may be correct for the Laser 128. The IIc's video port has a set of internal signals. The pins listed here might be correct for an RGB adaptor attached to the IIc video port, but the video port itself does NOT have any of the signals expected by an RGB monitor (they have to be generated by an adaptor). The following table (from your post) is correct for the IIgs, but most of the listed signals for the IIc are wrong. > Apple IIgs RGB Apple IIc and Laser-128 RGB > Pin Signal Pin Signal > === ====== === ====== > 1 Ground 1 Intensity signal > 2 Red analog video 2 F14M - 14 MHz > 3 Composite sync 3 Red - signal > 4 Not connected 4 Blue - signal > 5 Green analog video 5 Spkr sound output > 6 Ground 6 Load Pulse for LCD > 7 -5 volts 7 Dispen for LCD > 8 +12 volts 8 +12 volts DC > 9 Blue analog video 9 Horizontal Sync Signal > 10 Not connected 10 Composite Video Sync Signal > 11 Sound 11 Serial out - Data for LCD > 12 Composite video (NTSC, PAL, 12 Composite Video Output > or SECAM ) 13 Ground > 13 Ground 14 Vertical Sync Signal > 14 Not connected 15 Green - Signal > 15 Not connected Note LCD = Liquid Crystal Display The actual functions of the IIc video port are as follows: 1 TEXT Indicates text mode is active (special function in DHR mode) 2 14M 14 MHz clock sigal 3 SYNC Horizontal and vertical sync 4 SEGB Vertical counter signal from IOU, or lo-res indication 5 1VSOUND Sound output (one volt peak-to-peak) 6 LDPS Video shift load enable 7 WNDW Active area display blanking 8 +12V +12 volts DC 9 PRAS RAM row address strobe 10 GR Graphics mode enable 11 SEROUT Serialized character generator output 12 NTSC Composite NTSC video output 13 GND Ground reference 14 VIDD7 Bit 7 of video shift latch (for hires mode colour shifting) 15 CREF Colour reference timing signal These come from the IIc Technical Reference, both first and second editions. It is odd that your listing for the IIc is correct for some of the signals, but has RGB outputs in place of the IIc's timing signals. You cannot connect a monitor directly to the IIc video port (with the possible exception of the the LCD display, or an NTSC monitor). An adaptor is required to generate the appropriate video signals for an RGB monitor. -- David Empson dempson@actrix.gen.nz Snail mail: P.O. Box 27-103, Wellington, New Zealand