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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
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From: dempson@atlantis.actrix.gen.nz (David Empson)
Subject: Re: RGB-connection question???
Message-ID: <D0JLvC.J8x@actrix.gen.nz>
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 <jturner@tartarus.uwa.edu.au> 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
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From: dempson@atlantis.actrix.gen.nz (David Empson)
Subject: Re: RGB-connection question??
Message-ID: <D0JnBL.Lnt@actrix.gen.nz>
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 <EUGENE.WELCOME@rook.wa.com> 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