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- Path: sparky!uunet!stanford.edu!agate!kaneko
- From: kaneko@ICSI.Berkeley.EDU (Seiji Kaneko)
- Newsgroups: fj.sys.mac
- Subject: Re: Display mode on Quadra
- Date: 23 Jan 1993 04:27:30 GMT
- Organization: international computer science institute
- Lines: 205
- Message-ID: <1jqhfi$9r6@agate.berkeley.edu>
- References: <1993Jan18.083604.17078@tonengw.tonen.co.jp>
- NNTP-Posting-Host: axiom.icsi.berkeley.edu
-
- In article <1993Jan18.083604.17078@tonengw.tonen.co.jp> hino@tonengw.tonen.co.jp (Yasutoshi Hino) writes:
- >$B#Q#u#a#d#r#a#7#0#0$NI=<(%b!<%I$K$D$$$F65$($F$b$i$$$?$$$H;W$$$^$9!#(B
- >$B#Q#u#a#d#r#a$KFbB!$5$l$F$$$k%S%G%*2sO)$OB?$/$N%b!<%I$r;}$C$F$$$^$9$,!"(B
- >$B$3$l$r<+M3$KA*Br$9$k$3$H$O$G$-$J$$$N$G$7$g$&$+!)(B
- >$B2?$r$d$j$?$$$+$H$$$&$H!"%b%K%?!J#N#A#N#A#O!!#T#5#5#0!!#1#7%$%s%A!K$K(B
- >$BFbB"%S%G%*2sO)$G(B1024x768$B%b!<%I$GI=<($7$?$$$N$G$9!#(B
-
- apple $B$N8x3+;qNA$NCf$K$O!"$3$N%b!<%I$N%5%]!<%H$KBP$9$k5-:\$O$"$j(B
- $B$^$;$s!#%b%K%?%;%s%9$r;H$$@Z$C$F$$$k$N$G!"=PMh$J$$$s$8$c$J$$$G$7(B
- $B$g$&$+!#(B
- $B$3$l$@$1$G$O$"$s$^$j$J$N$G!"(BQuadra $B$N%5%]!<%H%b!<%I$H!"$=$NA*BrJ}(B
- $B$N;qNA$rIU$1$^$9!#$3$l$r;H$($P!"#1#4%$%s%A$N%b%K%?$G$b(B 832*624 $B$,(B
- $B$D$+$($^$9!#$b$A$m$s!"=c@5#1#3%$%s%A$O$@$a$G$9$,!#(B
-
- ---- cut here ---- cut here ---- cut here ---- cut here ------
- > From: Dale_Adams@gateway.qm.apple.com (Dale Adams)
- > Newsgroups: comp.sys.mac.hardware
- > Subject: Mac Quadra Video Explained, Part 2 (long)
- > Date: 25 Nov 91 16:58:24 GMT
- > Organization: Apple Computer, Inc., Cupertino, CA
-
- $BESCfN,(B
-
- STANDARD SENSE CODES:
-
- Sense pins Hor x Vert Dot Vert Horiz
- Display 10 7 4 Pixels Clock Refrsh Refrsh
- ----------- ----------- ---------- ----- ------ ------
-
- Apple 21S Color 0 0 0 1152 x 870 100 75 68.7
-
- Apple Portrait 0 0 1 640 x 870 57.2832 75 68.9
-
- 12" Apple RGB 0 1 0 512 x 384 15.6672 60.15 24.48
-
- Apple 2-Page Mono. 0 1 1 1152 x 870 100 75 68.7
-
- NTSC 1 0 0 underscan-512x384 12.2727 59.94 15.7
- 1 0 0 overscan- 640x480 12.2727 59.94 15.7
- (To produce a color NTSC signal, a RGB-to-NTSC converter is required.)
-
- 12" AppleMonochrome 1 1 0 640 x 480 30.24 66.7 35.0
-
- 13" Apple RGB 1 1 0 640 x 480 30.24 66.7 35.0
-
- Extended sense codes will be examined if the following sense code is
- detected:
- 1 1 1
-
-
- NOTE 1 on above monitors: A sense pin value of 0 means that the pin should
- be grounded to the C&VSYNC.GND signal; a value of 1 means do not connect
- the pin.
-
- NOTE 2 on above monitors: sense pins 4, 7, and 10 are referred to as
- SENSE0, SENSE1, and SENSE2 in pinout tables for the video connectors.
-
- NOTE 3: The terms 'underscan' and 'overscan' are used to describe the
- active video resolution for NTSC and PAL modes. Underscan means that the
- active video area appears in a rectangle centered on the screen with a
- black surrounding area. This ensures that the entire active video area
- always is displayed on all monitors. Overscan utilizes the entire
- possible video area for NTSC or PAL. However, most monitors or
- televisions will cause some of this video to be lost beyond the edges of
- the display, so the entire image will not be seen.
-
-
-
- EXTENDED SENSE CODES:
-
- NOTE for extended sense codes: A sense pin pair value of 0 means those
- pins should be tied together (as opposed to grounding the pins to pin 11);
- a value of 1 means do not connect the pins. Do _not_ wire any of these
- pins to ground.
-
- Sense pins Hor x Vert Dot Vert Horiz
- Display 4-10 10-7 7-4 Pixels Clock Refrsh Refrsh
- ----------- ------------- ---------- ----- ------ ------
-
- 16" Color,
- (i.e., E-Machines) 0 1 1 832 x 624 57.2832 75 49.7
-
- PAL
- PAL has two wiring options, using the extended sense pin configuration.
- To produce a color PAL signal, an RGB-to-PAL converter is required.
-
- PAL Option 1 0 0 0 underscan-640x480 14.75 50 15.625
- overscan-768x576 14.75 50 15.625
- Note: This configuration does not presently doesn't support 24 bits per
- pixel.
-
- PAL Option 2 1 1 0 underscan-640x480 14.75 50 15.625
- overscan-768x576 14.75 50 15.625
- Note: This sense code also requires a diode between sense pins 10 & 7,
- with anode towards pin 7, cathode towards pin 10.
-
-
- VGA 1 0 1 640 x 480 25.175 59.95 31.47
-
- SVGA 1 0 1 800 x 600 36 56 35.16
- To enable SVGA, after configuring and connecting the monitor for VGA, open
- the Monitors control panel and select Options. Choose Super VGA from the
- dialog and reboot your system.
-
- No external monitor (video halted)
- 1 1 1
-
-
-
- Here are the Macintosh Quadra video connector pinouts:
-
- Pin Signal Description
- ----- ----------- ----------------------------------------
- 1 RED.GND Red Video Ground
- 2 RED.VID Red Video
- 3 CYSNC~ Composite Sync
- 4 MON.ID1 Monitor ID, Bit 1 (also known as SENSE0)
- 5 GRN.VID Green Video
- 6 GRN.GND Green Video Ground
- 7 MON.ID2 Monitor ID, Bit 2 (also known as SENSE1)
- 8 nc (no connection)
- 9 BLU.VID Blue Video
- 10 MON.ID3 Monitor ID, Bit 3 (also known as SENSE2)
- 11 C&VSYNC.GND CSYNC & VSYNC Ground
- 12 VSYNC~ Vertical Sync
- 13 BLU.GND Blue Video Ground
- 14 HSYNC.GND HSYNC Ground
- 15 HSYNC~ Horizontal Sync
- Shell CHASSIS.GND Chassis Ground
-
-
-
- If your monitor is a VGA type, you can try the following cable pinouts.
-
- Macintosh Quadra VGA Connector
- DB-15
- ------------- --------------
-
- 2 ------------------- Red Video ------------ 1
- 1 ------------------- Red Ground ----------- 6
- 9 ------------------- Blue Video ----------- 3
- 13 ------------------- Blue Ground ---------- 8
- 5 ------------------- Green Video ---------- 2
- 6 ------------------- Green Ground --------- 7
- 15 ------------------- Hsync ---------------- 13
- 12 ------------------- Vsync ---------------- 14
- 14 ------------------- Sync Ground ---------- 10
- 10 ------------------|
- 7 ------------------| Connect 7 and 10 so the sense pin ID will equal VGA
-
- There are a few issues to keep in mind with VGA monitors:
-
- * VGA monitors will vary depending on the vendor. Check with the vendor
- about Macintosh Quadra compatibility before buying, or better yet,
- actually try the monitor with a Quadra to see if it works and if the
- quality is acceptable.
-
- * Vendors have different image quality specifications. There may be
- significant differences between Apple monitors and the wide range of
- VGA monitors. Do a side-by-side comparison of the monitors you are
- considering before buying.
-
- * Many third party cable vendors have off-the-shelf cables that should
- work.
-
-
-
- Most NTSC devices use an RCA-type phono-connector and the following
- diagram uses that as a reference point. A cable wired as follows may
- allow many different brands of NTSC monitors to work on a Macintosh
- Quadra. I would advise you to test the monitor on a Macintosh Quadra
- prior to purchase to see if it meets your expectations.
-
- Adjust the phono-connector side to whatever type of connector is used
- (RCA, BNC, etc.). "Tip" is the pin in the center of the connector (the
- signal); the sleeve is flange around the outer edges of the connector (the
- chassis ground).
-
- Card Connector RCA-Type Phono-Connector
- -------------- ------------------------
- 4 MON.ID1 (sense0) --|
- 7 MON.ID2 (sense1) --|
- 11 C&VSYNC.GND --------|
-
- 5 GRN.VID -----------------> Tip (signal)
- Shell CHASSIS.GND --------------> Sleeve (ground)
-
- By grounding pin 4 and pin 7 to pin 11, the Macintosh Quadras are told that
- an NTSC monitor is attached. The actual black and white video signal is
- on pin 5 and connects to the center (Tip) of the phono-plug. The shell of
- the card connector connects to the sleeve of the phono-plug.
-
- To acquire a color NTSC signal from a Quadra (or any Apple Macintosh
- display card), an RGB-to-NTSC converter is required, such as those
- available from RasterOps, Truevision, and Computer Friends. Sorry, but I
- do not have the cable requirements for any of these devices.
-
- *********************************************************************
- * Dale Adams * Opinions expressed are not necessarily *
- * Apple Computer, Inc. * those of my employer. *
- *********************************************************************
-
- --
- Seiji Kaneko kaneko@sdl.hitachi.co.jp,kaneko@halsp.hitachi.com
- -------- --------- -------- $B%K%e!<%9%j%O%S%jCf(B (^_^)
-