paulr@syma.sussex.ac.uk (Paul T Russell) (05/26/90)
How does the Apple 8.24 video board know what sort of monitor
it is connected to ? Presumably it's something to do with the
way the cable is wired ? I'd like to persuade my 8.24 board to
drive a 75 Hz monitor if possible.
Incidentally, I notice that option-clicking the options button
in the Monitors cdev gives a scrolling list of possible monitors
that the card could be connected to. However there's only one
entry in this list, "Apple Hi-Res Monitor" - is it possible to
install other entries into this list, I wonder ?...
//Paul
--
Paul Russell, Department of Experimental Psychology
University of Sussex, Falmer, Brighton BN1 9QG, England
Janet: paulr@uk.ac.sussex.syma Nsfnet: paulr@syma.sussex.ac.uk
Bitnet: paulr%sussex.syma@ukacrl.bitnet Usenet: ...ukc!syma!paulrmarc@Apple.COM (Mark Dawson) (05/27/90)
In article <2744@syma.sussex.ac.uk> paulr@syma.UUCP (Paul Russell) writes: >How does the Apple 8.24 video board know what sort of monitor >it is connected to ? Presumably it's something to do with the >way the cable is wired ? I'd like to persuade my 8.24 board to >drive a 75 Hz monitor if possible. > There are sense bits in the monitor (not in the cable). >Incidentally, I notice that option-clicking the options button >in the Monitors cdev gives a scrolling list of possible monitors >that the card could be connected to. However there's only one >entry in this list, "Apple Hi-Res Monitor" - is it possible to >install other entries into this list, I wonder ?... > I think that this really is a what-monitor-is-connected field. It will change depending upon what monitor you have connected. Mark -- --------------------------------- Mark Dawson Service Diagnostic Engineering AppleLink: Dawson.M Apple says what it says; I say what I say. We're different ---------------------------------
paulr@syma.sussex.ac.uk (Paul T Russell) (05/27/90)
From article <41382@apple.Apple.COM>, by marc@Apple.COM (Mark Dawson): > There are sense bits in the monitor (not in the cable). > So how do I find out which pins need to be connected in order to make the video board think it is driving a particular monitor ? Is there going to be a set of hardware notes available from APDA ? > I think that this really is a what-monitor-is-connected field. It will > change depending upon what monitor you have connected. > It looks like a scrolling *list*, even though it currently only has one entry there is plenty of room for more entries in the list. In the absence of any technical information I guess I'll just have to experiment... //Paul -- Paul Russell, Department of Experimental Psychology University of Sussex, Falmer, Brighton BN1 9QG, England Janet: paulr@uk.ac.sussex.syma Nsfnet: paulr@syma.sussex.ac.uk Bitnet: paulr%sussex.syma@ukacrl.bitnet Usenet: ...ukc!syma!paulr
pierce@radius.com (Pierce T. Wetter III) (05/31/90)
paulr@syma.sussex.ac.uk (Paul T Russell) writes: >How does the Apple 8.24 video board know what sort of monitor >it is connected to ? Presumably it's something to do with the >way the cable is wired ? I'd like to persuade my 8.24 board to >drive a 75 Hz monitor if possible. Certain lines are pulled high and low by the monitor. Three lines encode 8 different monitor types. Pierce -- My postings are my opinions, and my opinions are my own not that of my employer. You can get me at radius!pierce@apple.com. (Wha'ja want? Some cute signature file? Hah! I have real work to do.