🚀 go-pugleaf

Tom Berriman <Frogoz@xplt.demon.co.uk> wrote:

> Can anyone help me find info on an adaptor that Apple claim exists which
> allows me to plug my PB 160's monitor out port into a 16" RGB Monitor
> (1710 without AppleVision hardware), not the powerbook tail thing, but an
> actual adaptor as my PB can only handle 640x480, and the monitor only
> displays 832x624. I guess it cuts some size down somewhere. Either way I
> don't care what it does, so long as it does it. I need that monitor

GURU <http://www.newertech.com> [1] says the "Display adaptor
is required for *Multiple-scan* monitors at 832x624" (my emphasis)

My old 165c would do 832x624 on an *old*, non-multi-scan Apple
16" monitor, but only in 256 colours. (but that's all the
resolution the monitor would do anyway)

If it's an old monitor, then it should work, but if its's
the newer (ISTR 15" or 17") multi-scan one, then I'd call
someone like MacLine for the Multi-scan adaptor.

I don't remember any Apple multi-scan monitors around for Macs
in 1992/93 (when the PB160 was current), so the adaptor is
probably a third party product.

rgds, Alan
[1] no connection with my posting host, Honest!, for any header-readers.

Tom Berriman <Frogoz@xplt.demon.co.uk> wrote:

> Can anyone help me find info on an adaptor that Apple claim exists which
> allows me to plug my PB 160's monitor out port into a 16" RGB Monitor
> (1710 without AppleVision hardware), not the powerbook tail thing, but an
> actual adaptor as my PB can only handle 640x480, and the monitor only
> displays 832x624. I guess it cuts some size down somewhere. Either way I
> don't care what it does, so long as it does it. I need that monitor

I used to have a PowerBook 180 which I connected to a Sony 15sf using a
VGA adaptor with a little knob for changing resolutions; the resolutions
available that were usable by the PowerBook were either 640x480 or
832x624 (processor cycling is switched on when using the higher
resolution). Because the resolutions are set by the adaptor, one can't
change resolutions on the fly.

The difference between the Sony monitor and the Apple is that the Sony
has a VGA plug and the Apple doesn't. However, the 1710 monitor comes
bundled with a VGA adaptor, and if you added this on to the switchable
VGA adaptor, I see no reason why this wouldn't work, though it's not an
elegant solution.

If you wish to try this solution out, I have both adaptors which are of
no use to me anymore.

In article <Frogoz-2411972237450001@xplt.demon.co.uk>,
Frogoz@xplt.demon.co.uk (Tom Berriman) wrote:

> Can anyone help me find info on an adaptor that Apple claim exists which
> allows me to plug my PB 160's monitor out port into a 16" RGB Monitor
> (1710 without AppleVision hardware), not the powerbook tail thing, but an
> actual adaptor as my PB can only handle 640x480, and the monitor only
> displays 832x624. I guess it cuts some size down somewhere. Either way I
> don't care what it does, so long as it does it. I need that monitor

The PB160 can output video at up to 832x624. Unfortunately, it doesn't
recognise the new multi-scan monitors as anything other than 640x480
monitors. (This is because the monitor sense pins are used in a new way on
Multi-scan monitors which the older circuitry on the PB160 interprets as a
640x480 display.)

You need a simple adapter that passes through all the signals except the
three sense pins. Then, inside the adapter you need to wire a connection
between SENSE0 and SENSE2. This identifies the monitor as a 16'

regards,

Paul Durrant


  Video Pin-outs for the 15-pin Macintosh video connector:
  Pin No. Signal Name  Description
  1       RED.GND      Red ground
  2       RED.VID      Red video signal
  3       /CSYNC       Composite synchronization signal
  4       SENSE0       Monitor sense signal 0
  5       GRN.VID      Green video signal (with sync on some models)
  6       GRN.GND      Green ground
  7       SENSE1       Monitor sense signal 1
  8       n.c.         Not connected
  9       BLU.VID      Blue video signal
  10      SENSE2       Monitor sense signal 2
  11      C&VSYNC.GND  Ground for CSYNC and VSYNC
  12      /VSYNC       Vertical synchronization signal
  13      BLU.GND      Blue ground
  14      HSYNC.GND    HSYNC ground
  15      /HSYNC       Horizontal synchronization signal
  Shell   CHASSIS.GND  Chassis ground