Quadra 605 Resolutions/Freqs & Pi LCDs

[Trash80toHP_Mini]

Been looking at inexpensive LCD/Controller bundles ever since I got the Orange Pi I've yet to play with, but that's another story.

Bigmessowires aptly named what he, floofies and I have been up to on as the "design a custom case" bonanza!

I've been looking at a couple of case downsizing projects and the thought of a Miniaturized IIfx tower config brought on thoughts of a DT config which would of course need a display.

ktkm's C3D-printed casing for LCD Panel? Snow White LCD modeling project immediately came to mind. I found several LCD kits and it looks like 8" @ 800x600 might be the sweet spot and the combo I'm focusing on seems perfect for hacking as all connectors are on IDC ribbon cables plugged into the board for easily distribution about the case or for a bundling into an ADC type connection.

lowendmac's Q605 specs had caught my eye long ago:

video: 512 KB VRAM, expandable to 1 MB (remove both 256K VRAM SIMMs, plug in 512K replacements; supports 512 x 384, 640 x 480, 640 x 870, 832 x 624, 1024 x 768, and 1152 x 870 resolutions. We have a field report of an 800 x 600 option as well

So back together and onto the test bench went the MicroQuadra:

Mag Innovision 21" CRT w/Resolution/Frequency readout LCD/Mac DA-15, HD-15 and 5BNC inputs

ENHANCE "Liberty Wheel" DA-15 to DA-15 VGA Adapter between Q605 and DA-15 input.

I can now confirm lowendmac's field report of 800x600 output! [] ]'>

800x600@56Hz SVGA - Image is fabulous! Gotta check to see if that rPi 800x600 SVGA LCD kit can tolerate the sub-standard frequency. :-/ I'll try the Q605's output on the 60Hz ONLY HP LCDs I keep around for testing purposes first.

640x480@60Hz VGA - gave me an offset image and "Non-Registered Mode - See Setup" error code.

- Monitors Control Panel lists it as 640x480x60Hz though it was plenty good enough for me to set up SVGA in the Monitors Control Panel.

Finally, the questions:

What are the odds on one of these "Backup Viewscreen Automotive LCDs" syncing @ 56Hz?

Gorgonops, what's the deal on the scan rate converters(?) ISTR you mentioning from time to time?

Has anyone used a similar LCD kit on 68K?

ISTR something similar having been used in Compact Mac cases, usually with MicroATX boards?





It's nice to see a controller board without all those big honking connectors soldered to it. I'd like to try one out. If it won't work with the Q605 board, it should be fine with the 630/6400 hack, but it wouldn't be the same. :-/

 

[bigmessowires]

I think I used that exact LCD and controller board for a customer project a few years ago. Or at least, it looks very familiar.

I've no idea if it would do 800x600@56Hz, but why not try it and see? As you said, in the worst case you could still use it with a different computer at 800x600x60Hz.

 

[Trash80toHP_Mini]

That's a pretty big bite out of my toy budget, can't believe I forgot to post the link:

http://www.ebay.com/itm/VGA-2AV-Remote-driver-board-8inch-AT080TN52-EJ080NA-05A-800-600-lcd-display/170874443008

Docs look pretty good, gotta go over them well. Maybe contact the seller before ordering. But, first I need to decide if I want to actually to complete the hack for a change. [] ]'>

 

[james_w]

I use this 12" 800 x 600 LCD monitor (LP-12R01 or LP-12R02), and it works with all my Macs' built in video, often it doesn't work well with video cards (all nubus era): http://content.etilize.com/Manufacturer-Brochure/1019815386.pdf

I have the black version hooked up to my Quadra 700 most of the time. It runs in 640 x 480 too, but obviously does ugly scaling up. At 800 x 600 it is super sharp. Its main advantage is that it's lovely and small. Its styling isn't really in keeping though, so I'd love to be able to buy or make a platinum case that matches better!