Xref: utzoo comp.sys.mac.programmer:10668 comp.sys.mac.hardware:570 Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!aplcen!haven!umd5!zben From: zben@umd5.umd.edu (Ben Cranston) Newsgroups: comp.sys.mac.programmer,comp.sys.mac.hardware Subject: The "video hack" versus II CX Message-ID: <5691@umd5.umd.edu> Date: 28 Nov 89 18:02:55 GMT Organization: University of Maryland, College Park Lines: 23 Tried to install the "video hack" on my II CX last night, and I *think* I followed the instructions, but the icon comes up crossed-out and the buttons that are supposed to be visible in the CDEF window aren't there, with the exception of the "filter" button which is grayed out. Did this with the standard monitor plugged in, hoping to see the screen start rolling when the synch rate changed. Do I need to unplug the Apple monitor? Found a circuit for a color combiner but it needs a "chroma key" input. Is this just a back-porch-time flag? Is it available or derivable from the video card's DB9 anywhere, or do I need to build a circuit to follow the composite synch and regenerate it? Dox for vhack say composite video comes out the "green" pin. Is it reasonable to expect to be able to build a color combiner to get RS170 color signal? Are boxes to do this available commercially? -- Sig DS.L ('ZBen') ; Ben Cranston * Network Infrastructures Group, Computer Science Center * University of Maryland at College Park * of Ulm