On Wednesday, October 15, 2003, at 08:20 AM, Stuart Bell wrote:
Power-R made adapters than plugged into the lines between the l/b and a/b. ISTR seeing one on eBay a while back. (They also did one for the 575 l/b, which I have but have never tried using).
The problem with the b/w ones is that they worked with very old b/w composite or TTL monitors, and that few modern ones would be happy at 512 x 342.
There is a design for a TTL video adapter on pp168ff of Macintosh Repair and Upgrade Secrets by Larry Pina, published by Hayden. However, the issue again is what you do these days with TTL video signals!
In the UK there are plenty of old Microvitec TTL monitors (big square tin boxes) floating around that were once converted by education authorities running BBC Micro computers (Stuart??). Failing that I believe Microvitec still sell them (at stupid prices mind you) My dad has one in his workshop, I was thinking of dusting it off and seeing if I could get life out of my old Mac 512 board I have hanging on the wall. All I need is the power input to the board and the video output to the monitor, right?
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