27 Feb
2013
27 Feb
'13
11:11 p.m.
This will be little help, and I can't recall the exact details, but a magazine I used
to have described a circuit that IIRC put MDA on a composite monitor. It was Micro
something, and common enough but just wasn't BYTE or PC Mag. And you built the thing
by wire wrapping w/machine pin sockets and pins that at the time IIRC you could only get
from Mouser. They were named as the source anyway.
Have you tried beeping? I think rom BASIC supports beeping or some kind of rudimentary
sound generation. With no floppy disk or h/d it automatically loads BASIC. Hallelujah. It
can be a useful diagnostic tool.in some instances.