On December 16, 2010 05:39:21 pm you wrote: > On Thu, 2010-12-16 at 14:25 -0800, Dan Kegel wrote: > > On Thu, Dec 16, 2010 at 12:41 PM, Tim E. Real <[email protected]> wrote: > > >> The amiga is actually fairly late model here folks, I started with a > > >> quest super elf I built from a kit. Circa '77. > > > > > > 1802 CPU fan here too. Mine was RCA COSMAC VIP 1802. > > > Added 3 channel sound (Famous G.I. AY3- chip) and > > > colour graphics with T.I. 9918 chip, after read Circuit Cellar article > > > on it. Oh what fun... > > > > My first system was, IIRC, an Intersil 6100 (single-chip pdp-8 clone) > > that my Dad designed and I wire-wrapped. It had a four digit LED > > display and a keypad. I wrote my first real-world-affecting > > program on it by using a 74c06 as a speaker driver, controlling it > > with a single bit, and then flipping that bit with a hand-coded loop > > to make all kinds of sirens. Good times! > > - Dan > > Aaaaaaaaaaargh, I had an amp from an established company, can't remember > this company, everything was connected by wire-wrapping, so indeed a > good discrete circuit, but the wire-wrapping did cause defects. Btw. I > prefer good old leaded solder, but leaded solder in Germany isn't > allowed anymore. We should start to wire-wrap all electronic devices for > our politicians here :p. > > Cheers! > > Ralf
Yeah, the trouble with lead-free solder is that EVERY joint looks cloudy cold and bad, even if it's good. Very hard to tell if it's a good joint. A bit frustrating from technician viewpoint. Different type of product as well. Choose carefully. When repairing, Mfr A says use this type, Mfr B says use that type. Leaded solder still available here, but can't be used in new products. If all else fails, use chewing gum and wrappers, like McGyver! Tim. _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
