John B. Matthews wrote:
In article <GrOdnXcPh5yhzV3VnZ2dnUVZ_sninZ2d@comcast.com>, "Bill Garber" <willy46pa@comcast.net> wrote:"John B. Matthews" <nospam@nospam.invalid> wrote in message nospam-2B1796.16482304092008@news.motzarella.org">news:nospam-2B1796.16482304092008@news.motzarella.org...I'm not finished yet. I'm making a mirror of the FAQs to put on my site.In article <qNmdnRynH7UpiF3VnZ2dnUVZ_rfinZ2d@comcast.com>, "Bill Garber" <willy46pa@comcast.net> wrote:"John B. Matthews" <nospam@nospam.invalid> wrote in message nospam-1428E0.12460204092008@news.motzarella.org">news:nospam-1428E0.12460204092008@news.motzarella.org...Thank you for providing the link I slipped in just before posting! :-)And, it contains the link above that I have posted.In article <H-6dnf-dHrQinl3VnZ2dnUVZ_h-dnZ2d@comcast.com>, "Bill Garber" <willy46pa@comcast.net> wrote:"DeaconBlue" <locksmith64@doramail.com> wrote in message qr2dncQPsYS-ZyLVnZ2dnUVZ8judnZ2d@giganews.com">news:qr2dncQPsYS-ZyLVnZ2dnUVZ8judnZ2d@giganews.com...For anyone else interested in how to use an SSC, here is a link to the FAQs on the subject. ;-) http://home.swbell.net/rubywand/Csa2T1TCOM.html#013Hello again!I tried with the SSC-block pointing down and straight-through without the null-modem adapter. This produced the same "[00]" in the terminal-program, but no response when trying ADT. With the null-modem adapter no characters are transferred to terminal as expected.I have also tried random selection of different JP7/JP8 settings, but with no result.Here's some additional programming information, too: <http://home.woh.rr.com/jbmatthews/ssc.html>I've tracked down bad cables and connectors using a VOM. Is there a way for the OP to see if the card itself is functional, say by storing $10 in $C08A+slot and checking RTS (pin 4)?What does the FAQ tell us?Alas, it mentions using an Ohm meter to detect open- and short-circuits in many contexts, but there's nothing on measuring TTL levels under program control to diagnose an SSC. I'm sure a VOM responds too slowly to see changes on TXD, but maybe you could measure a constant level. Clearing bits 2-3 of $C08A+slot should make RTS high. I'm guessing.
And sending NULs or DELs should change the average TXD level enough to be readily apparent. -michael AppleCrate II: An Apple II "blade server"! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."