From: utzoo!decvax!cca!EJS@Mit-Mc@sri-unix Newsgroups: net.micro Title: 6850 SIO ACIA Article-I.D.: sri-unix.3283 Posted: Wed Sep 15 13:49:41 1982 Received: Thu Sep 16 01:52:05 1982 From: Eric J SwensonCan anyone give me a pointer to some documentation on 6850 SIO chips? I need to be able to configure the device for 8 bit/no parity/1 stop bit and can't find any documentation on how to do it. I've sent 03H to the device which I assume reinitializes it, and then a 91H (since that is what the operating system I use does). But I'm not sure what the 91H means. I fear that the high order bit tells the device to use interrupts which I don't really want so I probably want 11H. But, can anyone tell me how to decode the bits in this command? Specifically, I need to know what to output to the control port following a reset to get the 8 bit/no parity/1 stop bit configuration. Thanks.