On Tue, Mar 12, 2002 at 05:01:23AM -0300, Adriano Camargo Rodrigues da Cunha wrote: > > Hi, > > Anyone here knows the Z8530 Serial Controller Chip? I'm > working on a driver for it for UZIX, but I'm having a problem: clearing > the DTR bit (register 5) doesn't make the host stop sending bits to > MSX, so I get a buffer overrun and nice CRASH. Any help? > > Thanks,
Hi, I don't know this chip, but I know serial lines in general. Hardware handshake is usually not switched on by default. If you have XON/XOFF handshake, you should send a ^S to stop the data and a ^Q to restart it. This is the more usual approach. The reason is that some serial cables don't actually have conducting lines on the handshake pins. By the way: To be sure, you can just measure the voltage on the pins. The pinout is on several places, among which is the text-terminal-HOWTO for linux. I hope UZIX doesn't crash from the buffer overrun? It should just drop the data I'd say. If you have TCP connections, that should not be a problem at all. Bye, shevek -- For info, see http://www.stack.nl/~wynke/MSX/listinfo.html
