gomez@enuxha.eas.asu.edu (Jose L. Gomez-Rubio) (02/15/91)
I have a COM3-4 board that uses INT/IRQ 2 & 5. I have a Logitech bus mouse using INT 5. Can COM3 and bus mouse co-exist? It is mentioned that I may need to "or" HAS_FIFO macro. If not possible, I can use COM4 at INT 2. Anyone know the value I replace for fas_vec array value 0x9? I would prefer that I use all COM1-4 ports. All UARTs are NS16550AFN. Thanks for the help! -- gomez@enuxha.eas.asu.edu
gemini@geminix.in-berlin.de (Uwe Doering) (02/15/91)
gomez@enuxha.eas.asu.edu (Jose L. Gomez-Rubio) writes: >I have a COM3-4 board that uses INT/IRQ 2 & 5. I have a Logitech bus mouse >using INT 5. Can COM3 and bus mouse co-exist? It is mentioned that >I may need to "or" HAS_FIFO macro. If not possible, I can use COM4 at INT 2. >Anyone know the value I replace for fas_vec array value 0x9? I would >prefer that I use all COM1-4 ports. All UARTs are NS16550AFN. For this kind of serial card you need a separate IRQ line for every port. And no, it can't share an IRQ with a bus mouse. That's all due to hardware limitations in the AT bus design, and not a problem with FAS. Therefor, you can only use as much ports as you have IRQs available. BTW, the macro you mention is `NO_FIFO', not `HAS_FIFO'. But it doesn't have any effect with bus mice, anyway (it's only for serial mice connected to an FAS port). Uwe -- Uwe Doering | INET : gemini@geminix.in-berlin.de Berlin |---------------------------------------------------------------- Germany | UUCP : ...!unido!fub!geminix.in-berlin.de!gemini
jca@pnet01.cts.com (John C. Archambeau) (02/19/91)
gomez@enuxha.eas.asu.edu (Jose L. Gomez-Rubio) writes: >I have a COM3-4 board that uses INT/IRQ 2 & 5. I have a Logitech bus mouse >using INT 5. Can COM3 and bus mouse co-exist? It is mentioned that >I may need to "or" HAS_FIFO macro. If not possible, I can use COM4 at INT 2. >Anyone know the value I replace for fas_vec array value 0x9? I would >prefer that I use all COM1-4 ports. All UARTs are NS16550AFN. Yes, COM3 and the bus mouse can co-exist. Just put COM3 at IRQ 2 or 5 and put the bus mouse at the remaining IRQ. Getting COM4 up will be a major feat though since all of your IRQs (2 through 7) will be used. But COM3 and the bus mouse is no problem. Just make the appropriate change(s) in your space.c file. // JCA /* **--------------------------------------------------------------------------* ** Flames : /dev/null | What to buy? ** ARPANET : crash!pnet01!jca@nosc.mil | EISA or MCA? ** INTERNET: jca@pnet01.cts.com | When will the bus wars end? ** UUCP : {nosc ucsd hplabs!hp-sdd}!crash!pnet01!jca **--------------------------------------------------------------------------* */