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From:	"frog" <apendzich AT plusnet DOT pl>
Newsgroups:	comp.os.msdos.djgpp
Subject:	DZCOM problem, please help
Date:	6 Dec 2005 04:17:22 -0800
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OS: DOS 6.22
DJGPP 2.04
ALLEGRO 4.03

Hi!
I do experience serious problem with interrupt driven serial
communication.
I am using Dzcom0.99i library, and from time to time I can send nothing
via my serial port.
After successfull initialization(dzcom_init and comm_port_init) I send
bytes to port via comm_port_out function. I see that they are witten
into queue, but they are not sent via serial port. I checked this using
terminall program on other computer. I think, I have problem with
interrupt. I must add that this happend from time to time ( not always
, more or less 3 times from 10) right after initalization. If datas are
transmitted successfully via com after initialization, I experience no
problems till program termination.
I am also using allegro timer interrupts in my program. Cound it be
that this is the reason?
Please, help me if you can
   Artur Pendzich

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