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From: | "Patrick Talloen" <p DOT talloen AT hotmail DOT com> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | pmcom and overrun |
Date: | Wed, 5 May 2004 21:54:10 +0200 |
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To: | djgpp AT delorie DOT com |
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Hi, I'm using pmcom for serial communication between windows-pc and dos-pc (Rocky 512) (speed 115200) My serial ports are UART 16C550 compatible with a fifo of 16 bytes During data transfer (XON-XOFF handshaking) a buffer overrun happens frequently, even with a small amount of data (<16 byte) After a overrun no transfer is possible anymore. How can this overrun condition be resetted? Why does this happen ? In my previous application in16bit (Greenleaf com lib) i could master 4 comports at a speed of 115200 Are ISR in PM that slow ? Where can i find a good serial library for djgpp (RM ISR) (a commercial one ?) Thanks Patrick
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