[Coco] serial terminal?

[Kevin Diggs]

Hi,

	A while back there was someone who sounded like they knew their stuff, 
serially speaking. I don't. I am trying to get linux to work as a 
terminal on my tre.

	The setup is as follows. Linux 2.4.26 on a 486dx2-40. Terminal program 
is minicom. Serial parameters are 19200 8N1, hardware handshake. Serial 
chip is 16550A.

	On the tre the setup is FHL eliminator (2 serial ports using 65c52 
serial chip). Driver is DACIA. Using their modded xmode:

OS9:xmode_elim /t3 

 

  nam=T3 mgr=SCF ddr=DACIA hpn=07 hpa=FF60 upc=00 bso=01 

  dlo=00 eko=01 alf=01 nul=00 pau=00 pag=18 bsp=08 del=18 

  eor=0D eof=1B rpr=09 dup=19 psc=17 int=03 qut=05 bse=08 

  ovf=07 par=0E bau=07 xon=00 xof=00 col=50 row=18 xtp=41 

  wnd=41 val= sty= cpx= cpy= fgc= bgc= bdc= 

 

	The par byte (offset $26 in descriptor (same as type?) is:

	%0xxxxxxx	1 stop bit
	%1xxxxxxx	2 stop bits
	%x00xxxxx	8 bits
	%x01xxxxx	7 bits
	%x10xxxxx	6 bits
	%x11xxxxx	5 bits
	%xxxyxxxx	y sets modem kill (0->no action, 1 returns
			e$hangup)
	%xxxxyxxx	receive software flow control (1 -> enabled)
	%xxxxxyxx	transmit software flow control (1 -> enabled)
	%xxxxxxyx	CTS/RTS hardware flow control (1->enabled)
	%xxxxxxxy	DSR/DTR hardware flow control (1->enabled)

	The xtyp byte (offset $2e) is:

	%xyxxxxxx	0 sets DTR when opened and disables when closed
			1 enables DTR on device (/t3) initialization
	%xxxxyyyy	controls receive buffer size in pages (0 use
			default)

	The problem is flow control. It is not particularly easy to get a sub 2 
MHz 8-bit machine to overrun a 40 MHz 32 machine with a buffered serial 
chip. But I am seeing occasional listing glitches. I also tried a par of 
2 and it is much worse.

	Also, noone responded to my basic09 on a terminal question. I fixed the 
problem by switching the terminal emulation to ANSI.

					kevin