[Simh] Serial Console

[Shoppa, Tim]

> Baud rate changes were used a lot. Atleast on DEC systems.



For the multiplexer style serial interfaces, yes. But just thinking about VAX-11 and PDP-11... for system consoles (the equivalent of what you get in the VAX or PDP-11 simh emulator) the baud rate was either set with wire-wrap (DL11 or DLV11J type boards), with dipswitches (third part DL11 emulating boards), a little knob at the console port, or in at least one non-DEC 11 compatible, in nonvolatile configuration RAM. Pretty much "fixed baud" for the console.

I have no doubt someone will put DLV11J style wire wrap terminals on a little panel and wire it up to a patched version of SIMH to allow console baud rates to change on the fly :-)



Tim.





[http://www.macro-inc.com/DLV11J_Jumpers.gif]
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