[comp.sys.dec.micro] CP/M info

fzsitvay@techbook.com (Frank Zsitvay) (06/17/91)

  does anyone have any information about programming the serial ports
on the rainbow 100 from CP/M??   more specifically, i'd like to write
some assembly language stuff to control the ports.
 
   also, how do you write directly to video ram from the z80??


-- 
fzsitvay@techbook.COM - but don't quote me on that....

  No wonder I can't hold a regular sleeping schedule.  My subconcious mind
knows we are only one well-placed bullet from having Quayle as president.

slsw2@cc.usu.edu (06/17/91)

In article <1991Jun16.191055.20693@techbook.com>, fzsitvay@techbook.com (Frank Zsitvay) writes:
>    also, how do you write directly to video ram from the z80??

I believe that you can't. I think the video RAM is connected to the 8086 and
therefore invisible to the Z80.

Roger Ivie
slsw2@cc.usu.edu