CP/M info

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2 total messages Started by Frank Zsitvay Sun, 16 Jun 1991 19:10

#1102

Author: Frank Zsitvay
Date: Sun, 16 Jun 1991 19:10

13 lines
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  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.

Re: CP/M info

#1103

Author: slsw2
Date: Mon, 17 Jun 1991 15:51

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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

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