>How one place characters on terminal, give examples of terminal
>coding as sent from computer to terminal?
>
>-outputting characters to screen?
Say you want to print the character 'W'. You put the letter 'W'
into the accumulator, and tell it to output to the serial port.
>-resetting cursor to different places?
For a truly portable interface, you use a mix of carriage returns,
line feeds, and spaces/tabs to put the cursor where you want. If
you know you'll have a VT52 or VT100 or ADM3A or (insert generic
type of terminal here) you can send a specific character sequence.
If you're going to be eventually turning this machine into a CP/M
platform, I heavily recommend that you read the copy of your "CP/M
Customization Guide" that shipped with your CP/M distribution.
You'll find the terminal output/input routines explicitly coded as
an example in that book.
>Which CPU is very friendly for creating basic codings to put into
>ROM and assembling? Z80? or suitable CPU?
Just about anything. The Z80 certainly is a popular and easy-to-interface
to choice.
--
Tim Shoppa Email: shoppa_at_trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Received on Fri Apr 09 1999 - 07:54:35 BST