debari@topaz.rutgers.edu.UUCP (09/14/87)
We all agree that the TRS-80 Model III can't be a VT100 because it has a 64x16 screen. However, I just had the high-res graphics board installed in my Mod. 3 and the 640x240 pixel resolution of the graphics screen seems plenty big enough to allow an 80x24 text screen. Text can be displayed in the graphics screen with the PRINT#-3 statement and the characters look small enough to fit 80 columns and 24 lines. Has anyone out there tried to use this higher resolution to make a VT100 emulator for a Model 3 with the hi-res board? Can it be done? Thanks, -- Tony DeBari ARPA: debari@topaz.rutgers.edu UUCP: ...!rutgers!topaz.rutgers.edu!debari "Interfere?? Of course we should interfere! Always do what you're best at, that's what I say." -The Doctor --
leonard@bucket.UUCP (Leonard Erickson) (09/15/87)
In article <14692@topaz.rutgers.edu> debari@topaz.rutgers.edu (Antonio DeBari) writes:
< Text can be displayed in the
<graphics screen with the PRINT#-3 statement and the characters
<look small enough to fit 80 columns and 24 lines.
Sorry, but those characters are _plotted_ dot-by-dot on the screen by
BASICG from an internal table (_not_ the character generator!).
I tried using them with a simple terminal program and found that there
was too much interference between the port acceses for plotting the
characters and the port accesses for the RS-232. (It takes several
OUT instructions for every dot in the character matrix!!!!!)
If you really want 80x24, get the Model 4 upgrade. It's only $99 now
(plus around $30-45 installation) and they will modify the hi-res
board to work with the Model 4 board. And you can still run your M3
stuff if you want/need to (and with a simple routine, you can run
them twice as fast!!)
--
Leonard Erickson ...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I used to be a hacker. Now I'm a 'microcomputer specialist'.
You know... I'd rather be a hacker."