VGA Demo

Newzed

In looking at the VGA_Demo I noted that the letters for the demo words are called one letter at a time.· I am presently using TV_Terminal in the Propeller program for my mill but would like to switch to VGA because I have a nice 15" LCD monitor in the shop.· Is it possible to display strings with the VGA mode like I can do with TV_Terminal?

Sid

Mike Green

Yes, most of the methods (including "str") are included in both. Just change the name of the file in the OBJ statement from "tv_text" to "vga_text".

Newzed

Mike, VGA_Demo has one object - vga.· VGA.spin has no objects so there is no "tv_text" object.

In VGA_Demo I wrote:

print(string("Meow"))

and it compiled but I can't run it because I don't have my Demo board yet.· Is the above statement correct?

Sid

MacGeek117

It should be:

print.str(string("Meow"))

RoboGeek

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·

Mike Green

Sid,
There are several objects that use the VGA output. Most of them internally use the "vga" object contained in "vga.spin" to build the vga signal from a bitmap. To do something useful with this, there's the "vga_text" object in "vga_text.spin". This provides the interface you're using (like 'print.str(string("Meow"))') which includes decimal, hex, and binary output editing. These calls are intentionally the same as those used by "tv_text" which puts out a bitmap on the TV output.

There is a separate high resolution text output object called "vga_hires_text" that's mostly compatible and several graphics objects like "vga_512x384_bitmap" and a bitmap graphics object called "graphics" that can use either "tv" or "vga" for low resolution graphics.
Mike