QNX 6.x and I can’t use Photon…
I need to put my monochrome display into 640X480 monochrome graphics mode. It’s a PC 104 system so I should be able to invoke BIOS services by executing SWI 0x10 with an appropriate value in AX and do it that way, correct? If anyone has some example code I’d really love to see it. I can’t even get the code snippets in the online help to compile, probably because I’m not using any photon libraries?
I just found _intr_v86() … could that be the right way to go about this?
I’ve done it with previously this hardware and Borland C in DOS, but that was a different memory model and I was dealing directly with the BIOS.
After I get it into graphics mode my strategy is to map video RAM into my address space and write a few primitives to twiddle the pixels. I’m not drawing anything complicated, just lines and circles. Or are those functions already available?