So I have this ancient Compaq Prolinea 5133 that I fixed up and play MS-Dos games on. It works quite well with the ossc, but in 320×200 it’s zoomed in too much so that the left/right and top/bottom parts of the screen are chopped off. Firmware .81 it got better – but the top and bottom are still cut off. I can at least read the left/right parts of the screen (where the ms-dos command line starts).
At 640×480, 800×600 etc it looks perfect – perfect 4:3.
Is there any way to adjust this? Or is this mainly intended for progressive vga output like the dreamcast or xbox?