Post by roytam1 on Jan 26, 2014 5:36:48 GMT -8
It is because 8086 tiny does not support resolutions other than 720x348, while ETen Chinese Shell uses 640x408.
#ifndef NO_GRAPHICS
void video_mem_update()
{
for (scratch_int = GRAPHICS_X * GRAPHICS_Y; scratch_int--;)
((unsigned*)sdl_screen->pixels)[scratch_int] = -!!(1 << (7 - scratch_int % 8) & mem[scratch_int / (GRAPHICS_X*4) * (GRAPHICS_X/8) + scratch_int % GRAPHICS_X / 8 + ((88 + io_ports[0x3B8] / 128 * 4 + scratch_int / GRAPHICS_X % 4) << 13)]);
SDL_Flip(sdl_screen);
}
#endif
But it needs dynamic changing resolution instead of compile time hard-coding.
So we really need supporting I/O port read/write for changing hercules CRTC registers for dynamic resolutions.
