text mode 200×75

On TFT screen it’s better to use native resolution even in text mode. The text mode resolution must be set on the kernel command line with the vga option (i.e. in grub or lilo):

kernel /boot/vmlinuz-2.6.16-2-686 root=/dev/hda1 ro vga=838

To know the mode id use the hwinfo command:

sudo hwinfo --framebuffer

Mode 0x0318: 1024x768 (+4096), 24 bits

You need to convert the mode ID (0x0318 to decimal)