ocr: Pegister 27 The low byte of the character position reload register is located bere. (See Register 26). Register 28 This register contains cnly 1 bit, the MSB of the vertical line register. The vertical line register contains the current raster line being displayed. For NTSC systens this register will count from G to 261, for PAL, B to 311. Register 29 The low byte of the vertical line register is contained in Register 29. Register 38 Pegister 39 is the horizontal position register. Register 30 contains the upper 8 bits of this nine bit register. The LS increments at a rate too fast to be of an ...
