Page 2

Page 2 covers the memory locations 512-767 ($0200-02FF). This page area, like Page 3, stores information for use by the Operating System and BASIC; including pointers for BASIC and KERNAL routines. There is also buffer space in this page for the tape I/O, BASIC text input, the keyboard queue, and a small space for user-defined data.

Addresses

RAM

Hex Address	Dec Address	Type	Contents
$0200-$0258	512-600		BASIC Input cache
$0259-$0276	601-630
$0277-$0280	631-640		Keyboard cache. See also 198
$0281-$0285	641-645
$0286	646	Value	Text colour (values 0-15)
$0287	647		Colour under position of cursor
$0288	648		Top of screen page memory
$0289	649	Value	Length of keyboard cache
$028A	650		Key-repeat for CRSR ,INST/DEL  and SPACE : default (CRSR  only)= 0; no keys pressed = 6, all three keys pressed = 128
$028B	651		Speed of key-repeat
$028C	652		Delay time of first key-repeat
$028D	653		Keycodes of CTRL  (added together) with:
			Bit 0 - SHIFT
			Bit 1 - COMMODORE
			Bit 2 - CTRL
$028E	654		Last pattern of SHIFT /CTRL /COMMODORE  Keypress
$028F	655	Pointer	Low Byte keyboard decoding
$0290	656	Pointer	High byte keyboard decoding
$0291	657		Character set case change with SHIFT +COMMODORE : enabled = 0 ($00), disabled = 128 ($80)
$0292	658		Screen scrolling: enabled = 0, disabled <> 0
$0293-$02A1	659-673		RS-232 Pseudo 6551 Registers
$02A2	674		Indicator of CIA #1 Control Register B Activity During Cassette I/O
$02A3	675		Save Area for CIA #1 Interrupt Control Register During Cassette Read
$02A4	676		Save Area for CIA #1 Control Register A During Cassette Read
$02A5	677		Temporary Index to the Next 40-Column Line for Screen Scrolling
$02A6	678	Flag	For PAL/NTSC startup test
$02A7-$02FF	679-767		Unused