Commodore 128 Programmer's Reference Manual page 556

546 COMMODORE 128
Commodore 64 Memory Map (continued)
HEX
LABEL ADDRESS
ILOAD 0330-0331
ISAVE 0332-0333
0334-033B
TBUFFR 033C-03FB
03FC-03FF
VICSCN 0400-07FF
0400-07E7
07F8-07FF
0800-9FFF
8000-9FFF
A000-BFFF
C000-CFFF
D000-DFFF
E000-FFFF
COMMODORE 64 IN P U T /O U T P U T ASSIGNMENTS
HEX DECIMAL
0000 0
0001
DECIMAL
LOCATION
816-817
818-819
820-827
828-1019
1020-1023
1024-2047
1024-2023
2040-2047
2048-40959
32768-40959
40960-49151
49152-53247
53248-57343
57344-65535
BITS
7-0
1
0
1
2
3
4
5
6 -7
DESCRIPTION
KERNAL LOAD Routine Vector
KERNAL SAVE Routine Vector
Unused
Tape I/O Buffer
Unused
1024 Byte Screen Memory Area
Video Matrix: 25 Lines
Columns
Sprite Data Pointers
Normal BASIC Program Space
VSP Cartridge ROM— 8192 Bytes
BASIC ROM— 8192 Bytes (or 8K
RAM)
RAM— 4096 Bytes
Input/Output Devices and Color
RAM
or Character Generator ROM
or RAM— 4096 Bytes
KERNAL ROM— 8192 Bytes (or 8K
RAM)
DESCRIPTION
MOS 6510 Data Direction Register
( x x lO llll)
Bit = 1 : Output, Bit =
Input, x = Either
MOS 6510 M icro-Processor On-Chip
I/O Port
/LORAM Signal (0 = Switch BASIC
ROM Out)
/HIRAM Signal (0 = Switch Kernal
ROM Out)
/CHAREN Signal (0 = Switch Char.
ROM In)
Cassette Data Output Line
Cassette Switch Sense
= Switch Closed
1
Cassette Motor Control
0 = ON, 1 = OFF
Undefined
x
40
0: