Commodore PLUS 4 Service Manual page 24

••
Issue 7, 1984
••
Model: C16, PLUS 44
LINE DEFINITIONS
AO to A15
AEC
ATN
BA
BRESET
Cl HIGH, Cl LOW
C2 HIGH, C2 LOW
CAS
CLK IN
COLOR
COMP
CE
CS
CSO
CSl
CST MTR
CST RD
CST SENSE
CST WRT
CTS
DBO to DB7
DCD
DRAM
DRAM ADD
DSR
DTR
EXT AUDIO
GATE IN
IRQ
KO to K7
KERN
LUM
MUX
PO to P7
RAS
RESET
RxC
RxD
R/W
RTS
SND
TED
TxD
'f
00
f2
computer 44
Address Bit 0to
Address Enable Control
Attention
Bus Available
Buffered System Reset
External Cartridge Chip Select
II
Dynamic RAM Column Address Strobe
Master Clock (Single Phase, 14.31818 MHz)
Chroma Output
Composite Chroma and Luma
Chip Enable
Chip Select
Low ROM Chip Select
High ROM Chip Select
Cassette Motor Control
Cassette Read
Cassette Sensor
Cassette Write
Clear To Send
Data Bit 0to
Data Carrier Detect
Dynamic RAM
Dynamic RAM Address
Data Set Ready
Data Terminal Ready
External Audio Input
R/W GATE
Interupt Request
Keyboard Latch 0to
Kernal ROM Control Line
Composite Sync and Luminence
Address Multiplex Control
Port Bit 0to
Dynamic RAM Row Address Strobe
System Reset
Receive Clock
Receive Data
Read/Write Line
Request To Send
Sound Line
Text Display
Transmit Data
System Clock (Varies between 1and
Artificial,2,
.,. commodore
1980 COMMODORE BUSINESS MACHINES INC.
©©
15
77
77
77
Address Valid Rising Edge,
Data Valid Falling Edge
2MHz)