Atari 400 Technical Reference Manual page 14

Q.
CENTRAL
lID
ROUTINE (CIO)
User Call Parameters
lID
Control Block
Device Status
Device Table
CIOIHandier Interface Parameters
Zero-Page IOCB
Internal Working Variables
H. SERIAL
110
ROUTINE (SIO)
User Call Parameters
Device Control Block
Bus Sound Control
Serial Bus Control
Retry Logic
Checksum
Data Buffering
General Buffer Control
Command Frame Output Buffer
ReceivelTransmit Data Buffering
SID Timeout
Internal Working Variables
~. ATARI CONTROLLERS
Joysticks
Paddles
Light Pen
Driving Controllers
K. DISK FILE MANAGER
L. DISK UTILITY POINTER
M. FLOATING POINT PACKAGE
N. Power-Up and System Reset
RAM Sizing
Diskette/Cassette-Boot
Environment Control
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