IBM PC, 6 , 7 , 241 
Include Files, 10 , 22 , 373 
INTEN, 218 
INTENA, 217 
INTENAR, 217 
Interlaced mode, --> 
Interleaved Memory, 4 
Internal Slots, 7 
Interrupt, --> 
Interrupt Control Register, --> 
Interrupts - during vertical blanking, 219 
INTF_BLIT, 187 
INTREQ, 35 , 218 
INTREQR, 218 

Joy stick port, 323 
JOY0DAT/JOY1DAT, --> 
Joystick, --> 
JOYxDAT, 229 

Keyboard, --> 
Keyboard Port, 319