IBM 5150 - Page 305

p
parameter passing (ROM BIOS) 5-4
software interrupt listing 5-6
pause (keyboard extended code)
5-21
Q
QSO (coprocessor) 2-4
QS 1 (coprocessor) 2-4
R
read command I/O channel 1-22
read memory command (-MEMR) 1-22
ready (RDY), I/O channel 1-21
real numbers (coprocessor) 2-3,2-4
request interrupt 2 to 7 (IRQ2-IRQ7) 1-22
reserved interrupts,
BASIC and DOS 5-8, 5-9
RESET DRV,
I/O channel 1-23
s
screen editor keyboard function 5-24
scroll lock (keyboard extended code) 5-20
shift (key priorities (keyboard code) 5-20
shift (keyboard extended code) 5-17,5-19
shift states (keyboard code) 5-19
signals (1/ 0) ,
-DACKO-DACK3 1-21
Index-6