Technical Information 1-21
■
CardBus slots with hot insertion and removal
■
independent Read and Write buffers for each direction
■
burst transfers to maximize data throughput on the PCI CardBus bus.
Sound Integrated Circuit
The Creative Vibra™ 16S VLSI chip is a single combo chip. This dynamic audio circuitry
provides the following:
■
ISA 16-bit bus interface chip
■
audio digital processor
■
high performance 16-bit Sigma Delta Stereo Codec
■
Sound Blaster™ 16 register compatible mixer with AGC
■
built-in analog joystick quad timer.
Interrupt Controllers
Using interrupts, it is possible to change the system’s code sequence. To change the se-
quence, reassign the interrupt-levels. Fifteen interrupts can be used with a cascade connec-
tion of 8259INTC x 2.
Interrupt-level assignments 0 through 15 are listed in Table 1-4, in order of decreasing pri-
ority.
Table 1-4 Interrupt Controllers
Controller
Master/Slave
Priority
Name
Device
Master
1
IRQ00
Counter 0/Timer 1
Master
2
IRQ01
Keyboard
Master
3–10
IRQ02
INT output from controller 2
Slave
4
IRQ09
Infrared Port
Slave
5
IRQ10
Reserved
Slave
6
IRQ11
Reserved (PCMCIA)
Slave
7
IRQ12
PS/2 Mouse
Slave
8
IRQ13
Math Coprocessor (built into CPU)
Slave
9
IRQ14
Hard Disk Controller 1
