Graphics Subsystem; Motion Video Controller; Interrupt Level Assignments - NEC POWERMATE P - SERVICE MANUAL 1996 Service And Reference Manual

Interrupt Priority
IRQ00
IRQ01
IRQ02
IRQ03
IRQ04
IRQ05
IRQ06
IRQ07
IRQ08
IRQ09
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15

Graphics Subsystem

The system unit has a Matrox MGA Millennium motion video controller and graphics
accelerator integrated on the video board. The video board plugs into the PCI backplane.
State of the art techniques are used for optimizing performance in computer graphic
intensive applications and graphical user interfaces (GUI).
The integrated graphics controller integrates a motion video controller, a high-performance
GUI accelerator, 24-bit high frequency DAC and clock generator, VESA
feature connector, and 2 MB of fast 64-bit WRAM (expandable using optional upgrade
modules).

Motion Video Controller

The motion video controller integrates a powerful Windows
motion video playback hardware for superior performance. The graphics engine includes an
on-chip color space converter to accelerate decompression and a hardware scaler to scale
continuously from native size up to full screen at full speed. The graphics engine delivers a
full screen, smooth display of motion video data up to 30 frames per second (fps). Support
includes MPEG-1 and Video for Windows
Table 1-5 Interrupt Level Assignments
®
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Technical Information
Interrupt Device
Counter/Timer
Keyboard
Cascade (INT output from slave)
COM2 and COM4
COM1 and COM3
Parallel Port 2/Audio (if present)
Diskette Drive Controller
Parallel Port 1
Real-time clock
Audio (if present)
Available
Matrox Video Controller
PS/2 mouse
Coprocessor
Primary IDE
Secondary IDE
®
®
GUI engine and unique
1-11
-compliant