NEC PowerMate VP75, Руководство пользователя

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Technical Information 1-11
Table Section 1-4 Interrupt Level Assignments
Interrupt Priority Interrupt Device
IRQ02 Cascade (INT output from slave)
IRQ03 COM2*
IRQ04 COM1*
IRQ05 Parallel Port 2
IRQ06 Diskette Drive Controller*
IRQ07 Parallel Port 1*
IRQ08 Real-time clock
IRQ09 Available
IRQ10 Available
IRQ11 Available
IRQ12 PS/2 mouse*
IRQ13 Coprocessor
IRQ14 Primary IDE
IRQ15 Secondary IDE
*Industry standard locations
Video Controller
The Circus Logic CLDG5434 PCI graphics controller combines powerful elements aimed at ad-
dressing the requirements of personal computer designs. State of the art techniques have been
added for optimizing performance in computer graphic intensive applications and graphical user
interfaces (GUI). A variety of industry standard 32-bit local bus interfaces are integrated on chip.
The key is that local bus interfaces are 32-bit wide.
Included in the video controller are cost saving features such as an integrated palette DAC and
clock synthesizer along with integrated support for multiple bus interfaces and flexible DRAM-
based display memory configurations.
The TrueColor RAMDAC provides 24-bit true color. The integrated dual clock synthesizer al-
lows full programmability of MCLK (memory clock) and PCLK (pixel clock). The integrated
clock synthesizer supports frequencies from 390 kHz to 120 MHz. The CLDG5434 supports up
to 2 MB of display memory. The video memory is 256K x 16 DRAM.