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7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
Integrated Interrupt Controller
Two 8237A Compatible DMA Controller
Two 8259A Compatible Interrupt Controllers
Level or Edge Triggered programmable
Serial IRQ
Interrupt Source Re-routable to Any IRQ channel
Three 8254 Compatible Programmable 16-bits counters
System timer interrupt
Generate refresh request
Speaker output
Integrated Keyboard Controller
Hardwired Logic Provides Instant Response
Supports PS/2 Mouse Interface
Password Security and Password Power-Up
System Sleep and Power-Up by Hot-Key
KBC and PS2 Mouse Can Be Individually Disabled
Integrated Real Time Clock (RTC) with 256B CMOS SRAM
Supports ACPI Day-Month and Month-of-Year- Alarm
256 Bytes of CMOS SRAM
Provides RTC H/W Year 2000 Solution
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