Service manual

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8258I N/B Maintenance
8258I N/B Maintenance
 Host interface
• Software optional with LPC interface
• Primary programmable I/O address communication port in LPC mode
• Support SERIRQ in LPC interface
• Support hardware fast Gate A20 and KBRST
• Support port 92 h
• 8-bit Turbo 8052 Microprocessor code based, speed up to 24 MHz
• 256 bytes internal RAM
• 64 K bytes embedded programmable flash memory
• 2 K bytes external SRAM
• Support 2 SMBus interface support master mode
 SMBus
 Timers
 128-pin QFP/LQFP
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