PORTIBM PC Portable (uses same BIOS as XT) EDC0-EDC1 - DR DOS BATTERYMAX - DYNAMIC IDLE DETECTION Note: These ports are emulated by the IDLE386 dynamic idle detection of the DR DOS BatteryMAX component. The actual definition of the bits is up to the OEMs EDC0 R- emulated I/O address for video/serial activity status check bit 6: screen RAM(Random Access Memory) See also DRAM, SRAM. updated since last query bit 1: COM2??? activity detected since last query bit 0: COM1??? activity detected since last query Note: Reading resets the IDLE386 video/serial internal setting EDC1 -W emulated I/O address for idle port sets wakeup alarm on specified hardware event bit 1: keyboard INT 09h bit 0: timer INT 08h