First line: 8272A floppy disk controller block diagram DCM7 DIODE Processor Host Support Optimized mobile mobile processors GTL+ Driver Technology Integrated DRAM Support using 16-Mb, 64-Mb, 128-Mb Technology Standard Registered SDRAM (Synchronous) DRAM Support (x-1-1-1 access MHz) Enhanced Open Page ArbitratioAbstract: .. diode coupling provides power to reduce RTC battery drainage. This plane is assumed to operate .. o o O O O o O O o O o o O O AC DCM7 DCM3 GCLKO MC22 MC23 MD17 CKE3# Mft2# Mft4# Mft1# CS3# MD46 MW3 MD41 MD36 .. Tags: DCM7 DIODE8272A floppy disk controller block diagrammotorola mc55mc55 datasheetinterfacing of 8237 with 8086datasheet abstract..