Labels:book | crt screen | earth | reckoner OCR: National February 1989 8 Semiconductor 3473 DP8473 Floppy Disk Controller PLUS 2TM F General Description Features This controller isa full featured floppy disk controller that is Fully PD765A and IBM BIOS compatible many software additional compatible hardware with the and PD765A software but also enhancements inciudes On Integrates chip all 24 PCXT MHz Crystal PCAT Oscillator and mos PS/28 Logic US These enhancements include adcitional logic specifically re- DMA enable logic quired for an IBM@ PC PC-XT PC-ATO or PS/ /20 design IBM compatible address decode of A0-A2 This controller a incorporates precision analog data separa 12 mA mA uP floppy bus drive interface intertace buffers buffers tor, that includes self trimming delay line and VCO Up to 40 three external filters are switched autom ...
