PC Bits                                

  PC Bits Features  Those IRQs and DMAs 

 3: COM2: 4: COM1: 5: LPT2: (or Hard Dis

k controller) 6: Floppy Disk controller 

7: LPT1: As you can see, there isn't a l

ot of room for adding other bits and bob

s if  your XT is already fully configure

d. However, it IS possible to share an I

RQ assignment. Thus, if you're absolutel

y certain that you'll never be printing 

to LPT2: from  a disk file on hard disk 

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