检查磁盘剩余空间
10 DEFINT A-Z:DEF SEG=& H7000
20 F=0: A=0: INPUT“请输入驱动器号”;D
30 FOR I=0 TO 20: READ J: POKE I,J:NEXT I
40 CALL A(F,D)
50 PRINT:PRINT“剩余空间”;F*1024
60 DATA & h 55,& H8b,& hec,& h8b,& h76,& h06,& h8b
70 DATA &h14, &h64, &h36, &hcd, &h21, &h8b, &h7e
80 DATA &h08, &h89, &h1d, &h5d, &hca, &h04, &h00