标题: 判断光驱是否装入的BASIC源程序 [打印本页]

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作者: qb45     时间: 2003-9-20 00:00    标题: 判断光驱是否装入的BASIC源程序

'$INCLUDE: 'qb.bi'
DIM SHARED ax, bx, cx, dx
PRINT "光驱的盘幅为";disk$

FUNCTION disk$
DIM d$(25)
d$(0) = "A:": d$(1) = "B:": d$(2) = "C:": d$(3) = "D:": d$(4) = "E:": d$(5) = "F:"
d$(6) = "G:": d$(7) = "H:": d$(8) = "I:": d$(9) = "J:": d$(10) = "K:": d$(11) = "L:"
ax = &H1500
int2f
IF bx = 0 THEN PRINT "没有找到光驱 --No  CDRom" ELSE disk$ = d$(cx)
END FUNCTION

SUB int2f
InRegs.ax = ax
InRegs.bx = bx
InRegs.cx = cx
InRegs.dx = dx
InRegs.flags = flags
INTERRUPTX &H2F, InRegs, OutRegs
ax = OutRegs.ax
bx = OutRegs.bx
cx = OutRegs.cx
dx = OutRegs.dx
flags = OutRegs.flags
END SUB

[em09]

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作者: qb45     时间: 2003-9-29 00:00
说明：INT 2F 中断   入口AH=15H      
  BX返回为零时没有光驱！