INT 16 U - PCIBM PC Tools v8+ DRIVEMAP - ??? AX = FF70h BX = 0002h CX = ??? DX = ??? Return: AX = ??? or FFFEh/FFFFh on error DL = ??? BUG: DRIVEMAP will branch to random locations for BX values other than those listed above for v8.0-9.0 because a) the incorrect register is range-tested, resulting in BX=0003h-5CD6h being accepted as valid function numbers, and b) the conditional which branches on invalid function numbers jumps to the following instruction, becoming a NOP SeeAlso: INT 2F/AX=9203h"DRIVEMAP" Index: installation check;DRIVEMAP