== AMSDOS RAM 1 (always at BE40h..BE7Fh) ==
BE40 2 Pointer to CP/M DPH for Drive A and drive B (A910h) (CPM:AE58h) (see below)
BE42 2 Pointer to XPDB for Drive A and drive B (A890h) (CPM:ADD8h)
BE44 2 Delay for Motor Spin-up in 1/50 seconds (0032h)
BE46 2 Delay for Motor Spin-down in 1/50 seconds (00FAh)