Int 61 Fn 1A  - Atari Portfolio - Get Peripheral Id Byte                   [b]

   AH = 1Ah

Return: AH = peripheral ID byte
   AL = 00h if no peripheral installed
Desc:  get the ID code for the current terminating peripheral

See Also: AH=00h"Portfolio",AH=18h"Portfolio",AH=1Bh"Portfolio"