Int 54 - Irq4 Relocated By Desqview Int 54 - Irq4 Relocated By Ibm 3278 Emulation Control Program, Os/2 V1.x Int 54 - Ti Professional Pc - Activate Task Subroutine Int 54 - Tandy 2000 - Line Printer Int 54 Fn 5400 U - Toshiba Pcmcia2 - Installation Check