HW5-3750 - 1 EE 3750 Homework 5 due Wed May 3 2006 For all...

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1 OVER EE 3750 — Homework 5 due Wed., May 3, 2006 For all problems: state any assumptions made; include comments as needed to make assembly instruction sequences clear. 1. Write an interrupt service routine for an 8086 to input a word of data from device DEV6, then store it in array ORANGE if the value of the data is odd. Assume that word variable POINTER holds the offset to which the next word is to be stored in ORANGE. Let the address of the input data port of DEV5 be 6CCH. The interrupt service routine should input only one word on each interrupt from DEV6. 2. Write an 8086 instruction sequence to enable interrupts when Port B of an 82C55 (parallel interface) is ready for output where Group B is in Mode 1. Assume that the modes and input/output directions of the 82C55 have already been initialized. Let B8H be the lowest port address for this 82C55. 3. Write an 8086 instruction sequence to initialize a 16550 UART (serial interface). Set
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