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WILL $$$$ PAY FOR HELP WRITEING THIS PROGRAM !!!!!!!!!!! Z80

[size=4]20 - 50[/size] DOLLARS FOR HELP MY EMAIL ADDRESS IS : NOCMSA@YAHOO.COM CONTACT ME FOR MORE INFORMATION
1.Write a Z80 program that reads 10 bytes of data from and array
whose base address starts at 2020H, adds each data byte to 2H and then stores
the sum at a 10 byte array whose base address is 3020H. Show solution with
comments for each line & fully explain how it works.

2: Interpret and fully explain the function of the following program.
Provide a full explanation and comments for each line. Hint: 2040H contains
the data byte 22H. What is the resulting number, in hex, which is contained in
the address 2070H after the program when the program halts?
Memory Address Z80 Machine Code
300A 21 #
300B 40 #
300C 20 #
300D 01 #
300E 70 #
300F 20 #
3010 7E #
3011 3C #
3012 A6 #
3013 02 #
3014 36 #
3015 00 #
3016 76 #

3: Write a PIC 18 Series Assembly Program, (i.e. just the Main), to
take in an 8 bit literal number, A, and an 8 bit literal number, B, and to
obtain C = A x B, and to store C in variables, Shigh, and Slow, respectively,
Then have the program multiply each of them, i.e. Shigh and Slow by 4, Mod 256,
without using the multiply function.







4: Interpret and fully explain the following program (next sheet),
which is written in PIC 18 Assembly language. Provide comments and a general
explanation of what the program does.
Solution / Explanation:
;******************************************************************************
; This file is a basic template for creating relocatable assembly code for *
; a PIC18F4520. Copy this file into your project directory and modify or *
; add to it as needed. Create a project with MPLINK as the language tool *
; for the hex file. Add this file and the 18F4520.LKR file to the project. *
; *
; The PIC18FXXXX architecture allows two interrupt configurations. This *
; template code is written for priority interrupt levels and the IPEN bit *
; in the RCON register must be set to enable priority levels. If IPEN is *
; left in its default zero state, only the interrupt vector at 0x008 will *
; be used and the WREG_TEMP, BSR_TEMP and STATUS_TEMP variables will not *
; be needed. *
; *
; Refer to the MPASM User's Guide for additional information on the *
; features of the assembler and linker. *
; *
; Refer to the PIC18Fxx20 Data Sheet for additional *
; information on the architecture and instruction set. *
; *
;******************************************************************************
; *
; Filename: *
; Date: *
; File Version: *
; *
; Author: *
; Company: *
; *
;******************************************************************************
; *
; Files required: P18F4520.INC *
; 18F4520.LKR *
; *
;******************************************************************************
LIST P=18F4520, F=INHX32 ;directive to define processor and file format
#include ;processor specific variable definitions
;******************************************************************************
;Configuration bits
;Microchip has changed the format for defining the configuration bits, please
;see the .inc file for futher details on notation. Below are a few examples.
; Oscillator Selection:
CONFIG OSC = LP ;LP
;******************************************************************************
;Variable definitions
; These variables are only needed if low priority interrupts are used.
; More variables may be needed to store other special function registers used
; in the interrupt routines.
; Test variables, simple sum
UDATA
WREG_TEMP RES 1 ;variable in RAM for context saving
STATUS_TEMP RES 1 ;variable in RAM for context saving
BSR_TEMP RES 1 ;variable in RAM for context saving
MUL RES 1 ;
SPECIAL RES 1 ;
INTDIV1 RES 1 ;
IntDiv RES 1 ;
UDATA_ACS
EXAMPLE RES 1 ;example of a variable in access RAM
;******************************************************************************
;EEPROM data
; Data to be programmed into the Data EEPROM is defined here
DATA_EEPROM CODE 0xf00000
DE "Test Data",0,1,2,3,4,5
;******************************************************************************
;Reset vector
; This code will start executing when a reset occurs.
RESET_VECTOR CODE 0x0000
goto Main ;go to start of main code
;******************************************************************************
;High priority interrupt vector
; This code will start executing when a high priority interrupt occurs or
; when any interrupt occurs if interrupt priorities are not enabled.
HI_INT_VECTOR CODE 0x0008
bra HighInt ;go to high priority interrupt routine
;******************************************************************************
;Low priority interrupt vector
; This code will start executing when a low priority interrupt occurs.
; This code can be removed if low priority interrupts are not used.
LOW_INT_VECTOR CODE 0x0018
bra LowInt ;go to low priority interrupt routine
;******************************************************************************
;High priority interrupt routine
; The high priority interrupt code is placed here.
CODE
HighInt:
; *** high priority interrupt code goes here ***
retfie FAST
;******************************************************************************
;Low priority interrupt routine
; The low priority interrupt code is placed here.
; This code can be removed if low priority interrupts are not used.
LowInt:
movff STATUS,STATUS_TEMP ;save STATUS register
movff WREG,WREG_TEMP ;save working register
movff BSR,BSR_TEMP ;save BSR register
btfsc PIR1,0 ;
goto int_timer1 ;
btfsc INTCON, 1 ;
goto int_extpin33 ;
goto int_end ;
int_timer1 ;
incf SPECIAL
movf SPECIAL,W
addlw 0x30 ;
movwf TXREG
movlw Timer1L ;
movwf TMR1L ;
movlw Timer1H ;
movwf TMR1H ;
bcf PIR1,0 ;
decfsz INTDIV1 ;
goto int_end
int_extpin33
movwf TXREG
movlw IntDiv
movwf INTDIV1 ;
bcf INTCON, 1
int_end ;
movff _w, w
movff _status, STATUS
movff _bsr, BSR
retfie ; return from int
movff BSR_TEMP,BSR ;restore BSR register
movff WREG_TEMP,WREG ;restore working register
movff STATUS_TEMP,STATUS ;restore STATUS register
retfie
;******************************************************************************
;Start of main program
; The main program code is placed here.
Main:
; *** main code goes here ***
bsf INTCON, 6 ;
clrf MUL ;
movlw 0x44 ;
movwf MUL ;
movlw 0x44 ;
mulwf MUL ;
goto $
;******************************************************************************
;End of program
END
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