1) From PrintGlyphStructure, pass the glyph data to PrintRasterLine one ENTIRE WORD at a time; calling the PrintRasterLine each time with the next line/WORD of the glyph 2) Implement the code needed in PrintRasterLine to loop through each of the 32 bits of the WORD, MASKING the left most bit, ANDING it. 3) If the value is not zero, print XX (two Xs). If the value is zero, print {space}{space} (two spaces). 4) LEFT SHIFT by one and continue your loop until you've acted on all 32 bits 

THIS IS THE CODE BELOW:

.data FONTDATASIZE = 64 GLYPHSIZE = 68 glyph: .struct character: .byte 0 valid .byte 0 data: .word 0:16 .data .align 4 font: .byte 'A,1 .word 0x00000000,0x00C00000,0X00F80000,0X00FC0000,0X003FE000,0X001FFC00,0X001C7F00,0X001C0F00 .word 0X001C0F00,0X001C7F00,0X001FFC00,0X003FE000,0X00FE0000,0X00F80000,0X00C00000,0X00000000 .byte 'B,1 .word 0x00000000,0x00800100,0x00FFFF00,0x00FFFF00,0x00C0C100,0x00C0C100,0x00C0C100,0x00C0C100 .word 0x00C0C100,0x00C0E300,0x00C0F700,0x00C0FE00,0x00619C00,0x003F0000,0x001E0000,0X00000000 .byte 'C,0 .word 0:16 .byte 'D,1 .word 0x00000000,0x00800100,0x00FFFF00,0x00800100,0x00800100,0x00800100,0x00800100,0x00800100 .word 0x00800100,0x00800100,0x00800100,0x00800100,0x00800100,0x00400200,0x003FFC00,0x00000000 .byte 'E,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0X00C18300,0X00C18300,0X00C18300,0X00C18300,0X00C18300 .word 0X00C18300,0X00C18300,0X00C00300,0X00C00300,0X00C00300,0X00C00300,0X00C00300,0x00000000 .byte 'F,1 .word 0x00000000,0x00800000,0x00FFFF00,0x00FFFF00,0x0080C300,0x0000C300,0x0000C300,0x0000C300 .word 0x0000C300,0x0000C300,0x0000C300,0x0001E300,0x00000300,0x00000300,0x00000700,0x00000000 .byte 'G,1 .word 0x00000000,0x00000000,0x000FF000,0x001FF800,0x003FFC00,0x00600600,0x00600600,0x00600600 .word 0x00600600,0x00638600,0x00638600,0x007F8E00,0x003F8C00,0x00038000,0x00038000,0x00000000 .byte 'H,1 .word 0x00000000,0x007FFE00,0x007FFE00,0x00018000,0x00018000,0x00018000,0x00018000,0x00018000 .word 0x00018000,0x00018000,0x00018000,0x00018000,0x00018000,0x007FFE00,0x007FFE00,0x00000000 .byte 'I,1 .word 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00FFFF00,0x00FFFF00 .word 0x00FFFF00,0x00FFFF00,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000 .byte 'J,1 .word 0x00000000,0x00FF0300,0x00FF0300,0x00C00300,0x00C00300,0x00C00300,0x00C00300,0x00FFFF00 .word 0x00FFFF00,0x00000300,0x00000300,0x00000300,0x00000300,0x00000300,0x00000300,0x00000000 .byte 'K,1 .word 0x00000000,0x00000000,0x00000000,0x003FFC00,0x0003C000,0x00066000,0x000C3000,0x00181800 .word 0x00300C00,0x00200400,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000 .byte 'L,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000 .word 0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00000000 .byte 'M,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x00000700,0x00000E00,0x00001C00,0x00003800,0x0000F000 .word 0x0000F000,0x00003800,0x00001C00,0x00000E00,0x00000700,0x00FFFF00,0x00FFFF00,0x00000000 .byte 'N,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x00000700,0x00001C00,0x00007000,0x0001C000,0x00070000 .word 0x000E0000,0x001C0000,0x00380000,0x00700000,0x00E00000,0x00FFFF00,0x00FFFF00,0x00000000 .byte 'O,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x00C00300,0x00C00300,0x00C00300,0x00C00300,0x00C00300 .word 0x00C00300,0x00C00300,0x00C00300,0x00C00300,0x00C00300,0x00FFFF00,0x00FFFF00,0x00000000 .byte 'P,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x0000C300,0x0000C300,0x0000C300,0x0000C300,0x0000C300 .word 0x0000C300,0x0000C300,0x0000C300,0x0000C300,0x0000C300,0x0000FF00,0x0000FF00,0x00000000 .byte 'Q,1 .word 0x00000000,0x00000000,0x0007F000,0x00181800,0x00300C00,0x00200400,0x00400200,0x00400200 .word 0x00400200,0x00440200,0x00380400,0x00100C00,0x00281800,0x0047F000,0x00000000,0x00000000 .byte 'R,1 .word 0x00000000,0x00000000,0x00000000,0x00000000,0x007FFE00,0x00008200,0x00008200,0x00008200 .word 0x00018200,0x00028200,0x00048200,0x00084400,0x00103800,0x00200000,0x00400000,0x00000000 .byte 'S,0 .word 0:16 .byte 'T,1 .word 0x00000000,0x00001E00,0x00000E00,0x00000600,0x00000600,0x00000600,0x00000600,0x007FFE00 .word 0x007FFE00,0x00000600,0x00000600,0x00000600,0x00000600,0x00000E00,0x00001E00,0x00000000 .byte 'U,1 .word 0x00000000,0x00FFFF00,0x00FFFF00,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000 .word 0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00C00000,0x00FFFF00,0x00FFFF00,0x00000000 .byte 'V,0 .word 0:16 .byte 'W,1 .word 0x00000000,0x00000700,0x00007F00,0x0007F000,0x003F8000,0x007F0000,0x000FE000,0x0001FC00 .word 0x0001FC00,0x001FE000,0x007E0000,0x003F8000,0x0003F000,0x00007F00,0x00000F00,0x00000000 .byte 'X,0 .word 0:16 .byte 'Y,1 .word 0x00000000,0x00000000,0x00000100,0x00000200,0x00000600,0x00000C00,0x00001800,0x00FFF000 .word 0x00FFF000,0x00001800,0x00000C00,0x00000600,0x00000200,0x00000100,0x00000000,0x00000000 .byte 'Z,1 .word 0x00000000,0x00600300,0x00700300,0x00780300,0x006C0300,0x00660300,0x00630300,0x00618300 .word 0x0060C300,0x00606300,0x00603300,0x00601B00,0x00600F00,0x00600700,0x00600300,0x00000000 .data bannerMessage: .asciiz " Please enter the banner message you want printed:" errorMessage: .asciiz " Out of Memory Error!" CLEARSCREEN = '\f COLON = ': CR = ' MASK = 0x80000000 MARGIN = 4 MAXMESSAGE = 100 # 100 characters SPACE = 0x20 X = 'X .code .globl main ########################################################################## # DELAY # input: $a0 is the number of times to iterate without doing anythin ########################################################################## delay: b 2f # for ( $a0=$a0; $a0>0; --$a0) 1: nop addi $a0,$a0,-1 2: bgtz $a0,1b jr $ra ########################################################################## # LeftMargin # Provide a margin along the left edge (cosmetic) ########################################################################## LeftMargin: li $a0,SPACE li $t0,MARGIN # the number of spaces we want b 2f # for ( $t3=$t1; $t3>0; --$t3) 1: syscall $print_char # a0 isn't altered - so no need to keep setting it addi $t0,$t0,-1 2: bgtz $t0,1b jr $ra ########################################################################## # PrintRasterLine # input: $a3 is the raster line # ########################################################################## PrintRasterLine: addi $sp,$sp,-4 # adjust stack for return address sw $ra,0($sp) # save the return address jal LeftMargin # v-- your code below --v # ^-- your code above --^ # we're done, restore the $ra register and $sp stack pointer # lw $ra,0($sp) # restore the return address addi $sp,$sp,4 # undo the adjustment we made to the stack pointer jr $ra ########################################################################## # PrintGlyphStructure # input: $a2 contains the INDEX of the glyph structure to print ########################################################################## PrintGlyphStructure: addi $sp,$sp,-4 # make room on the stack for our variables sw $ra,0($sp) # save our return address la $t0,font # base address of glyphs move $t1,$a2 # index mul $t2,$t1,GLYPHSIZE # offset add $t3,$t0,$t2 # EA = base + offset lb $t5,glyph.valid($t3) beqz $t5,3f # just return from the function if glyph invalid move $t6,$zero 1: beq $t6,FONTDATASIZE,3f move $t7,$t3 # base of the glyph struct addi $t7,$t7,glyph.data # base of the data elements of that glyph struct add $t7,$t7,$t6 # index = offset of the data lw $a3,0($t7) jal PrintRasterLine li $a0,CR syscall $print_char # print the CR # delay # li $a0,0x00700000 # cosmetic - for students to see runtime behavior jal delay addi $t6,$t6,4 # next data line b 1b # we're done, restore the $ra register and $sp stack pointer # 3: lw $ra,0($sp) # restore our return address addi $sp,$sp,+4 # release the storage we allocated on the stack jr $ra ########################################################################## # PrintOnlyCapLettersWithIndexAndCR # input: $a1 contains the starting address of the string ########################################################################## PrintOnlyCapLettersWithIndexAndCR: addi $sp,$sp,-4 # make room on the stack for our variables sw $ra,0($sp) # save our return address 1: lb $t1,0($a1) # load the current character beqz $t1,4f # check if it's the end of the string # if it's a char between a (0x61) through z (0x7A), convert to upper case # blt $t1,0x61,2f # don't print if $a0 < 0x41 (ascii A) bgt $t1,0x7A,3f # don't print if $a0 > 0x5A (ascii Z) sub $t1,$t1,0x20 # make upper case # regardless, be sure it's a char between A (0x41) through Z (0x5A) # 2: blt $t1,0x41,3f # don't print if $a0 < 0x41 (ascii A) bgt $t1,0x5A,3f # don't print if $a0 > 0x5A (ascii Z) addi $a2,$t1,-0x41 # difference jal PrintGlyphStructure 3: li $a0,CR syscall $print_char # print the CR addi $a1,$a1,1 # next character # delay # li $a0,0x00700000 # cosmetic - for students to see runtime behavior jal delay b 1b # we're done, restore the $ra register and $sp stack pointer # 4: lw $ra,0($sp) # restore our return address addi $sp,$sp,+4 # release the storage we allocated on the stack jr $ra ########################################################################## # main ########################################################################## main: li $a0,CLEARSCREEN syscall $print_char la $a0,bannerMessage # have the user enter their banner message syscall $print_string li $a0,MAXMESSAGE syscall $malloc beqz $v0,error move $s0,$v0 move $a0,$s0 # have the user enter their message li $a1,MAXMESSAGE syscall $read_string li $a0,CR syscall $print_char # cosmetic spacing syscall $print_char # cosmetic spacing syscall $print_char # cosmetic spacing move $a1,$s0 # load address of alphabet message into $a1 jal PrintOnlyCapLettersWithIndexAndCR move $a0,$s0 # we no longer need the storage, free it syscall $free b done error: la $a0,errorMessage # if we have an error syscall $print_string done: syscall $exit