pic16f887 clock project, need help

I am trying to set the time of my clock with a key pad. I start a loop by pressing the * which sends it to my hours loop which starts checking for my key pad inputs. Like if num1=1 then hour=1 or if num1 & num0=1 then hour=10. The problem is when i get to minutes and you have to numbers like 21 and 12 i dont what i can do to distinguish between the two.Another problem is when you get double digits like 11 or 22.

Also is there an better way to do this without doing TONS of if thens.

Code:

@ ERRORLEVEL -306 digit1 var portc.6'portd.0 digit2 var portc.4'portd.1 digit3 var portc.5'portd.2 digit4 var portc.7'portd.3 digit5 var portd.4 digit6 var portd.5 check var byte cnt var word digit var byte pattern var byte i var word truby var byte first var byte second var byte third var byte fourth var byte fifth var byte sixth var byte mills var word seconds var byte mins var byte hour var byte ampm var portb.7 parker var byte num1 var portd.0'portc.6 num2 var portb.5 num3 var portb.4 num4 var portb.3 num5 var portb.2 num6 var portb.1 num7 var portb.0 num8 var portd.1'portc.4 num9 var portd.2 'portc.5 numstar var portb.6 num0 var portd.3 'portc.7 DEFINE num1_PAUSE 1000 define num2_PAUSE 1000 define num3_PAUSE 1000 define num4_PAUSE 1000 define num5_PAUSE 1000 define num6_PAUSE 1000 define num7_PAUSE 1000 define num8_PAUSE 1000 define num9_PAUSE 1000 define numstar_PAUSE 1000 define num0_PAUSE 1000 'CM2CON0=0 'CM1CON0=0 ANSELH=0 seconds=45 mins=59 hour=1 mills=1 cnt=0 ANSEL=0 truby = 0 INTCON=%10100000 OPTION_REG=%00000000 TMR0=6 on interrupt goto isr INTCON=%10100000 trise=1 trisa=0 'trisd=0 trisd=%00001111 trisb=%01111111 trise=1 trisc=1 ampm=1 parker=0 portb=1 portc=1 loopa: if portc.3=1 then mills=mills+1000 while portc.3=1 wend endif if mills>59 then mills=0 seconds=seconds+30 endif if seconds>59 then seconds=0 mins=mins+1 endif if mins>59 then mins=0 hour=hour+1 endif if hour>11 then hour=1 parker=1 if parker=0 then ampm=0 else ampm=1 endif endif if numstar=0 then seconds = 0 mins = 0 hour = 0 goto delay endif goto loopa delay: for i=0 to 20 pause 1 next i goto loophour loophour: if num2 = 0 then hour = 2 for i=0 to 20 pause 1 next i goto loopmins endif pause 100 if num1 = 0 & num0=1 then hour = 1 for i=0 to 20 pause 1 next i goto loopmins endif if num3 = 0 then hour = 3 for i=0 to 20 pause 1 next i goto loopmins endif if num4 = 0 then hour = 4 for i=0 to 20 pause 1 next i goto loopmins endif if num5 = 0 then hour = 5 for i=0 to 20 pause 1 next i goto loopmins endif if num6 = 0 then hour = 6 for i=0 to 20 pause 1 next i goto loopmins endif if num7 = 0 then hour = 7 for i=0 to 20 pause 1 next i goto loopmins endif if num8 = 0 then hour = 8 for i=0 to 20 pause 1 next i goto loopmins endif if num9 =0 then hour =9 for i=0 to 20 pause 1 next i goto loopmins endif pause 100 if num1=0 and num0=0 then hour=10 for i=0 to 20 pause 1 next i goto loopmins endif if numstar=0 then for i=0 to 20 pause 1 next i goto loopa else goto loophour endif loopmins: if num2 = 0 then mins = 2 for i=0 to 20 pause 1 next i goto loopsec endif if num1 =0 then mins=1 for i=0 to 20 pause 1 next i goto loopsec endif if num3=0 then mins=3 for i=0 to 20 pause 1 next i goto loopsec endif if num4=0 then mins=4 for i=0 to 20 pause 1 next i goto loopsec endif if num5=0 then mins=5 for i=0 to 20 pause 1 next i goto loopsec endif if num6=0 then mins=6 for i=0 to 20 pause 1 next i goto loopsec endif if num7=0 then mins=7 for i=0 to 20 pause 1 next i goto loopsec endif if num8=0 then mins=8 for i=0 to 20 pause 1 next i goto loopsec endif if num9=0 then mins=9 for i=0 to 20 pause 1 next i goto loopsec endif if num1&num0=0 then mins=10 for i=0 to 20 pause 1 next i goto loopsec endif if numstar=0 then for i=0 to 20 pause 1 next i goto loopa else goto loopmins endif loopsec: if num2 = 0 then seconds = 2 for i=0 to 20 pause 1 next i endif if num1 = 0 then seconds=1 for i=0 to 20 pause 1 next i endif if num3=0 then seconds=3 for i=0 to 20 pause 1 next i endif if num4=0 then seconds=4 for i=0 to 20 pause 1 next i endif if num5=0 then seconds=5 for i=0 to 20 pause 1 next i endif if num6=0 then seconds=6 for i=0 to 20 pause 1 next i endif if num7=0 then seconds=7 for i=0 to 20 pause 1 next i endif if num8=0 then seconds=8 for i=0 to 20 pause 1 next i endif if num9=0 then seconds=9 for i=0 to 20 pause 1 next i endif if numstar=0 then for i=0 to 20 pause 1 next i goto loopa else goto loopsec endif disable isr:TMR0=6 digit=hour dig 1 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit6=1 pauseus 500 digit6=0 digit=hour dig 0 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit5=1 pauseus 500 digit5=0 digit=mins dig 1 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit4=1 pauseus 500 digit4=0 digit=mins dig 0 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit3=1 pauseus 500 digit3=0 digit=seconds dig 1 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit2=1 pauseus 500 digit2=0 digit=seconds dig 0 lookup digit,[$3F,$06,$5B,$4F,$66,$6D,$7D,$07,$7F,$6F],pattern porta=pattern digit1=1 pauseus 500 digit1=0 cnt=cnt+1 intcon.2=0 resume enable end