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Z80 & 68k Assembly =>
z80 & ez80 Assembly
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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 Posted: 13 Oct 2003 06:40:15 pm Post subject: |
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I know how to store input as a string in APPBACKUPSCREEN, I learned from the Input routine on Cirrus. But say I wanted to make a password program, the password itself was built into the prog. Is there a way to say maybe:
Code:
...the user has already input his password...
ld hl, appbackupscreen
ld de, password
-->(compare hl to de)<--
jr z, success
ret
success:
etc...
password:
.db "passw",0
Or is there another way to make a password program with SMC maybe? |
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Adm.Wiggin
aka Tianon
Know-It-All
Joined: 02 Jun 2003
Posts: 1874
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| Posted: 13 Oct 2003 07:26:19 pm Post subject: |
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bcall(_cpHLDE) or the other way around bcall(_cpDEHL) think its the first though...
that should work, but you would have to check if the WHOLE pword is the same... that would just check if the locations are the same... |
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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| Posted: 13 Oct 2003 07:37:26 pm Post subject: |
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| How would I check the whole password (Im new at asm, so stupid questions abound when i post) lol |
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NETWizz
Byte by bit
Bandwidth Hog
Joined: 20 May 2003
Posts: 2369
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| Posted: 14 Oct 2003 05:20:22 pm Post subject: |
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how about:
ld de,string1
ld hl,string2
ld b,8
call(mystrroutine)
; if Z is set, strings match, else NZ set
mystrroutine:
ld a,(de)
cp (hl)
ret nz
inc de
inc hl
djnz mystrroutine
ret |
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sgm
Calc Guru
Joined: 04 Sep 2003
Posts: 1265
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| Posted: 20 Oct 2003 04:52:26 pm Post subject: |
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Optimized somewhat
Code:
ld de,string1
ld hl,string2
ld bc,8
call mystrroutine
; if Z is set, strings match, else Z reset
mystrroutine:
ld a,(de)
cpi
ret nz
inc de
jp pe,mystrroutine
ret
Last edited by Guest on 20 Oct 2003 04:53:12 pm; edited 1 time in total |
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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| Posted: 21 Oct 2003 07:44:57 pm Post subject: |
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| or just by using bcall(_cmpsyms) if the strings are the same length, checking that by using bcall(_strlength) |
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