Hex to Decimal

21 June 2006, 14:08

..

Galahad/FLT · 21 June 2006, 15:24

lea converted_string(pc),a2
move.l d0,d2
moveq #8-1,d3
nextconversion:
rol.l #4,d2
move.l d2,d4
and.l #$f,d4
add.l #"0",d4
cmp.l #"9",d4
bls.s skip_addition
addq.l #7,d4
skip_addition:
move.b d4,(a2)+
dbra d3,nextconversion

converted_string: dcb.b 8+2,0

21 June 2006, 16:46

Lets say at address $300 i have the HEX value F. I want to turn this single value in to decimal..

NOB · 21 June 2006, 18:09

Maybe this is of any use(from asm manual):

Galahad/FLT · 21 June 2006, 18:31

moveq #0,d0
moveq #0,d1
move.b $300.s,d0
divu.w #$a,d0
move.b d0,d1
rol.l #4,d1
swap d0
add.b d0,d1

Converted value will be left in d1

I've never had to do it before, so forgive the non-optimisation!

Also, because its a byte conversion, its only good up to a hex value of $63 (99 in decimal). But it does as you requested

21 June 2006, 18:36

Quote:

Originally Posted by Galahad/FLT

moveq #0,d0
moveq #0,d1
move.b $300.s,d0
divu.w #$a,d0
move.b d0,d1
rol.l #4,d1
swap d0
add.b d0,d1

Converted value will be left in d1

I've never had to do it before, so forgive the non-optimisation!

Also, because its a byte conversion, its only good up to a hex value of $63 (99 in decimal). But it does as you requested

Amazing!

Just what i needed, thanks

Galahad/FLT · 21 June 2006, 18:50

I assume its for a trainer menu

21 June 2006, 19:17

Quote:

Originally Posted by Galahad/FLT

I assume its for a trainer menu

Hehe, yeah. Its for Great Giana Sisters. It uses HEX in game code to determine level nr. But nr. shown on screen is decimal. Its to be used for the level selector function, so it shows correct level on screen.

21 June 2006, 19:22

Now that we are at the trainers, perhaps you could help out on Magic Pockets. In game progress, it stores level nr. at 171e.w and stage nr. at 1720.w. The instruction at $4f2c set the start level to 1. If i change this to ex. 2, it loads level 1 anyway, but level acts & look strange, so there must be another value to be set..

21 June 2006, 14:08	#1
-Rob- Posts: n/a	Hex to Decimal .. Last edited by -Rob-; 23 June 2008 at 00:46.

21 June 2006, 15:24	#2
Galahad/FLT Going nowhere Join Date: Oct 2001 Location: United Kingdom Age: 50 Posts: 8,986	This what you want? lea converted_string(pc),a2 move.l d0,d2 moveq #8-1,d3 nextconversion: rol.l #4,d2 move.l d2,d4 and.l #$f,d4 add.l #"0",d4 cmp.l #"9",d4 bls.s skip_addition addq.l #7,d4 skip_addition: move.b d4,(a2)+ dbra d3,nextconversion converted_string: dcb.b 8+2,0

21 June 2006, 18:31	#5
Galahad/FLT Going nowhere Join Date: Oct 2001 Location: United Kingdom Age: 50 Posts: 8,986	This then... moveq #0,d0 moveq #0,d1 move.b $300.s,d0 divu.w #$a,d0 move.b d0,d1 rol.l #4,d1 swap d0 add.b d0,d1 Converted value will be left in d1 I've never had to do it before, so forgive the non-optimisation! Also, because its a byte conversion, its only good up to a hex value of $63 (99 in decimal). But it does as you requested

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21 June 2006, 16:46	#3
-Rob- Posts: n/a	Lets say at address $300 i have the HEX value F. I want to turn this single value in to decimal..

21 June 2006, 18:50	#7
Galahad/FLT Going nowhere Join Date: Oct 2001 Location: United Kingdom Age: 50 Posts: 8,986	I assume its for a trainer menu

21 June 2006, 19:22	#9
-Rob- Posts: n/a	Now that we are at the trainers, perhaps you could help out on Magic Pockets. In game progress, it stores level nr. at 171e.w and stage nr. at 1720.w. The instruction at $4f2c set the start level to 1. If i change this to ex. 2, it loads level 1 anyway, but level acts & look strange, so there must be another value to be set..

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