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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: 01 Nov 2003 03:51:55 pm Post subject: |
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Either I suck at ASM or have bad luck, probably a combination of both. I am trying to detect programs on the ti-83+, and then display them. I am using bcall(_findalphaup). When I run the program it outputs all of the wrong stuff. I tried using bcall(_dispOP1a) instead of bcall(_puts), but then it says "OVERFLOW" error. Here is my source, any ideas?
Code:
;Standard template for ti83+ asm programs
#include "ti83plus.inc";File needed to access system routines
.org userMem-2 ;Define where to start in memory
.db $BB,$6D ;AsmPrgm instruction
bcall(_ZeroOp1)
ld a,ProgObj
ld (Op1),a
ld a,00
ld (op1+1),a
bcall(_findalphaup)
ret c
bcall(_formbase)
bcall(_Op3toOp1)
ld hl,op1
bcall(_puts)
ret
.end ;End of code
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sgm
Calc Guru
Joined: 04 Sep 2003
Posts: 1265
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| Posted: 02 Nov 2003 12:07:22 am Post subject: |
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Jeffrey wrote: Code: bcall(_findalphaup)
ret c
bcall(_formbase)
bcall(_Op3toOp1)
ld hl,op1
bcall(_puts)
I take it you done even have the slightest clue as to what this does? I suggest you try to find out, because what you are doing makes absolutely no sense. |
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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| Posted: 02 Nov 2003 11:57:00 am Post subject: |
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Find alpha up finds the next program in memory and stores it to OP1. Formbase changes OP1 to a null terminated displayable string in OP3. Op3 to Op1 moves the contents of OP3 to Op1. Loading OP1 into hl and then using (puts) would display the contents of OP1.
Of course that doesnt work. I was asking why? I have tried it without formbase, just the alphaup, but then how do you display OP1?
I know I am a novice programmer in ASM, extremely unexperienced with the language. I agree, that I have no clue what I was doing there. I dont supposed you were born with the knowledge of ASM programming. Instead if discouraging someone, why dont you try to post something useful, like an answer? |
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David
The XORcist!
Advanced Member
Joined: 20 May 2003
Posts: 268
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| Posted: 07 Nov 2003 06:03:35 am Post subject: |
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Yeah sigma, you aren't here to be supercilious to those who happen to be less experienced than you in asm.
Jeffrey, _findalphaup returns the program name as a null terminated string in OP1, so there's no need to convert it. _FormBase convert numbers to strings, you see.
All you have to do is just to point HL to OP1+1, where the first char of the program name is, and then do a bcall(_puts).
Code:
ld hl,progobj;H=0, L=progobj
ld (op1),hl ;(OP1)=progobj, (OP1+1)=0
nextprog:
bcall(_findalphaup)
ret c
ld hl,op1+1
bcall(_puts)
bcall(_newline)
jr nextprog
Last edited by Guest on 07 Nov 2003 06:06:36 am; edited 1 time in total |
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Jeffrey
Member
Joined: 12 Jun 2003
Posts: 212
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| Posted: 07 Nov 2003 04:26:52 pm Post subject: |
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(First post as UTI member)---
Thank you very much. It was way less complicated than I was making it out to be... thanks again! |
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