Author Topic: Need help with ExecAns//NikProgrammer (Read 8545 times)

NikProgrammer · « **on:** June 16, 2014, 06:25:42 pm »

So...
ExecAns is a Hex Program, it takes a string in Ans as Input, deletes prgmU, creates it again, copies Ans to prgmU and runs it... I use it to crate/edit a custom named list. Ans equals "matr>list(|F|,Lxxxxx)". I use 'matr>list()' because I can't use the -> sign in strings without some help of the user... But, well, this is not important in the problem (I think). The problem is when I call ExecAns as subprogram from prgmNFTEXT it creates a fine prgmU with a fine 'matr>list(|F|,Lxxxxx)' but intstead of running it and returning to the prgmNFTEXT it returns to the OS.

Codes:

PrgmNFTEXT

:;Much code, not important. The name of the list is alteady in Str0
:"matr>list(|F|,L"+Str0 ;Input for ExecAns
:Asm(prgmExecAns
:Pause ;I will work on here when the problem is solved. The pause is only to check if the program reached it but is doesn't.

Prgm ExecAns

AsmPrgm
EFD74A
FE04C0
215500
22EC86227984
21F086
EB4E234623
ED43EE86
EDB0
3E05327884
EFF142
3803EFC64F
3E0521EC86
EF3C4C
C9

ben_g · « **Reply #1 on:** June 16, 2014, 06:38:26 pm »

I can't really help you with the HEX program, sorry, but maybe there is an other way of doing what you want to do.
For what do you need custom-named lists? They are hard to create, and it's hard to know which ones are used by your program. If you need to remember names or other text, then you might want to save it in a different way than in custom-named lists.
If you really need them though, then you should try running it in an emulator that has a debugger. (an example of this is wabbitemu)Then you can see what the program does step by step, and track down the orgin of your problem. To make debugging easier, you can add F376 to the start of the (assembly) program (ONLY WHEN YOU4RE EMULATING IT) which basically freezes the calc, but you can disable the halt mode of the CPU from within the debugger to make it continue executing the program.

chickendude · « **Reply #2 on:** June 16, 2014, 11:47:11 pm »

I already posted the mnemonics version in the other thread. There are very few people here who can look at the hex codes and understand it easily without having to look them up. Here're the mnemonics:

Code: [Select]

;(saferam1 = saveSScreen)
name_str = saferam1
size = saferam1+2
code_start = saferam1+4

start:
    bcall(_RclAns)            ;set pointer into OP1
    cp 4
     ret nz
    ld hl,$55                ;ASCII for 'U'
    ld (name_str),hl        ;save zero terminated string name
    ld (OP1+1),hl
    ld hl,code_start
    ex de,hl                ;de = code_start, hl = ans ptr?
    ld c,(hl)                ;i assume bc = size of Ans
    inc hl
    ld b,(hl)
    inc hl
    ld (size),bc
    ldir                    ;copy code in Ans into saferam
    bcall(_ChkFindSym)
     jr c,not_found
        bcall(_DelVarArc)    ;del prgmU if it existed
not_found:
    ld a,5                    ;5 = non-protected program
    ld hl,saferam1
    bcall(_ExecuteNewPrgm)    ;a = var type, hl = pointer to structure (zero terminated string, size (word), program data)
    ret

I feel like the problem is probably with how ExecuteNewPrgm works. Though that's a really roundabout way of doing it, why don't you use the _CreateRList bcall? Also, how will you write to/read from the list later?

NikProgrammer · « **Reply #3 on:** June 18, 2014, 02:40:49 am »

Quote from: chickendude on June 16, 2014, 11:47:11 pm

Though that's a really roundabout way of doing it, why don't you use the _CreateRList bcall? Also, how will you write to/read from the list later?

I already said, I don't know any ASM so _CreateRList bcall means nothing for me.
And the second answer, to edit a list I do:

:List>matr(Lxxxxx,|F|) ;Like creating the list. I will use ExecAns for that
: ;Blahblah, editing |F|
:Matr>List(|F|,Lxxxxx) ;Again with ExecAns

I know, the code is a bit weird but it should work if ExecAns would not stop the main program... Or if there is another way, TI-Basic or ASM, I'd be very happy to find it.

Runer112 · « **Reply #4 on:** June 18, 2014, 08:41:35 am »

If you don't know what a B_CALL does, look for it on WikiTI or in TI's official documentation. Most of the important ones are documented, including _CreateRList. It's actually documented in both, but I can only directly link to WikiTI's documentation (which is slightly better anyways).

NikProgrammer · « **Reply #5 on:** June 22, 2014, 05:17:50 pm »

Hmm... I cant imagine what makes the program stop (in fact I only found out that removing the ret/C9... guess what...

Doesn't crash, it still completely stops the program!)... Is there any other way to do that?
What I need is just a text editor which stores the documents in lists... And the lists' names are the document names.

Wait, doesn't it mean it just fails executing and stops before that?

chickendude · « **Reply #6 on:** June 23, 2014, 07:08:37 pm »

It would be easier to use _CreateRList and pass the information in the list. But why not just use an AppVar instead? I don't think lists can hold strings, so you'd have to break your strings down into different entries and it'd just be complex. With an AppVar you can just store your string directly since it's essentially just a block of memory, and as a bonus you don't have to worry about people editing them except with your program.

NikProgrammer · « **Reply #7 on:** June 24, 2014, 12:01:46 pm »

Hmm... I don't want to store strings, I use 5 ASCII characters in a number and get a pretty compact way of storage. And I just have to repeat I am programming in Basic and don't know any ASM.

chickendude · « **Reply #8 on:** June 25, 2014, 11:11:38 am »

That number probably takes up 1 byte per letter, anyway, plus any overhead for a new list entry. If you store them directly as strings in an AppVar i think it'd be easier and more efficient. I could write something that takes the string in Ans and writes it to a certain AppVar. It wouldn't be too hard.

Xeda112358 · « **Reply #9 on:** June 25, 2014, 11:31:36 am »

Quote from: NikProgrammer on June 22, 2014, 05:17:50 pm

Hmm... I cant imagine what makes the program stop (in fact I only found out that removing the ret/C9... guess what... Doesn't crash, it still completely stops the program!)... Is there any other way to do that?
What I need is just a text editor which stores the documents in lists... And the lists' names are the document names.

Wait, doesn't it mean it just fails executing and stops before that?

What is happening here is that all of the memory after the data is being executed as code. It may be exiting properly if it comes across an RET instruction, but it may also instead be jumping into the middle of an OS routine that makes it appear to exit without any problems. I've done this a number of times when I was first experimenting-- the program exited fine, it seemd like everything was alright, then a while later there was a crash or I would look through the memory menu and see lots of glitchy things. Presumably the data executed as code managed to jump around RAM, editing things to unknown values.

NikProgrammer · « **Reply #10 on:** June 25, 2014, 12:06:16 pm »

These two last replies where the mist helpful...
So @xeda Maybe you are right but I tried everything you can do with this program on an emilator and got no problems... The weirdest thing was if you temove the code line by line and execute it after each change it will do exactly the same thing until you remove the AsmPrgm- then it throws an error. (Yes, this means that I got a program with only AsmPrgm inside and it created a prgmU with a string inside

) I also once just removed the C9 (probably you read it)but nothing else not-normal.
And @Chickendude, this would be probably the best way... But this will be harder than you think because I need to edit these appvars. That's why I use lists, for me it's the easiest way to make editable appvars and if I did not want to name them like the document there were no problems... So IF you can write a short program to create, edit, read and delete appvars (maybe even supporting lists and strings)- this would be VERY good and I would be very thankful... But else you don't ever have to try, this would be just spent-for-nothing time... Maybe it really shouldn't be appvars, only something like ExecAns that doesn't stop. I can handle the rest with the program...

Is there anything new?

chickendude · « **Reply #11 on:** June 28, 2014, 03:17:57 pm »

I just wrote a program (151 bytes) that takes the following format: [1:NAME_OF_APPVAR:STRING_TO_STORE] to store a string to an AppVar or [2:NAME_OF_APPVAR] to store the contents of the AppVar into Ans. Here's the assembly:

Code: [Select]

#include "includes/ti83plus.inc" 
 
.db t2ByteTok,tasmCmp            ;the AsmPrgm token 
.org $9D95                        ;progstart, all asm programs are loaded to this address in RAM 
 
saferam1 =$86EC                    ;saveSScreen=768 
name_str = saferam1
size = saferam1+7
code_start = saferam1+9

start:
    bcall(_RclAns)                ;de = start of data, first two bytes are size bytes
    cp 4                        ;if ans is a string, a = 4
     ret nz
    ex de,hl
    ld e,(hl)
    inc hl
    ld d,(hl)                    ;de = size of Ans
    inc hl
    ld a,(hl)                    ;a = action # (1 or 2)
    inc hl                        ;hl = start of string name
    dec de                        ;the first byte is the action number
    dec de
    dec de
    dec de
    dec de
    dec de                        ;-5 for the string name
    ld (size),de
    dec hl
    ld (hl),AppVarObj
    ld de,name_str                ;copy name in Ans to name_str
    ld bc,6
    ldir
    ld (code_start),hl
    ex de,hl
    ld (hl),0
    ld hl,name_str
    rst 20h                        ;_Mov9ToOP1, copy 9 bytes from (hl) to OP1 (copies our AppVar name)

    sub '1'                        ;$31
     jr z,write_appvar
    dec a
     ret nz
read_appvar:
    bcall(_ChkFindSym)
     ret c
    ex de,hl
    ld c,(hl)                    ;first two bytes are the size bytes
    inc hl
    ld b,(hl)                    ;bc = size of Ans
    inc hl
    ld (size),bc
    ld de,code_start
    ldir                        ;copy the whole string to code_start
    bcall(_AnsName)
    bcall(_ChkFindSym)
    bcall(_DelVar)
    bcall(_AnsName)
    bcall(_ChkFindSym)

    ld a,StrngObj
    ld hl,(size)
    bcall(_CreateVar)
    ld bc,(size)
    inc bc
    inc bc                        ;rewrite the size bytes
    ld hl,size
    ldir
    ret
write_appvar:
    ld hl,(size)
    bcall(_EnoughMem)            ;check if we've got enough space to create the AppVar
     ret c
    ex de,hl
    push hl
        push hl
            bcall(_ChkFindSym)    ;OP1 = name of variable to find
             jr c,$+5
                bcall(_DelVarArc)    ;delete AppVar if it already exists
        pop hl
        bcall(_CreateAppVar)    ;OP1 = name, hl = size
    pop bc
    inc de
    inc de                        ;skip size word
    ld hl,(code_start)
    ldir                        ;copy Ans into AppVar
    ret

The AppVar name must be 5 characters long, if you don't want to use 5 characters just fill them with spaces. There isn't very much error checking since that would increase the size of the program a bit. I'd recommend sending the .8xp to your calc, but here's the hex codes just in case. Be careful, if you give the wrong inputs (for example, not giving it any data making it try to create an AppVar of size 0) you risk clearing your RAM.

Optimizations are welcome

Spoiler For Hex codes:

Code: [Select]

EFD74A 
FE04 
C0 
EB 
5E 
23 
56 
23 
7E 
23 
1B 
1B 
1B 
1B 
1B 
1B 
ED53F386 
2B 
3615 
11EC86 
010600 
EDB0 
22F586 
EB 
3600 
21EC86 
E7 
D631 
2837 
3D 
C0 
EFF142 
D8 
EB 
4E 
23 
46 
23 
ED43F386 
11F586 
EDB0 
EF524B 
EFF142 
EF5143 
EF524B 
EFF142 
3E04 
2AF386 
EF704E 
ED4BF386 
03 
03 
21F386 
EDB0 
C9 
2AF386 
EFFD42 
D8 
EB 
E5 
E5 
EFF142 
3803 
EFC64F 
E1 
EF6A4E 
C1 
13 
13 
2AF586 
EDB0 
C9

NikProgrammer · « **Reply #12 on:** June 28, 2014, 04:14:01 pm »

Wow, thanks!!! But how do I translate to hex? I can download this but I found a table how to toggle options with ASM and want to try this on an emulator (

)
Haha, I learned/understood a bit more ASM than from ASM in 28 days:) Thank you for the comments too!

chickendude · « **Reply #13 on:** June 28, 2014, 05:24:56 pm »

The hex codes should be in the spoiler at the bottom of the post, so you should be able to use those. The program is pretty long, though, so it'd be much more convenient just to load the .8xp. If you've got any questions about the code feel free to ask, it appears that the information on some of those BCALLs at WikiTI isn't complete, _RclAns for example will also load the pointer to its data if Ans isn't a number, basically just like _ChkFindSym. From the 83 Plus System Routines Guide:

Quote

RclVarSym will recall the contents of the variable to OP1 if it is real, to OP1 and OP2 if the variable is complex and otherwise leaves the name as is in OP1 and returns HL as the symbol table pointer and DE as the data pointer as in ChkFindSym.

If there's anything else you'd like added (or if you find something that doesn't work), let me know and i'll see what i can do to add/fix it

NikProgrammer · « **Reply #14 on:** June 29, 2014, 02:23:35 am »

Now I think: Is there any user protection? Because I do not think it will be good if somebody tries to run this interesting, small program ZASM10 to see what things it may do and have his RAM cleared or even worse...

And even more questions: Can I post this at 'Assembly Hex Codes' in TI-Basic developer?

Author Topic: Need help with ExecAns//NikProgrammer (Read 8545 times)

NikProgrammer

Need help with ExecAns//NikProgrammer

ben_g

Re: Need help with ExecAns//NikProgrammer

chickendude

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer

Runer112

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer

chickendude

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer

chickendude

Re: Need help with ExecAns//NikProgrammer

Xeda112358

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer

chickendude

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer

chickendude

Re: Need help with ExecAns//NikProgrammer

NikProgrammer

Re: Need help with ExecAns//NikProgrammer