ARM Assembler Help Requested...

[Bill Zimmerly]

I copied the listing from this post...

Re: confused about ARM

...and made the modification to Claudio Lapilli's code suggested by Cyrille de Brébisson.

The problem is, every time I put it on the stack and execute the ASM command, it aborts with "asm Error: Invalid File".

(Note: it ends with <CR><CR>@ as it should AND it fails like this whether I use either of the ASM or asm commands.)

Does anyone see anything wrong with the listing?

[BruceH]

I think it should end <nl>@ not <cr>

[Bill Zimmerly]

Quote:

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I think it should end <nl>@ not <cr>

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Hi Bruce!

Either way, the code I meant was produced on the HP-50G with the Right-Shift-Period key combination. ;)

[cyrille de Brébisson]

hello,

can you post the exact string that you are trying to compile?

cyrille

[Bill Zimmerly]

Hi Cyrille!

Here is the exact string:

"CODE

% SMALL ARM LAUNCHER

SAVE

GOSUB SKIPCODE

% INSERT ARM CODE HERE

!ARM

% TEST CODE - RETURN ONLY

MOV PC,LR

!ASM

*SKIPCODE

A=PC

A=A-4.A

C=RSTK

ACEX.A

D0=C % END OF BLOCK

C=C-A.A % NIBBLES TO COPY

D1=(2) 0 % ALIGN

MOVEUP

CD1EX

ARMSAT

LOADRPL

ENDCODE

@"

(Everything between the double-quote marks.)

Also, Cyrille, do you know of any ARM code more advanced than the simple examples presented in the AUR Manual? I would really like to know how to do I/O with the keyboard, display, and serial port with ARM code - but haven't been able to find anything at all on this.

- Bill

[Han]

CODE ... ENDCODE is a SysRPL object. Perhaps you need to incude:

!NO CODE

!RPL

Either include that at the top of your source code, or make sure to have flag -92 set (so that MASD assumes SysRPL mode). The other possibility is to remove 'CODE' and 'ENDCODE'

Han

Edited: 13 May 2010, 10:12 p.m.

[Bill Zimmerly]

Quote:

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CODE ... ENDCODE is a SysRPL object. Perhaps you need to incude:

!NO CODE

!RPL

Either include that at the top of your source code, or make sure to have flag -92 set (so that MASD assumes SysRPL mode). The other possibility is to remove 'CODE' and 'ENDCODE'

Han

---

Hi Han!

Per your instructions, I did each of those steps and still got the same error each time. :( It's very puzzling...

[BruceH]

Hi Bill,

This code that you have posted works just fine for me provided flag -92 is set. If not then it gives the invalid file error that you have been seeing.

In case there is something else, my flags are:
{ # 205010FF0h # 0h # 801000000A000000h # 0h }

Version HP50-C Revision #2,08

[Bill Zimmerly]

BruceH and Han,

It works now when I set flag -92. Thanks for your help!

(Han - I don't know why it didn't work before when I was doing what you said to do, but I re-entered the program, set flag -92 and it assembled to a "Code" object. Possibly a character I didn't see?)

Anyway - it works and I'm grateful for everyone's help. :)

Sincerely,
- Bill

Quote:

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Bill,

Rather than coding in ARM assembly, consider coding in C with HPGCC instead. This will compile into native ARM code and it's really fast. Libraries let you access the keyboard and display, though I'm not sure about the serial port.

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Hi David!

Since my goal is to port my ARM zForth system to the HP50G, I prefer to stick to ARM assembler exclusively. But I do agree with what you wrote about HPGCC - it's fast and quite useful! ;)

- Bill

[David Hayden]

Bill,

Rather than coding in ARM assembly, consider coding in C with HPGCC instead. This will compile into native ARM code and it's really fast. Libraries let you access the keyboard and display, though I'm not sure about the serial port.

[Bill Zimmerly]

Quote:

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Also, Cyrille, do you know of any ARM code more advanced than the simple examples presented in the AUR Manual? I would really like to know how to do I/O with the keyboard, display, and serial port with ARM code - but haven't been able to find anything at all on this.

---

I don't know why I missed this before, but the HPGCC source modules have a lot of good stuff to study in there. Cool!