Danish Amiga Assembly Programming Course - Page 3

Lonewolf10 · 01 October 2010, 21:09

Quote:

Originally Posted by StingRay

Just use dcb.l 10240,$80 instead of blk.

(d.efine c.onstant b.lock)

Thanks. BTW, I think you mean dcb.b 10240,$80

Edit: Sorry, StringRay. I just saw I made the mistake a few messages back, doh!

Regards,
Lonewolf10

Lonewolf10 · 02 October 2010, 18:02

For anyone doing this course and is not using K-Seka, to add the appropriate files (e.g. "SCREEN" and "MOVETABLE" for program MC0502.s) you will need to use the include commands - INCDIR (INCludes DIRectory) and INCBIN (INClude BINary).

Example for the movetable in MC0502.s:

Code:

movetable:
*   blk.l  3100,0

    INCBIN "MOVETABLE"

Make sure the include commands are indented or you may get a malformed line error (Devpac, or whatever you are using, may interpret INCBIN as a label and the string that follows it causes the error message).
Also, INCDIR must be at the start of the program (to avoid confusion), whereas the INCBIN commands must be placed where you want the included file to be placed. In the above example the file "MOVETABLE" will be added at the location movetable: points to.
I have commented out (added the asterisk) before the blk.l instruction as it is not needed when including the "MOVETABLE" file.

Oh, my dutch is rusty... what does "Brevkurs" translate to? (bravo?)

Regards,
Lonewolf10

Leffmann · 02 October 2010, 20:06

Quote:

Originally Posted by Lonewolf10

I know about chip and fast memory, but public memory always confuses me.

Allocating public memory means the AmigaOS will first check for fastmem and slowmem, then chipmem.

Brevkurs is Swedish actually, it means mail/letter course.

Toni Wilen · 02 October 2010, 20:18

MEMF_PUBLIC was supposed to mean memory that is always available (not paged or swapped or something similar) but it was some future plan that never happened and no one used MEMF_PUBLIC flag properly..

You always get FAST first (if available) as long as you don't request CHIP RAM. MEMF_PUBLIC does not matter.

Leffmann · 02 October 2010, 20:45

But in the context of Amiga assemblers it's important to know that f.ex section something, code_p is what you have to specify to use this allocation scheme, while code_f will require fastmem or slowmem.

StingRay · 02 October 2010, 20:55

Quote:

Originally Posted by Leffmann

But in the context of Amiga assemblers it's important to know that f.ex section something, code_p is what you have to specify to use this allocation scheme, while code_f will require fastmem or slowmem.

Section code,code is enough as it'll allocate fast/public mem if available, otherwise chipmem. The _P extension is not required.

Lonewolf10 · 02 October 2010, 21:02

Quote:

Originally Posted by Leffmann

Allocating public memory means the AmigaOS will first check for fastmem and slowmem, then chipmem.

Ok.

Quote:

Originally Posted by Leffmann

Brevkurs is Swedish actually, it means mail/letter course.

What's a Swedish word doing in a Danish course?!! Thanks for the translation

Another note to anyone doing the course, alot of the example programs end up giving the workbench error message (Returned errorcode X), where X is the current value of d0. To avoid this simply type...

Code:

    moveq   #0,d0

...before the RTS instruction that exits back to workbench.

Regards,
Lonewolf10

Leffmann · 02 October 2010, 21:57

Quote:

Originally Posted by Lonewolf10

What's a Swedish word doing in a Danish course?!! Thanks for the translation

No idea why, or why you thought it was Dutch for that matter

The Danish word for it is "brevkursus". Probably just a typo.

Quote:

Originally Posted by Lonewolf10

Another note to anyone doing the course, alot of the example programs end up giving the workbench error message (Returned errorcode X), where X is the current value of d0. To avoid this simply type...

Code:

moveq   #0,d0

If you ever try the boring part of Amiga programming, utilities and command line tools, then the Amiga also accepts return values of 5 to indicate a warning, 10 for an error and 20 for a critical error or failure, to aid in debugging.

Lonewolf10 · 03 October 2010, 00:56

Quote:

Originally Posted by Leffmann

No idea why, or why you thought it was Dutch for that matter

The Danish word for it is "brevkursus". Probably just a typo.

I have realised why... it's used because they needed an 8 letter word to help demonstrate sprite movement (one letter per sprite).

Quote:

Originally Posted by Leffmann

If you ever try the boring part of Amiga programming, utilities and command line tools, then the Amiga also accepts return values of 5 to indicate a warning, 10 for an error and 20 for a critical error or failure, to aid in debugging.

Well it seems that workbench accepts any value (0 to 65535) returned in d0. Of course, it's best to stick with normal error values for debugging purposes

Regards,
Lonewolf10

AlfaRomeo · 08 October 2010, 12:27

When I was typing an asm tutorial a required memory space for a copper list has to be calculated by subtracting the start copperlist label by the end copper list label:

Code:

CLstart:
            ...
            copper list
            ...
CLend:

but devpac 3.18 says that

Code:

CLsize = CLstart - CLend

it´s an instruction not recognized

I do not found anything about this in devpac´s manual

Does anyone know how do I can bypass this in devpac?

StingRay · 08 October 2010, 12:50

Quote:

Originally Posted by AlfaRomeo

but devpac 3.18 says that

Code:

CLsize = CLstart - CLend

it´s an instruction not recognized

I do not found anything about this in devpac´s manual

Does anyone know how do I can bypass this in devpac?

Where did you place that very line? Before or after the label CLend? Also, remove the spaces in your calculation, i.e.:
CLsize = CLend-CLstart.

If nothing helps, try to change it to CLsize = *-CLstart and place it right after the CLend label.

AlfaRomeo · 08 October 2010, 14:18

@StingRay
Thanks for the help.

Quote:

Originally Posted by StingRay

Where did you place that very line? Before or after the label CLend?

This line is placed after CLend label.

I did already tried your tips but none seems to work

I will think on other options on how to calculate the memory size of copperlist

StingRay · 08 October 2010, 14:30

Quote:

Originally Posted by AlfaRomeo

@StingRay
Thanks for the help.

You're welcome.

Quote:

Originally Posted by AlfaRomeo

This line is placed after CLend label.

I did already tried your tips but none seems to work

I will think on other options on how to calculate the memory size of copperlist

What's the exact error message you get from Devpac? Also, did you correct the order (CLend-CLstart instead of your wrong CLstart-CLend)?

AlfaRomeo · 08 October 2010, 14:50

You´re right StingRay..

As I´m at work and had tried your tips very quickly, I do it in the wrong way..

When I corrected CLend - CLstart by CLstart-CLend and without spaces all worked ok.
thanks very much.

Popstar · 30 November 2010, 15:46

Quote:

Originally Posted by Herpes

I dared to make a translation of the 12 chapters of the Danish Amiga course.

...

Regards, HPS

Hi, Laust Palbo Nielsen here.

Just wanted to see where all the traffic on my page was coming from

and I stumbled upon your post.

If you don't mind, I would like to put your english version up on my site as well.

Cheers
Laust

Herpes · 05 December 2010, 17:07

Quote:

Originally Posted by Popstar

Hi, Laust Palbo Nielsen here.
Just wanted to see where all the traffic on my page was coming from

and I stumbled upon your post.

If you don't mind, I would like to put your english version up on my site as well.

Cheers
Laust

Hi Laust!
You are very welcome to put it on your page - since it's your stuff anyway

Cheers!

Popstar · 06 December 2010, 10:46

I salute you, and the translations are now on my page:
http://palbo.dk/dataskolen/maskinsprog

BTW: I hope your leg healed up nicely.

Lonewolf10 · 06 December 2010, 18:31

A big thank you to both of you (Herpes and Popstar), this tutorial helped clear up a few things I didn't understand and has now led to me starting my own demo (hoped to be finished around March 2011).

Regards,
Lonewolf10

jman · 06 December 2010, 21:08

Quote:

Originally Posted by Lonewolf10

A big thank you to both of you (Herpes and Popstar)...

I'd like to thank Herpes and Popstar too.
Now that the tutorial has been translated I could finally give a glance to the summary and it looks a really useful tool for my ASM training.

Many people will probably be grateful for this effort because there are not so many resources of this kind around.

Good work!

p.s. I'm also curious about the graphic vector document; I could post at some point a reformatted rough google-translation of that document and see if the magic happens again ;-) There seems to be some interesting math in there...

Antonio

31 May 2014, 08:54

Great work you guys! I just discovered all twelve old letters from the danish mail course back in 1989. They were originally printed on red paper, back in the days, a little hack that ensured that photocopies would come out totally black!

Ok, so I got a hit of nostalgia, and since I never completed this stuff back then, (I guess I was to busy gaming) I thought that now, would be a good time to do it!! Anyways, thanks for keeping it alive!

02 October 2010, 18:02	#42
Lonewolf10 AMOS Extensions Developer Join Date: Jun 2007 Location: near Cambridge, UK Age: 44 Posts: 1,924	For anyone doing this course and is not using K-Seka, to add the appropriate files (e.g. "SCREEN" and "MOVETABLE" for program MC0502.s) you will need to use the include commands - INCDIR (INCludes DIRectory) and INCBIN (INClude BINary). Example for the movetable in MC0502.s: Code: movetable: * blk.l 3100,0 INCBIN "MOVETABLE" Make sure the include commands are indented or you may get a malformed line error (Devpac, or whatever you are using, may interpret INCBIN as a label and the string that follows it causes the error message). Also, INCDIR must be at the start of the program (to avoid confusion), whereas the INCBIN commands must be placed where you want the included file to be placed. In the above example the file "MOVETABLE" will be added at the location movetable: points to. I have commented out (added the asterisk) before the blk.l instruction as it is not needed when including the "MOVETABLE" file. Oh, my dutch is rusty... what does "Brevkurs" translate to? (bravo?) Regards, Lonewolf10

08 October 2010, 12:27	#50
AlfaRomeo A1200 040 SAM440EP 667 Join Date: Jan 2008 Location: Lisbon / Portugal Posts: 873	When I was typing an asm tutorial a required memory space for a copper list has to be calculated by subtracting the start copperlist label by the end copper list label: Code: CLstart: ... copper list ... CLend: but devpac 3.18 says that Code: CLsize = CLstart - CLend it´s an instruction not recognized I do not found anything about this in devpac´s manual Does anyone know how do I can bypass this in devpac?

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02 October 2010, 20:18	#44
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	MEMF_PUBLIC was supposed to mean memory that is always available (not paged or swapped or something similar) but it was some future plan that never happened and no one used MEMF_PUBLIC flag properly.. You always get FAST first (if available) as long as you don't request CHIP RAM. MEMF_PUBLIC does not matter.

02 October 2010, 20:45	#45
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	But in the context of Amiga assemblers it's important to know that f.ex section something, code_p is what you have to specify to use this allocation scheme, while code_f will require fastmem or slowmem.

08 October 2010, 14:50	#54
AlfaRomeo A1200 040 SAM440EP 667 Join Date: Jan 2008 Location: Lisbon / Portugal Posts: 873	You´re right StingRay.. As I´m at work and had tried your tips very quickly, I do it in the wrong way.. When I corrected CLend - CLstart by CLstart-CLend and without spaces all worked ok. thanks very much.

06 December 2010, 10:46	#57
Popstar Deluxe Painter Join Date: Mar 2008 Location: Copenhagen / Denmark Age: 49 Posts: 61	I salute you, and the translations are now on my page: http://palbo.dk/dataskolen/maskinsprog BTW: I hope your leg healed up nicely.

06 December 2010, 18:31	#58
Lonewolf10 AMOS Extensions Developer Join Date: Jun 2007 Location: near Cambridge, UK Age: 44 Posts: 1,924	A big thank you to both of you (Herpes and Popstar), this tutorial helped clear up a few things I didn't understand and has now led to me starting my own demo (hoped to be finished around March 2011). Regards, Lonewolf10

31 May 2014, 08:54	#60
Markowitch Posts: n/a	Great work you guys! I just discovered all twelve old letters from the danish mail course back in 1989. They were originally printed on red paper, back in the days, a little hack that ensured that photocopies would come out totally black! Ok, so I got a hit of nostalgia, and since I never completed this stuff back then, (I guess I was to busy gaming) I thought that now, would be a good time to do it!! Anyways, thanks for keeping it alive!

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