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Author Topic: Mistakes made in the ASM tutorials  (Read 36179 times)

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Offline calcdude84se

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Re: Mistakes made in the ASM tutorials
« Reply #15 on: May 16, 2010, 08:04:22 am »
I doubt it... The OS architecture has remained essentially the same throughout its versions.
The only possibly new bcalls (which may not be in any standard include file, not to mention the 84+ series is over a year old anyway) are 84+(SE) specific ones, which wouldn't be covered by Hot_Dog's tutorial for a long time.
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Offline Hot_Dog

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Re: Mistakes made in the ASM tutorials
« Reply #16 on: June 23, 2010, 02:14:20 pm »
In lesson 9, on page 12, I had the following text in bold:

Whenever you see a function that has a parameter
of a one-byte value, you can also use (HL) inside that parameter.

That was a mistake.  Instead of "one-byte value", it should be "one-byte register."
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Offline mapar007

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Re: Mistakes made in the ASM tutorials
« Reply #17 on: June 25, 2010, 05:41:16 am »
I think you should say somewhere that IX and HL are always mutually exclusive. There is no instruction that can take HL and IX as its arguments.  (so you can't do add hl,ix)
« Last Edit: June 25, 2010, 05:41:37 am by mapar007 »
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Offline Hot_Dog

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Re: Mistakes made in the ASM tutorials
« Reply #18 on: June 25, 2010, 10:43:28 am »
Quote from: mapar007 on June 25, 2010, 05:41:16 am
I think you should say somewhere that IX and HL are always mutually exclusive. There is no instruction that can take HL and IX as its arguments.  (so you can't do add hl,ix)

Certainly, although so far, I haven't told the reader what IX is  8)
« Last Edit: June 25, 2010, 11:17:36 am by Hot_Dog »
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Offline calc84maniac

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Re: Mistakes made in the ASM tutorials
« Reply #19 on: June 25, 2010, 11:06:50 am »
Quote from: mapar007 on June 25, 2010, 05:41:16 am
I think you should say somewhere that IX and HL are always mutually exclusive. There is no instruction that can take HL and IX as its arguments.  (so you can't do add hl,ix)
Well, actually, the major exception (which I didn't realize for quite a while) was that the "ld h,(ix+n)", "ld l,(ix+n)", "ld (ix+n),h" and "ld (ix+n),l" instructions are actually quite valid.
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Offline tr1p1ea

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Re: Mistakes made in the ASM tutorials
« Reply #20 on: June 25, 2010, 12:25:33 pm »
Along with operations on ixl/ixh & iyl/iyh.
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Offline DJ Omnimaga

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Re: Mistakes made in the ASM tutorials
« Reply #21 on: June 25, 2010, 05:37:52 pm »
By the way, I haven't got time to check the tutorials yet, but are you planning to have a section specifically for stuff that is not compatible with the TI-Nspire, discouraging their usage unless absolutely needed (for speed, for example)?
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Offline ztrumpet

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Re: Mistakes made in the ASM tutorials
« Reply #22 on: June 25, 2010, 05:40:35 pm »
Quote from: DJ Omnimaga on June 25, 2010, 05:37:52 pm
By the way, I haven't got time to check the tutorials yet, but are you planning to have a section specifically for stuff that is not compatible with the TI-Nspire, discouraging their usage unless absolutely needed (for speed, for example)?
Actually I don't think he's going to describe undocumented instructions (unless they are in an appendix). :)
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Offline DJ Omnimaga

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Re: Mistakes made in the ASM tutorials
« Reply #23 on: June 25, 2010, 05:42:22 pm »
Aaah ok. Well, if he ever do any doc on them, he should probably warn that those will not work on the Nspire.
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Offline Hot_Dog

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Re: Mistakes made in the ASM tutorials
« Reply #24 on: June 25, 2010, 07:09:24 pm »
Quote from: DJ Omnimaga on June 25, 2010, 05:42:22 pm
Aaah ok. Well, if he ever do any doc on them, he should probably warn that those will not work on the Nspire.

I think I'll put them in an appendix.  Thanks, btw, I'll be sure to warn about Nspire compatability.
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Offline ralphdspam

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Re: Mistakes made in the ASM tutorials
« Reply #25 on: March 06, 2011, 03:49:29 pm »
Quote from: Lesson 6 Page 9
Main_Menu .equ 0
Settings_Menu .equ1
Players_Menu .equ 2
Names_Menu .equ 3
Main_Menu_Items .equ 4
Settings_Menu_Items .equ 3
Players_Menu_Items .equ Settings_Menu_Items
Names_Menu_Items .equ Player_Menu_Items
Should be:
Code: [Select]
Names_Menu_Items .equ Players_Menu_Items
(I think)
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ld a, 0
ld a, a

souvik1997

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Re: Mistakes made in the ASM tutorials
« Reply #26 on: March 06, 2011, 03:55:29 pm »
Also, .org 40339 should be changed to .org $9D93, because RAM addresses are generally expressed in hexadecimal.
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Offline Hot_Dog

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Re: Mistakes made in the ASM tutorials
« Reply #27 on: March 06, 2011, 04:14:18 pm »
Quote from: ralphdspam on March 06, 2011, 03:49:29 pm
Quote from: Lesson 6 Page 9
Main_Menu .equ 0
Settings_Menu .equ1
Players_Menu .equ 2
Names_Menu .equ 3
Main_Menu_Items .equ 4
Settings_Menu_Items .equ 3
Players_Menu_Items .equ Settings_Menu_Items
Names_Menu_Items .equ Player_Menu_Items
Should be:
Code: [Select]
Names_Menu_Items .equ Players_Menu_Items
(I think)


Yeah, I think you're right

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Offline ralphdspam

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Re: Mistakes made in the ASM tutorials
« Reply #28 on: March 06, 2011, 05:22:17 pm »
Quote from: souvik1997 on March 06, 2011, 03:55:29 pm
Also, .org 40339 should be changed to .org $9D93, because RAM addresses are generally expressed in hexadecimal.
... You might want to see this
http://ourl.ca/9514
« Last Edit: March 06, 2011, 05:24:39 pm by ralphdspam »
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ld a, 0
ld a, a

Offline Hot_Dog

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Re: Mistakes made in the ASM tutorials
« Reply #29 on: March 06, 2011, 05:24:41 pm »
Quote from: ralphdspam on March 06, 2011, 05:22:17 pm
Quote from: souvik1997 on March 06, 2011, 03:55:29 pm
Also, .org 40339 should be changed to .org $9D93, because RAM addresses are generally expressed in hexadecimal.
Um... you might want to see this
http://ourl.ca/9514

Don't worry about it Ralphdspam.  The topic wasn't up at that time.
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