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Acelgoyobis Released
Posted by Michael on 5 November 2004, 02:56 GMT

[Acelgoyobis]Its name might be unpronounceable to most of us, but Acelgoyobis is the first pinball game for Z80 calculators. It was a few years ago that I first read complaints about the lack of such a game. At long last, we can rest our minds: Acelgoyobis is available for three different 82 shells, the 83 (ION & Venus), and the 83+ (ION/MirageOS). As for the gameplay, it's pinball. Awesome pinball with an included level editor. You might even learn a little Hungarian from downloading this.

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Re: Acelgoyobis Released
Travis Supalla  Account Info

I have all the levels unarchived and they work fine...no resetting or anything! Hmmmm...

Reply to this comment    6 November 2004, 23:36 GMT


Re: Re: Acelgoyobis Released
Andree Chea  Account Info

This problem has only been happening on the 83+SE. The 83+ and 84+/SE should work (or they have been working)...

Reply to this comment    8 November 2004, 04:03 GMT


Re: Re: Re: Acelgoyobis Released
Benjamin Moody  Account Info

I doubt this is the case (see below...)

Reply to this comment    8 November 2004, 05:22 GMT

Re: Acelgoyobis Released
JcN  Account Info
(Web Page)

Very, very impressive; much better than my own. I could play this all day!

Reply to this comment    7 November 2004, 18:46 GMT

Re: Acelgoyobis Released
Andree Chea  Account Info

How about some high scores?

Reply to this comment    8 November 2004, 04:05 GMT


Re: Re: Acelgoyobis Released
Derrick F.  Account Info

It does have a highscore feature or are you asking for our highscores?

Reply to this comment    9 November 2004, 23:16 GMT


Re: Re: Re: Acelgoyobis Released
Andree Chea  Account Info

Yes, what are your high scores? So far, my highest is 24112 in Gaia (and I can back that up with a screenie) But it is subject to change ... :)

Reply to this comment    11 November 2004, 03:29 GMT


¤
burntfuse  Account Info

Ha! 61090 in Gaia for me! :-)

Reply to this comment    11 November 2004, 22:16 GMT

Re: Acelgoyobis Released
Benjamin Moody  Account Info

Thanks to TilEm's new tracing and symbol loading capabilities... :) </plug>

I've located the bug that causes it to crash under low-RAM conditions on the 83/83+. Under certain conditions, it will try to decompress the table data into free RAM when there is in fact far too little free RAM available. The result is massive stack corruption.

Here's the problematic bit of code (PINBALL.asm line 143; conditional on 83/83+)

ld de,(MEMEND) ; Checking free memory before doing anything (83 and 83+)
ld hl,(MEMSTART)
ld bc,MEMUSED
add hl,bc
sbc hl,de
ret nc ; Exit if there isn't enough memory

Anyone see a problem with it? I didn't at first. The problem is that if (MEMSTART) + MEMUSED is greater than the end of memory, the 'add hl,bc' carries... and the result is still less than (MEMEND). So just throw a 'ret c' in there after the 'add hl,bc'. And it works.

As to why some people were seeing it and some weren't? I'd guess because some people were impatient enough to load all four table files, and some weren't.

Reply to this comment    8 November 2004, 05:21 GMT

Re: Re: Acelgoyobis Released
Gergely Patai  Account Info
(Web Page)

Yes, it's a very stupid mistake. I also tested it with all four tables present, but apparently the memory wasn't low enough, so it quit nicely. Thanks for spotting it, update coming. The power of open source! :)

Reply to this comment    8 November 2004, 05:40 GMT

Re: Re: Re: Acelgoyobis Released
Durk Kingma Account Info
(Web Page)

Given enough eyeballs, all bugs are shallow!

Reply to this comment    8 November 2004, 11:18 GMT


Re: Re: Re: Re: Acelgoyobis Released
calkfreak83  Account Info
(Web Page)

Ok... can somebody figure out how to make it mirageos compatible????

Reply to this comment    9 November 2004, 01:02 GMT


Re: Re: Re: Re: Re: Acelgoyobis Released
Benjamin Moody  Account Info

In what way isn't it compatible with Mirage?

Reply to this comment    9 November 2004, 01:16 GMT

Re: Re: Re: Re: Re: Re: Acelgoyobis Released
calkfreak83  Account Info
(Web Page)

MirageOS Doesn't even "see" the file (It doesn't come up in the list of programs...

Reply to this comment    9 November 2004, 22:08 GMT


¤
burntfuse  Account Info

It does for me...

Reply to this comment    10 November 2004, 21:48 GMT


Duh......
calkfreak83  Account Info
(Web Page)

OH MY GOD... I didn't scroll all the way down... It was at the bottom instead of with the rest of my "P" games. My bad.

(: Laughs at how common sense is not present in my head :)

Reply to this comment    11 November 2004, 00:49 GMT


Re: Re: Re: Re: Re: Re: Acelgoyobis Released
Matt Gardeski  Account Info

This is a great game, very fast on my 84+ (yikes!), best physics of any pinball i have played (other than real pinball, and it works fine with one or two tables in the ram with Ion. It works in MirageOS on my calculator, but sometimes it crashes. I don't get this problem in Ion.
I usually have over 10,000 bytes of ram free before i run
Ion.
By the way, I made a table that works fine the first time you try it, but if the ball gets stuck somewhere, and you push 2ND to quit, why does the program quit right after you start if you try the table again? ?? I have to delete it and load it again to play it!! Shoule I just fix my table?

Reply to this comment    9 November 2004, 22:10 GMT

Re: Re: Re: Re: Re: Re: Re: Acelgoyobis Released
Toobasic  Account Info

Fast for the 84+? Yes. But faster on the 83+. All ASM programs are faster on the 83+ then the 84+. I ran multiple ASM games side by side on both calcs and found the 83+ to be actually alot faster, by at least 6 pixels a sec. The 84+ just runs basic programs faster.

Reply to this comment    10 November 2004, 02:13 GMT


Re: Re: Re: Re: Re: Re: Re: Acelgoyobis Released
Gergely Patai  Account Info
(Web Page)

There are safeguards in the program to make a clean quit if it encounters an unrecoverable error. I've never seen this in action after every event was coded. You could also send me the xagt source of the table causing the error, maybe I can spot something.

Reply to this comment    10 November 2004, 06:46 GMT


Re: Re: Re: Re: Re: Re: Re: Re: Acelgoyobis Released
Matt Gardeski  Account Info

OK. I can't get it to crash anymore. It works fine on MirageOS.
I think it's fast, but i don't have a 83+ to compare it to.

Reply to this comment    17 November 2004, 20:34 GMT


Re: Re: Re: Acelgoyobis Released
Chivo  Account Info

Speaking of open source, what is the license for this game?

Reply to this comment    9 November 2004, 20:27 GMT


Re: Re: Re: Re: Acelgoyobis Released
Gergely Patai  Account Info
(Web Page)

It's in the public domain.

Reply to this comment    9 November 2004, 22:10 GMT


¤
burntfuse  Account Info

Hmmm...how would MEMUSED+(MEMSTART) ever be larger than $FFFF? (unless one of them got corrupted by a buggy program)

Reply to this comment    10 November 2004, 21:50 GMT

Re: ¤
calkfreak83  Account Info
(Web Page)

If my guess is right, MEMEND is not always $FFFF. It is only the RAM of the calculator which can be way lower than $FFFF...

Just a guess???

Reply to this comment    11 November 2004, 00:51 GMT

Re: ¤
Benjamin Moody  Account Info

(MEMSTART) is the beginning of free RAM, which can potentially be as high as $FE66 if you have no variables. Well, actually, if it were that high, TIOS would crash because you'd be missing a lot of variables that aren't supposed to be deleted... not to mention the question of exactly what is taking up 24k of RAM if not a variable... but that's not the point. The point is that (MEMSTART) can easily be greater than $ED00.

Reply to this comment    11 November 2004, 05:46 GMT


Re: Re: ¤
Gergely Patai  Account Info
(Web Page)

And MEMUSED is a constant ($1300) set by me. A table needs 3840 ($f00) bytes for the slope information (which is stored in a compressed form in the file) and the rest (1k) is reserved for the data of the interactive elements. The editor doesn't let you export a table if the overall size of the gadgets surpasses the 1k limit.

Reply to this comment    11 November 2004, 06:34 GMT


¤
burntfuse  Account Info

Sorry for my stupidity. For some strange reason, I had been thinking that MEMUSED was the total amount of used RAM (*bangs head against wall*)...

Reply to this comment    11 November 2004, 22:19 GMT

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