The Adventurers' Guild

Posted: **Fri Apr 09, 2010 5:17 am**

So...the files that load at 15014 are the dungeon maps, right?

Posted: **Fri Apr 09, 2010 8:56 am**

The files NMa0 to NMaf are dungeon files. They cannot start below NMa0, but can exceed NMaf, as you proved with Mangar level 6. They do not necessarly need to load to the address that is indicated in the file's first 2 bytes. BT tends to load things at different addresses than they were saved from. This is because the used editors might have used a different workspace in memory than the BT engine needs the files at.

Posted: **Tue Apr 13, 2010 8:28 am**

Code: Select all

1b 0c 0d 0e 0b 00 0f 10 1c 1d 1e 11 12 14 13 1f
20 21 22 23 24 25 15 26 27 28 29 2a 2b 2c 2d 2e
2f 16 18 17 30 31 32 33 34 19 35 36 37 38 39 3a
3b 3c 3d 3e 3f 40 41 42 43 44

The above is the table for event files to load. I still don't get it completely.
So are the above NMxx files all the events as listed in that table?

Posted: **Tue Apr 13, 2010 8:39 am**

ZeroZero, can you disassemble a dungeon event where input is needed (for instance, the Old Man in Harkyn's who asks for "VAMPIRE") and publish it? I wish to examine it if you could.

Posted: **Tue Apr 13, 2010 8:53 am**

I think this chart should go into the third post on page 1.

I did a chart that will assist with editing in a dungeon level; specifically locations $002 to $1e5 for dungeon walls/doors etc, and $202 to $3e5 for marking portals/specials/traps/darkness/encounters/stairs and so forth.

Posted: **Tue Apr 13, 2010 9:29 am**

Well....

The chart is here now, thats fine I think. Most programmers won't need it, but for the others it is here as an assisting tool.

The event lookup table is complete. In the map files an offset into this table is given, the resulting loaded event is NM + number from lookup table.

Yes, presently I am disassembling the Guild event, which is the last of the city events. Thereafter I will continue with the dungeon events.

Posted: **Fri Apr 16, 2010 10:27 pm**

updates...

Posted: **Fri Apr 16, 2010 11:25 pm**

ZeroZero wrote:updates...

Posts on page 1 I presume?

I'm at work at the Apple Store in West Edmonton Mall in Edmonton, Alberta. Who knew Macs were so popular?

Posted: **Fri Apr 16, 2010 11:28 pm**

All my posts marked as "Items" have an update date. Check that dates to see if something new is there...

Posted: **Fri Apr 16, 2010 11:32 pm**

ZeroZero, where on the BOOT disk is the jump table for dungeon events found exactly?

Posted: **Sat Apr 17, 2010 12:44 am**

That strongly depends on the boot disk version you have.
It is in a file, that normally is hidden.
I suggest to search the disk in hex edit for some bytes of
the table, you should find it soon.

Posted: **Sat Apr 17, 2010 5:02 pm**

Posted: **Sun Apr 18, 2010 1:27 am**

ZeroZero wrote:That strongly depends on the boot disk version you have.
It is in a file, that normally is hidden.
I suggest to search the disk in hex edit for some bytes of
the table, you should find it soon.

Wait a minute here...if it's been relocated on certain boot disks then that means it can be modified, correct?

Posted: **Mon Apr 19, 2010 12:50 am**

I've located the dungeon events jump table on the BTI boot disk.

It should be found in the file EA3.PRG, at addresses $132B through $1364:

Code: Select all

1b 0c 0d 0e 0b 00 0f 10 1c 1d 1e 11 12 14 13 1f
20 21 22 23 24 25 15 26 27 28 29 2a 2b 2c 2d 2e
2f 16 18 17 30 31 32 33 34 19 35 36 37 38 39 3a
3b 3c 3d 3e 3f 40 41 42 43 44

Now, there is some concern about adding loadable dungeon events to the dungeon disk due to having to extend this table, and doing so might corrupt the game data. However, consider the next three bytes beyond the table ($1365 to $1367):

Code: Select all

1A 8D 1B

There is no NM1A.PRG, NM8D.PRG, or NM1B.PRG on the dungeon disk, meaning at least three more events can be safely put on the disk.

Thoughts?

Posted: **Mon Apr 19, 2010 8:24 am**

The whole text-offset is incorrect. It appears to be completely random.

The Adventurers' Guild

CBM64 Bard's Tale 1 Disassembly