Jump to content
dhe

Blast from the past - Arcturus

Recommended Posts

Nice bit of background data exchange on how GROM bases work too. It is unfortunate that the actual (original) Arcturus cartridges are so hard to find. I like the cartridge shells they used--and those cases could be used with somewhat different circuit cards as regular cartridge slot cases as well, so they were nicely multifunctional. I may have to open mine one of these days and see if I can make a mold set for the cases. . .and the Killer Caterpillar cartridges in the same shells are even harder to find.

  • Like 1

Share this post


Link to post
Share on other sites

I have a miner 2049'er - that's a side port 'cart'.

I opened it up once and was surprised... It was the first time I'd seen surface mount tech used on a TI.

It appeared to me, it had one square chip under a blob of black resin...

 

 

Share this post


Link to post
Share on other sites

Several TI carts used the blobs. Miner 2049er, Espial, St. Nick, and even some experimental The Attack cartridges from TI.

  • Like 1

Share this post


Link to post
Share on other sites

On that occasion, if some of you have original dumps of the sidecar games, I'd be interested in a copy for MAME. Most dumps are more or less patched to run as a normal cartridge.

  • Like 1

Share this post


Link to post
Share on other sites

I always wondered how people copied them out... I usually used JP Hoddies CSAVE on a TI with a PBOX connected to the side... Yea.. that side, that now has a module plugged in to it! 😃

 

Also, during the development of PC99, 2049er was one of those cartridges that challenged the emulator.  It was doing weird things with Sprites. Mark Van Coppenolle - spent a lot of time trying to figure out what it was doing, but in the end I think he called it a day and just changed a few bytes in the dump to make it work 100%. Not to different then the patching Mike Maksimik did to a lot of carts to make them run on the Geneve.

Share this post


Link to post
Share on other sites
21 hours ago, dhe said:

I always wondered how people copied them out... I usually used JP Hoddies CSAVE on a TI with a PBOX connected to the side... Yea.. that side, that now has a module plugged in to it! 😃

 

Also, during the development of PC99, 2049er was one of those cartridges that challenged the emulator.  It was doing weird things with Sprites. Mark Van Coppenolle - spent a lot of time trying to figure out what it was doing, but in the end I think he called it a day and just changed a few bytes in the dump to make it work 100%. Not to different then the patching Mike Maksimik did to a lot of carts to make them run on the Geneve.

I dug into 2049er a fair bit when the F18A was being developed, and found there's a bug in the collision detection code. Not sure what the challenge in PC99 was, but we were trying to figure out why sprite collisions didn't occur. It turns out the game logic uses the sprite collision bit to determine whether to run the collision code. So, when the bit shows a collision, then it runs through all the objects to see what collided.

 

The problem is, instead of sprite collision >20, the code checks >02, which is the "5th sprite" counter. When there are not five sprites on a line, these bits act as a counter and change continuously... so basically, at random points the code finds bit >02 set and checks for collisions between objects, and the game works. But if this counting isn't implemented, then no collisions ever happen.

 

That's the only oddity in there I'm aware of though.

 

  • Like 1
  • Thanks 2

Share this post


Link to post
Share on other sites
On 11/21/2021 at 5:11 PM, Ksarul said:

Several TI carts used the blobs. Miner 2049er, Espial, St. Nick, and even some experimental The Attack cartridges from TI.

I own a TI Mind Challengers cartridge embedding (four) blobs too.

  • Like 2

Share this post


Link to post
Share on other sites
On 11/21/2021 at 1:41 PM, dhe said:

I always wondered how people copied them out... I usually used JP Hoddies CSAVE on a TI with a PBOX connected to the side... Yea.. that side, that now has a module plugged in to it! 😃

 

Someone (name withheld) in the Lubbock TI users group bought Miner 2049'er, and dumped it with Mini Memory, BASIC support routines like PEEK, and the cassette port. He was in the introduction to assembly language class I taught (overconfident 14 yr old me) and, went on to write tools in assembly, but I haven't heard of them since. 

 

 

  • Like 3
  • Thanks 2
  • Sad 1

Share this post


Link to post
Share on other sites
On 11/23/2021 at 9:35 PM, FarmerPotato said:

Someone (name withheld) in the Lubbock TI users group bought Miner 2049'er, and dumped it with Mini Memory, BASIC support routines like PEEK, and the cassette port. He was in the introduction to assembly language class I taught (overconfident 14 yr old me) and, went on to write tools in assembly, but I haven't heard of them since. 

 

 

I too attended one of your classes, but was pulled out when I got orders to go to Iceland..dang it was awesome for the little time I had. 

  • Like 2

Share this post


Link to post
Share on other sites
4 hours ago, GDMike said:

I too attended one of your classes, but was pulled out when I got orders to go to Iceland..dang it was awesome for the little time I had. 

Wait, what? you were in Lubbock?

  • Haha 1

Share this post


Link to post
Share on other sites
Just now, FarmerPotato said:

Wait, what? you were in Lubbock?

No but I think you visited las Vegas, unless I've got you confused with someone else.. could be

Share this post


Link to post
Share on other sites
28 minutes ago, GDMike said:

No but I think you visited las Vegas, unless I've got you confused with someone else.. could be

No that's not me.

  • Haha 1

Share this post


Link to post
Share on other sites

Well you gotta twin. Damn. Haha...

Well, I'm not sure who it was, but someone came out to the group at TISNUG and started teaching us all about assy. And the fella was like 18 or so...hmmm

Edited by GDMike

Share this post


Link to post
Share on other sites
6 minutes ago, GDMike said:

Well you gotta twin. Damn. Haha...

Well, I'm not sure who it was, but someone came out to the group at TISNUG and started teaching us all about assy. And the fella was like 18 or so...hmmm

 It was 1984. Was there a Fest-West in Vegas?

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...