tep392

This is technically true, but you put a lot of your own effort into coding the conversions and production this custom cart. It's only fair you should be able to make a little money selling them. Though you would probably make more per hour working at McDonalds. I once calculated how much time I spent programming Donkey Kong XM and how much I made selling the carts. I think it was less than $3/hr. I made more working in a grocery store back in 1984.

I'm not going to go back and read that but I remember what happened. kjmann was selling reproductions without any indication that the were not original. Some people don't care about selling copies of existing games and some do but most agree that that a copy had better be indicated as such. He was selling them on ebay without any indication they weren't original. I just don't like to see people spending their hard earned money on something that isn't what they think it is. Now if you look at his sales of Donkey Kong Arcade, I never had any problem with that because it was his work. My general stance is that when someone supports our old machines by producing software, either original or derived from old originals, they should be given the respect of being asked if they work can be sold or not. Doing otherwise discourages this work. And getting into these discussions is just as discouraging, as we see is the case with Nir. I wasn't referring to you as captain obvious. I was talking about the guy that brought up the legality of the cart in the first place which started this nonsense and led to the cart being taken off sale.

I'm not convinced there is really a double standard. Most people I've seen around here are consistent with their opinion, one way or the other, on these types of products. But the specifics are important and might affect how one reacts to a given situation. If you really want a discussion on why someone might support this cart by Nir by not support kjmann, you would need to specify the kjmann cart. He sold a lot of carts that no one had any problems with.

I think all of this is just arguing for the sake of arguing, and we really have too much of that on this forum already. My opinion is that if you like what Nir is selling, buy it. If you don't, don't buy it. Why the need to argue?

Maybe you should ask those specific people that demonstrated this hypocritical behavior. You can't generalize that we as a group act in this manner when we all have our own individual thoughts and opinions.

It really pisses me off when some Captain Obvious comes in talking about copyright, which has been debated in thousands of posts already, and causes a cool project like this to be discontinued.

There's one on ebay for $9.95 buy it now. You might just verify the label. Title says "computer language" but image of cart is "computer program" variant. He's sold multiple copies, so the photo might not be the one you get. https://www.ebay.com/itm/vintage-Atari-Basic-Computer-Language-Cartridge-CXL4002/222706926610?hash=item33da5e0412:g:hAYAAOSwAaJZ~pwi

I posted fixed versions of my Axlon ramdisk drivers here supporting both 256k and 512k compatible boards. I also hacked the Axlong RAM test program to test 512k. http://atariage.com/forums/topic/256464-designing-an-axlon-compatible-board/page-2?do=findComment&comment=3861693

Cool Label. I never saw the brown one before. The store is currently selling carts with a graphic design on the label. I bought one a year or so ago with the graphic label.

Hope he's ok. Haven't seen any post from him in ages.

I don't think I have a single 3.5in 1.44mb disk that still works, but I can buy Atari software off Ebay that is fully functional.

Mine arrived yesterday. I love the packaging and the quality of the overlays is top notch. Totally professional.

My 800XL came with Rev C. Check your machine before you go thru the effort to swap out roms. This link will tell you how. http://atariage.com/forums/topic/231854-in-search-of-basic-b-cartridge/?do=findComment&comment=3114448

My set has shipped! I would camp out at the mailbox if it wasn't so cold out.

I second De Re Atari for general technical info on how the Atari works. If you are just learning the Atari then this book will give you a good idea how the machine works. You can find it online.

That's interesting. What brand and p/n was the regulator.

You should avoid thinking about the 7800 sprite capability in terms like "how many objects per line". It can be much more than 8 or even less than 8. You should think in terms of how much time does Maria have to draw the objects. Is there character mapped background to draw and how wide is it? If the background is sparse, it might be more efficient to build it with objects. Each object requires some overhead clock cycles plus the time to draw each pixel. How many colors and what width are the objects? Some might be 4 pixels wide while others are 32. So until you layout your screen and define the color depth and width of your objects, you don't really know how many objects per line you can draw. All you know is how many color clocks Maria has to work with. Also, give 7800basic a good look. It is very efficient and handles the display list complexity for you. You can put assembly code in line with your basic code making it very easy to combine the two. Heck, you could use basic only for the graphics and just plunk all your game code in as strait assembly. edit: I made the score line in Donkey Kong PK using objects instead of character graphics. I needed to squeeze in more characters than what was possible in 8 pixel wide chunks. The objects are still defined as 8 pixels wide but they are spaced closer. The black space of the adjacent objects actually overlap. "1UP", "2UP", "HI" and each number are an object, so 21 total on that line. No programming tricks necessary.

If you still want to try the mod, here are the changes to make. The photo is of my A3 unit. 1) remove Q4 - add jumper 2) replace R27 with jumper (next to CR1) 3) remove CR1 4) remove R7(1k) 5) repalce R26 with 470 ohm resistor. R26 is next to the missing R25 in the photo. R25 and C18 are missing in my photo but they don't need to be removed. They get removed from the circuit when Q4 is removed.

It's one of the two transistors next the the crystal. I need to look at my 7800's first to see what other changes they made. I'll take a photo and mark the changes. I might have time to do that tonight.

You need to boot a disk with DOS on it then load LW.EXE from the ATR.

I've made a discovery with my 7800 units that might be relevant. I bought and XBOARD a while back and initially installed it in my "A1 with expansion port" unit. It worked but I had random crashes with some of my homebrews. Beefdrop, which supports the XBOARD POKEY in particular. I moved the XBOARD over to my A3 unit and it has worked perfectly with all carts. I probed around on the two units to see what differences might affect the XBOARD and discovered the clock signal on the glitchy A1 unit had a significantly lower voltage level. Approaching the min hi state most logic chips require. I looked at the clock circuit and there were differences. The A1 unit has two transistors to buffer the clock output. The A3 unit replaced one of the transistors with a zero ohm resistor. I think there were a couple other minor changes but I don't recall the specifics. This could be a factor in compatibility issue with the 7800. It would be very interesting to see what would happen if someone took a malfunctioning unit and modified the clock circuit to give nice clean TTL voltage levels.

Here are the files incorporating the improved much sound and Bob's fixes. pacman5200conv_fixed.zip

The surest way to figure out it's value is to put it up on Ebay.

I've had a saved search on ebay for a while and this is the first one to come up in a while. But I think the price is all about the shrink wrapped box. I don't think an open CIB or incomplete would go for nearly as much.