Atari Jaguar in FPGA

[Atari Jaguar in FPGA]

Hi,

There is no way that it could be ported to the MiST.

Aside from the FPGA capacity, the main issue would be the 64-bit data bus.

The board I used for this purpose is a decade old Stratix-II evaluation board found by chance on eBay, coupled to a custom daughter board for VGA output.

The main advantage of this board is that it features a 32-bit SSRAM, which was convenient.

 

Starting from the original netlists guarantee that Tom and Jerry chips are 100% exact. However, the remaining parts may not be so accurate. But it should be quite easy to fix, especially by someone that knows the machine, like SCPCD.

Now, it would be nice to find a board that features all the required parts (maybe a DSP-oriented FPGA board), and cross fingers for the price tag.

Regards

[Potential new hardware]

-The incomplete Torlus consoles (FPGAGen, PC Engine) wich lack roms-on-sd and a selector.

My bad. In fact I've added a rough SD-card interface and selector for the Chameleon-64 hardware, but if it is of some interest, I could add them to the DE1 version. There will still remain the issue of joystick interface, though.

 

Nice work by the way, I've considered at one time working on Atari 8bit series of computers, but it seems useless now

[Atari Jaguar in FPGA]

Well, before adding support for other hardware, I still need to do the "basics", as connecting a joystick or adding sound output

Also, as it is a bare port of the netlists, it currently runs only on high-end FPGAs. One of my primary goals would be to trim down the reqirements, by removing/enhancing existing logic so it would run on a Cyclone III for instance.

[Atari Jaguar in FPGA]

The blank band comes from my scandoubler (for VGA output) miscalculations of blanking periods

About sound, joystick, etc. I still need to connect Jerry's I/Os to something... It shouldn't be too hard to do

[Atari Jaguar in FPGA]

Don't worry, bugs are still there, I may have added a few myself

Some changes have been made to the netlist, most of them were done to cope with the weakness of my compiler/translator.

I had to change a bit the memory controller to handle a "RAM ready" signal, but it may be unnecessary now (I had to "map" the 64-bit DRAM access logic of the original design to the 32-bit SSRAM available on the FPGA board).

[Flashback Portable VS GamePort ?]

Ah...you're the Intellivision guy :-)! I've been to your site many times!

Well I'm not that much into Intellivision, I just made a proof-of-concept cartridge emulation with a FPGA. However, I'm planning to do it again, using a fast MCU this time.

 

I basically have the whole 2600 up and running. I'd say compatibility is about 95% of all

titles released prior to 1992. I don't have the ability to test some of the stranger bankswitching

schemed games at this time since I haven't written the circuits yet. There are a few critical things

I have to do though :

Very nice! If you don't mind sharing your work, I think I could help on some of these tasks.

BTW, did you know this guy's project ?

 

PM me your email address ! I wouldn't mind talking with you !

I'm contacting you right now

[Flashback Portable VS GamePort ?]

Someday I'll finish my 2600 VHDL project. In fact, I might just release the source code when Wanga comes out!

[Flashback Portable VS GamePort ?]

Someday I'll finish my 2600 VHDL project. In fact, I might just release the source code when Wanga comes out :-)!

 

(Please, no "Ok Ed, that makes two cases of vaporware"....trust me, my version does exist and I have given the source to a few people in the event I die or FPGA design induces a heart attack :-)!)

 

I'm playing with FPGAs too, and I would be interested by what you've done so far with the 2600. I've emulated some old (obscure) computers myself (the latest one being the Oric-1). Have a look at my website, there is some information about my projects.

[Making cartridges/burning EPROMs]

You can also use EEPROMs instead of EPROMs (no need for an eraser in this case).

Here is what I did to use a 28C64 EEPROM on a Pixels Past 2K/4K PCB :

Works fine on a 7800 I own, haven't tested it on a 2600 though.

[Explosion Takes Out AtariAge [Updated]]

Nice to see the site back online.

On another note, the store is "down for maintenance". Is it related to this issue or not ?

Does anyone know when it will be back again ?

[Making my own atari 2600 game on my mac]

Go to Options, Input Settings, in the Emul. Events tab. Select the "Toggle debugger mode" item, click on "Erase", then "Map" and press the key you want to use to enter debugger mode.