Jump to content
IGNORED

Clean version of the Jaguar's schematic


Zerosquare

Recommended Posts

By the way, in electronics, never leave an unused CMOS input unconnected.
An unconnected CMOS input tends to float between VDD and GND, creating greater power consumption and overheating.
So basically, unused CMOS inputs are connected to GND or VDD through pull-dow or pull-up resistor.

Link to comment
Share on other sites

As a side note, they created the CoJag so that the 68020 or alternate CPU (MIPS 3041) had its own dedicated memory so the program was more predictable and it wouldn't have to deal with any of the slowdown from the Jaguar chipset. I ran across one board that was straight up a 586 PC motherboard attached to a Jamma board and the thing even had an AGP slot. It was a Maximum Force board I believe but was clearly no longer a CoJag at that point. No idea why or what trouble they ended up going through to make that all work out.

Yep the last of the arcade series was pc based sadly. I thought it was Site 4 though.

Link to comment
Share on other sites

sorry but I forgot that the configuration of the Jaguar is much more flexible. In fact, the external data BUS of the DSP can work very well in 16 or 32 bits regardless of the width of the data BUS of the CPU (68000). So the most likely reason why the DSP's external bus is in 16bit mode is that the 32bit mode is buggy and one or more components would have to be added to work around the bugs, if this possible.

To be sure, you have to test. Take your soldering iron!

Link to comment
Share on other sites

 

sorry but I forgot that the configuration of the Jaguar is much more flexible. In fact, the external data BUS of the DSP can work very well in 16 or 32 bits regardless of the width of the data BUS of the CPU (68000). So the most likely reason why the DSP's external bus is in 16bit mode is that the 32bit mode is buggy and one or more components would have to be added to work around the bugs, if this possible.

 

To be sure, you have to test. Take your soldering iron!

 

 

My bad again, the width of the external data bus of the DSP is the same as of the CPU

Link to comment
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...