HW Reset

[42bs]

I am having often issues that "jaggd -r" does not fully reset the GD. Is there a way to add a reset button to the GD?

[SainT]

How does it not "fully" reset? What is the issue you are seeing?

[42bs]

When I start programs with 

jaggd.exe -rd -stub -ux $<,a:\$$4000,x:\$$4000

it often does not work a second time. The I have to power-cycle the Jaguar. Even a reset of the console often does not work.

After a while even jagger -r does not work.

 

[SainT]

Ah, I see, that's because the back end has somehow hung. Are you accessing the JagGD in your code? If so I can only think you've done something which has killed it somehow.

[42bs]

I am not messing with JagGD directly. Only

.PHONY: jaggd
jaggd: $(DEMO).cof
	jaggd.exe -rd -stub -ux $<,a:\$$4000,x:\$$4000

A "make jaggd" works sometimes three but mostly only two times. After this, something gets messed up. Then I need to power-cycle the machine.

 

[SainT]

Hmm, ok, something I'll have to take a look at...

[42bs]

13 hours ago, SainT said:

Hmm, ok, something I'll have to take a look at...

If you want some "demo" code, I can PM it.

[productof76]

@SainT

I have installed a reset button on my Jaguar. It is connected to Pin 13 on IC U9 and resets to GND. It works fine with every game I‘ve tested so far. But with the GD it doesn‘t work. The console resets but then the Jag start screen freezes red everytime.

 

Is this a known issue?

 

Is there a solution to carry out the reset as it should be?

 

Thank you!

Edited April 30 by productof76

[42bs]

1 hour ago, productof76 said:

@SainT

I have installed a reset button on my Jaguar. It is connected to Pin 13 on IC U9 and resets to GND. It works fine with every game I‘ve tested so far. But with the GD it doesn‘t work. The console resets but then the Jag start screen freezes red everytime.

 

Is this a known issue?

 

Is there a solution to carry out the reset as it should be?

 

Thank you!

Not sure if this is the right pin. I connected the button to the card port and reset works fine.

 

[productof76]

Ok, in the tutorials I found so far pin13 on U9 is always recommended and it works pretty well except for the GD.

 

Can you point out for me on which pin exactly on the cart port you grab the reset?

 

Edit: Found this schematics. Seems it must be on 18B or 33B can you clarify for me?

 

http://www.jagware.org/jag_uploads/dev/glenn_bruner_atarishowroom/cart_sch.htm

Edited April 30 by productof76

[productof76]

Tested on the cartport pins I’ve mentioned above… no action! Tested with Wolfenstein 3D first (not with the GD). On 18B to GND glitches appear and the game broke down on 33B to GND there is nothing happening. @42bs could you specify?

 

Maybe @SainT or anybody else could give me some advice why the reset to pin 13/U9 work with any game but doesn‘t work with the GD? 😊

Edited May 1 by productof76

[42bs]

I am pretty sure I used B18. It makes a real reset so the system boots again.

No glitches at all.

 

[productof76]

@42bs …and you trigger it via ground? …just to get sure…

Edited May 1 by productof76

[42bs]

31 minutes ago, productof76 said:

@42bs …and you trigger it via ground? …just to get sure…

 

Sorry, checked with a multimeter, and it is B33 to GND. Not B18!

[productof76]

Ok, reset is working on B33 but the result is the same: It works well with regular games but with GD it always freezes with the red screen. 😔

[42bs]

I have never seen it. After a reset, the last loaded game reboots.

[productof76]

Ok, I see… I never tried the reset whith a loaded game in GD. Yes, that is working fine.

 

@42bs Thanks for help

 

But doing a reset in the GD menu leads to the red freeze.

 

I was hoping that the reset could trigger a whole new boot up for the GD so that the menu shows up again.

 

It seems that is not possible?

 

I knew about the lack of an IGR… thought that was a different thing but obviously it is the same issue… OK my fault I should have known better.

Edited May 1 by productof76

[42bs]

No, a reset luckily reboots the game. For the GD menu you need a power cycle or issue a command via USB.

[SainT]

This is to be expected on the JagGD, it was not designed to be reset in this way. You can reset from the usb connection, however, but that may not be much use to you.

 

I think it may be possible to detect an external reset and switch the cart to menu mode, but I can’t remember off hand if the reset connection in the cart is output only or if I can read from it as well.

 

I will be getting back to the JagGD in a few weeks, so I’ll take a look at this as well then.

[Zerosquare]

There are several reset signals:

 

- RESETIL (pin 33B on the cartridge port), which is connected to the capacitor that generates the power-on reset thru a 100 ohm resistor. You can drive it low to force a restart and/or monitor it (but it rises slowly because of the capacitor, so a Schmitt-trigger input should be used).

 

- CLNRSTL (available on TP13 and pin 10 of U9 ; not available on the cartridge port) ; this is the "clean" version generated from RESETIL by two chained Schmitt-trigger inverters in U9. It's connected to Jerry's reset input (pin 28 of U15).

 

- RESETL (pin 18B on the cartridge port) that's a buffered output generated by Jerry (pin 29 of U15), connected to the reset inputs of the rest of the system.