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Member Since 23 May 2011
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#3957788 Mega Speedy software and logic V1.10 released

Posted by TheMontezuma on Fri Feb 9, 2018 2:41 PM

Finally everything works perfectly!

Megaspeedy is really well designed to support future extensions :thumbsup:

"IS Plate" is the best example that adding completely new hardware is just a matter of updating CPLD and flash.

#3895069 MegaCart Studio Header

Posted by TheMontezuma on Tue Nov 21, 2017 12:26 PM

Apparently what I was doing is generating the cart files BEFORE I was saving the project.


I'm glad I could help :)


Yes, saving the project is an optional activity, so you can generate files for programming Megacart without doing that.

At the time Bernd proposed to have a customizable header, MegcartStudio was almost ready and I didn't want to spend too much effort on that.

Hence the idea, to re-use the project file name as a text to be shown in a header.


By the way, the *.mcp project files include all games and are compressed, so it is convenient to share them or to exchange them with other users.

You can even extract the games from the *.mcp files using MegacartStudio.

#3894068 MegaCart Studio Header

Posted by TheMontezuma on Mon Nov 20, 2017 12:55 AM

For the life of me, I cannot figure out how to edit the header in MegaCart Studio!  The web-based instructions say to replace "the first 20 letters of the MCP file" but I cannot figure out how to generate and/or access this file!  I am using V6.0 of MegaCart Studio.  Can anyone give me some pointers?  Thanks.


Go to Project menu and save your project. The name you will give to your project will appear in the header.

Then go to File menu and generate your the cart files as usually.

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#3882618 Version 3 boots fine, 4 does not.

Posted by TheMontezuma on Fri Nov 3, 2017 3:11 AM

not sure here....

dtr is not dsr, was the idea to hold dtr to enable arduino? it might be same method other device use to switch host vs server mode..

if that is the case just call them exactly what they are and allow them to work as normal but name it the arduino's checkbox 'Arduino Mode(DTR)'

just remember a standard already exists on a few other devices to flip things around to write to real drives etc....


what is the arduino and DTR relationship if it does not do handshaking? sounds like it might just be jumper in the cable rather than controlled

a link to the arduino cable info and what that arduino provides/needs might help here...


woohoo I get to download another one!


The issue is related to the serial port driver.


For some reasons it wouldn't let the incoming data (from Atari to RespeQt) through on your PC when the DTR/RTS signals are ON.

Perhpas there is a logic in the driver which expects corresponding serial lines (DSR/RTR) from the "DCE" (data communication equipment) to be ON as well.


Anyway, the default is now DTR and RTS are OFF (as it was before), which works fine for you.

On the other hand the serial port on the Arduino only lets the incoming data through when either DTR or RTS is ON (that's why the "DTR Control Enable" checkbox).


D/L'd r4X but did not see new arduino dtr choice is it hidden somewhere?


Yes, it is ;)

The checkbox is only relevant for "NONE" and for "SOFTWARE (SIO2BT)" handshake and it is only visible if you select one of those.

On the other hand "Trigger on Falling edge" makes only sense if you use hardware handshake, so it is only visible if you selected DSR/CTS/RI.

This way I hope that users are not getting confused too much, because only relevant settings are presented to them.

#3882362 Version 3 boots fine, 4 does not.

Posted by TheMontezuma on Thu Nov 2, 2017 4:50 PM

OK. We have a solution for _The Doctor__ :)

However the changes which I introduced in serial port configuration (in r4) had a purpose.

I have already written about them here:


Now I rolled back the changes in the develop branch.

But doing so I broke compatibility with Arduino based SIO2PC cable mentioned above:




The solution is one more checkbox in the RespeQt configuration (only for NONE and for SOFTWARE handshake, since Arduino's serial port does not support hardware handshake anyway)

It will be called "DTR Control Enable" (this is a serial port setting I mentioned above) and will be unchecked per default.

Arduino based SIO2PC cable users will have to enable the checkbox.


Here is the version with new checkbox:

Attached File  RespeQt-r4X.zip   17.93MB   19 downloads

#3881620 Version 3 boots fine, 4 does not.

Posted by TheMontezuma on Wed Nov 1, 2017 4:15 PM

And one more try:

This time I rolled back the changes related to the serial port configuration (DTR,RTS):

Attached File  RespeQt-r4-falling-edge-clr-disable-dtr-rts.zip   18.09MB   19 downloads

#3879682 Can any Atari emulator talk to real SIO devices?

Posted by TheMontezuma on Mon Oct 30, 2017 4:58 AM

I have installed a Raspberry Pi in the 65XE case and it is a pretty nice setup running the "Emulation Station" software .

However it would be really nice to load games from a real floppy drive connected to Raspberry Pi via 1050-2-PC cable :)

#3864906 Back to Montezuma's Revenge...

Posted by TheMontezuma on Tue Oct 10, 2017 1:18 PM

Did you know that Robert Jaeger was also involved in the development of the Android version of the game? As one of his beta testers I got from him a nice cup with a screenshot from Montezuma's Revenge. You can imagine how precious it is for me...

#3854868 SIO2Arduino

Posted by TheMontezuma on Mon Sep 25, 2017 5:52 AM

A bit more information would help.
"It does not compile" is a wide field
of possibly reasons.
Please apppend the code you used
and "copy n` paste" the error message
of your compiler. An information about
the version of your IDE would help too.


Hi Stefan,
The file system access libraries (FAT) have been changed since Sio2Arduino project was developed in a way that the compatibility with old versions was broken.
There are two ways to solve the problem:
1) Downgrade the Arduino IDE
2) Rework the SIO2Arduino code
It would be great if anybody had time and knwoledge to do it (2) and could publish it here :)
Best Regards

#3854463 Homesoft game collection and SIO2SD

Posted by TheMontezuma on Sun Sep 24, 2017 2:25 PM

I added extracting those disks to a "NOT OK" folder. You will get all the files with file names in Atari DOS format.

Some of them are OK and you can manually rename them. Some require additional files in the (Atari) file system and will not work.

There are games in collection that exist in two versions:

1) as a single xex file, but for 130XE only

2) as multiple files for 64kB machines

So, if you have 128kB RAM, you may skip the versions for 64kB machines without having a big lost.

And there are games like Koronis Rift or Gaunlet that exist only as disk images (as far as I know).


I have uploaded the improved source code and the jar file to the Github, so anybody can use and extend the tool:


#3837740 eclaire XL P.C.B. aka "Atari on FPGA project"

Posted by TheMontezuma on Wed Aug 30, 2017 11:08 AM

I actually like the idea of having 4 ports very much and it was not clear for me if you want to remove or add them (I don't have the developer board, but I'm interested in the final one).


> But it save me some pennies to not include the d-sub connectors on board!


Please think it over. I wouldn't like to spoil a professionally manufactered board with additional soldering. D-sub connectors on board is a good idea.

#3832545 MyBIOS, an alternative OS for your Atari.

Posted by TheMontezuma on Tue Aug 22, 2017 10:44 AM

On Fujiama 2017 I updated the Bios4Config flash in my Atari with a different set of 16 OS ROMs (this time including MyBios).

HardwareDoc has updated the hardcoded names in the Bios4Config software to reflect my new content and I was able to test standalone MyBios OS :)

This is pretty cool - it is the first OS ROM supporting Hi-Speed communication over Bluetooth.

#3828464 Abbuc website down ?

Posted by TheMontezuma on Wed Aug 16, 2017 2:55 AM

The server is back :)



false-start (was shortly back...)


and now back again!

#3827326 SIO2BT Manual

Posted by TheMontezuma on Mon Aug 14, 2017 11:12 AM

The ABBUC Server is down :(


but there is an alternative location:


#3804996 MyBIOS, an alternative OS for your Atari.

Posted by TheMontezuma on Thu Jul 13, 2017 2:16 PM

Just uploaded the current firmware and I love it :)

Thank you, Sir!