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Franck GALLIAT

Java Analyst programmer // Electronic DIYer

Lyon - France
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franck-galliat

This user joined on 11/09/2016.

Things I've Built

Canon X-07 TTL Serial + USB + SDCard

I hacked nearly all port of this HandHeldCpt, last in date : Serial port connected to AT328P that allows UART / USB-SLAVE / SDCard support

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Mitsuru Yamada wrote 02/03/2023 at 00:47 point

Thank you for liking and following my #PERSEUS-9 homemade mobile 6502 computer! Yesterday, I added diagrams of the multiplication and division algorithms to the my own floating point interpreter article that I am implementing on this computer.

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Franck GALLIAT wrote 02/03/2023 at 07:20 point

Yes !, did you add videos yesterday too, I did not saw those last time.

Your case is pretty clean (one reason of the Like), 

seeing your diagrams : are you always rendering full screen mem ? (in scrolling process only ?)  

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Mitsuru Yamada wrote 02/03/2023 at 09:30 point

Thank you. Yesterday's update has no video, just JPEG figures. The update is listed at the end of the project log of #Homemade Floating Point Interpreter for 6502.

In the terminal section system of PERSEUS-9, all character data on the buffer memory is converted to font bit pattern and constantly updated to the display. I simply used the constant execution method because the update is necessary not only when scrolling but also when entering a single character, deleting, or blinking the cursor.

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Franck GALLIAT wrote 02/03/2023 at 09:41 point

For the screen/terminal refresh I had exactly same issues,

So I decided to use a 'dirty' flag for each row (in your case 7x 1 bool)

then partially updating my screen : in case of character adding/removing I often have only 1 row to render.. -- but I know, it makes the render code heavier

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Craig wrote 05/05/2020 at 18:58 point

Franck, i have not played with the ardunio at all.  if someone were to use the arduino to control the bus in the  #Magnetic Bubble Memory Makes a Comeback  or the #SBC-85 Bus Monitor , would you have to bit-bang the whole interface or are there control signals like WR* & RD*  that could be used directly?

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Franck GALLIAT wrote 05/05/2020 at 19:51 point

I planned to leave 1 or 2 UARTs free as an extension port system (those are not yet mapped to Os anyway) so I guess WR/RD could be used directly...

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Craig wrote 05/05/2020 at 18:12 point

thanks for liking my #SBC-85 8085 Single Board Computer project. Looking at your arduino projects, maybe interfacing some of the other SBC-85 ecosystems like the #Magnetic Bubble Memory Makes a Comeback board would be a fun project.    or even making an arduino based board for the SBC-85 backplane so all the ecosystem could be used?

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Franck GALLIAT wrote 05/05/2020 at 18:33 point

thanks, When I will have few much time, I should look to your ecosystem bus/comm specs better, see soon

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Franck GALLIAT wrote 06/08/2018 at 06:24 point

Hi your welcome, all handheld projects interest me ;-)

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Craig Hissett wrote 06/08/2018 at 05:51 point

Thanks for following my #GBAA: Game Boy Advance Arduino project buddy!

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Martian wrote 05/15/2018 at 22:27 point

Thanks for following my CP/M Computer using an Arduino.

https://hackaday.io/project/19560-z80-cpm-computer-using-an-arduino

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Franck GALLIAT wrote 11/20/2016 at 09:23 point

Hi, as I went to re-see your profile, You've earned another LIKE ;) (Playing with ESP8266) thanks for your work & explanations 

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Hari Wiguna wrote 11/19/2016 at 03:07 point

Franck, Thank you for liking one of my projects!

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