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hneemann / Digital

A digital logic designer and circuit simulator.
GNU General Public License v3.0
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Reload at start in EEPROM #853

Closed d-teif closed 3 years ago

d-teif commented 3 years ago

I know that EEPROM is maintening data when interrupt, but in some case, it will be helpful to reload data from file like in ROM. In my case, for convenience static data and dynamic data are in the same memory, so reloding static data at start will be helpful

Thanks in advance

hneemann commented 3 years ago

It is possible to load a file into an EEPROM via the "Settings" at the start of the simulation.

d-teif commented 3 years ago

Thanks, i haven't this option

De: "Helmut Neemann" @.> À: "hneemann/Digital" @.> Cc: "DIDIER TEIFRETO" @.>, "Author" @.> Envoyé: Mercredi 6 Octobre 2021 07:11:23 Objet: Re: [hneemann/Digital] Reload at start in EEPROM (#853)

It is possible to load a file into an EEPROM via the "Settings" at the start of the simulation.

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hneemann commented 3 years ago

@d-teif If you don't want to use this setting, the only way is to split the address range and to use a ROM together with an EEPROM.

d-teif commented 3 years ago

Yes I do this now! I Just ask me why reload rom and not eeprom.

De: "Helmut Neemann" @.> À: "hneemann/Digital" @.> Cc: "DIDIER TEIFRETO" @.>, "Mention" @.> Envoyé: Mercredi 6 Octobre 2021 16:08:29 Objet: Re: [hneemann/Digital] Reload at start in EEPROM (#853)

[ https://github.com/d-teif | @d-teif ] If you don't want to use this setting, the only way is to split the address range and to use a ROM together with an EEPROM.

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hneemann commented 3 years ago

Reloading the ROM does not change the ROM content stored in the circuit, but only replaces the content for that particular start of the simulation. If the simulation is stopped, the ROM content remains unchanged. This behavior collides with that of the EEPROM which will keep any change. The ROM load function is also a legacy function that has since been replaced by the initialize program memory setting. I would rather remove this legacy function than spread it further.