How do you dump a ROM? (Character)

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TedThompson's picture
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How do you dump a ROM? (Character)

A link would suffice, I have this character ROM that I'm fairly sure is aftermarket. May be worthless but I thought it might be good to dump since I don't see any info anywhere. 

 

Sticker on top says

(c)1984 CLSYSTEMS

MODEL: 

SERIAL:

With ALA hand written somewhat beside both model and serial. 

Just in case anyone recognises it. 

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The CHARGEN ROM is not

The CHARGEN ROM is not readable in system.  You need some kind of programmer or ROM card to read it.  If it is for a ][+, it is probably a 3rd party lower case chip.  Those were extremely common.  Most clones came with the equivalent.  Clones that used an upper case only ROM like the one Apple supplied in the ][+ were fairly rare, because there was no reason not to supply lower case.  I honestly don't know why Apple didn't start putting in lower case standard until the //e.  They could very easily have done what many of the clones did which was use a lower case ROM or EPROM and put in a shift lock key where the power light is on the ][+.  That would have been a minimum amount of work and would have made life a lot easier for a lot of people.

 

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Its a //e.

Its a //e.

I wasnt expecting in system. Absent of any other advice, I'm planning to pair it with an arduino and dump the contents to its serial monitor. 

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That's one way to do it.  You

That's one way to do it.  You may find buying an EPROM programmer to be worthwhile though.  There are several of them that are < $100.

 

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