Recently, I have been continuiosly checking the 6502.org Forum for new messages, but for at least a week I haven't been seeing any orange messages or cagegories. What's going on?

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Sam

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"OK, let's see, A0 on the 6502 goes to the ROM. Now where was that reset vector?"

It's not uncommon for this forum to have low traffic periods. I've been on it for several years and have seen this before.

I have not been as active lately either. I am slowly working on CF storage solutions and ethernet solutions. I hope to be able to post some results in the near future.

Don't give up... things will pick up!

Daryl

For many of us, the weather outside is still great - sunshine & high 80s today.

Things will likely pick up in forum when vacations are over , it gets cold out , and there are fewer daylight hours for outside activities .

Yesterday was the first time I burned eproms since early May.

I personally prefer EEPROMs. They can easily be written in real-time (in fact, I have ideas in my head for a customizable workbench system that has a reset vector that points to $E000 that jumps to a monitor so I can easily program the ROM from the system).

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Sam

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"OK, let's see, A0 on the 6502 goes to the ROM. Now where was that reset vector?"

Check out my SBC Monitor. It has exactly what you described. I use the W command to write data from RAM to EEPROM. It relocates the "write"code into RAM (inside the keyboard buffer). You have to do that as the EEPROM will not be ready for the next CPU fetch cycle and the CPU will go off into never-never land (been there, done that!).

Daryl

Hm.

I've been messing with the AVR instead.

On the 2865 (my favorite EEPROM, which I don't have!), there is a READY//BUSY line on the EEPROM. It would probably work to hook up the RDY/BSY line to the RDY line on the 6502.

Oh, and the pre-programmed program I'm thinking of is something like this:

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Sam

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"OK, let's see, A0 on the 6502 goes to the ROM. Now where was that reset vector?"