Jim did an impressive work filling the space as much as possible! I think the best way to add new code is using another EEPROM chip or replace some part of Jim’s code as he said in his mail.
The refurbished chip is some kind of EEPROM with 16KB capacity, I don’t know what type and brand it actually is, the original printing was polished, and then some “brand” and “type” were etched.
The recycled chip is a used original chip.
> On Apr 4, 2022, at 12:17 AM, Magnus Olsson <
mne...@gmail.com> wrote:
>
> 1. Is there any free space in the PAL-1 ROM supplied with the ROM board, so I can add code of my own to it, or does the pre-programmed software fill it completely?
>
> 2. I see that on Tindie, there are different options for which type of ROM (if any) to order together with the board. What exactly is the difference between a "refurbished and re-branded 28C265" and a "recycled 28C265"? It sounds like both are pre-used, since there's also the more expensive choice of a brand-new one, but I'm not sure of the difference between refurbishing and recycling.
>
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Best,
Liu