[Coco] EPROMS

[Zippster]

For 16K you can use a 27C128 (or equivalent) or a larger eprom with the
appropriate upper address lines tied low or high, using less than it’s full
capacity.

Another thing to consider is speed.  I’d get 150ns or faster chips to be on the 
safe side, though 200ns may work.

- Ed


> On Aug 3, 2017, at 8:20 AM, Carlos Camacho <idevgames at gmail.com> wrote:
> 
> The advice on my question of buying modern low-voltage EPROMS to burn
> Extended BASIC for old CoCos was...
> 
> "2764 or 27C64 for the older CoCos (8K) and 27C256 for the CoCo 3 (32K)."
> 
> The 2764 is 8KB right, so that can handle the CoCos that have Color BASIC
> and Extended BASIC in different chips. How about for the CoCos that used a
> single chip which had both Color BASIC and Extended BASIC together?
> Wouldn't that need a 16K EPROM? If so, what is the recommendation?
> 
> Cheers,
> 
> Carlos
> 
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