Re: 13 sector or 16 sector Disk ][ card?

[tomk@pro-nsdapple.cts.com (Tom Kelly)]

In <pdueck-1406970030180001@dial15.pli.mb.ca>
pdueck@pli.mb.ca (Perry Dueck) writes:

>Perhaps a bit of a stupid question, but here it goes anyways (for my
>benefit if nothing else):    :)
>
>How would one distinguish between a Disk ][ card which is capable of 13
>sectors (original...wayyyyy back in the early days of the Apple ][), and a
>16 sector Disk ][ interface card?  Are the ROM chips marked with a special
>number to distinguish between the two different kinds or something?
>
>Regards, Perry Dueck

 
As I recall, the PROMs are labeled P5 & P6 on the 13 sector card.
 
             The PROMs are labeled P5A & P6A on the 13 sector card.
 
 
The PROM change is all that is needed to "upgrade" the cards.
 
I have the parts if anyone wants to upgrade their cards.
 
The parts are $5.00 each.
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