where to find info

[Geoff & Sue Richards]

<snip>

>The prom was laid out in a matrix of addresses of a specific word length.
>To program them you specified an address and the "value" or the word.
Every
>bit which was a 1, the programmer would blow the fuse.

This is what I want to find out about  have seen maps etc but no idea how to
read 'em
Any books recommended
need to be basic

>These were very cheap compared to EPROMS but were definitely one shot
>devices.  Programming changes required new PROM chips.  Hope that helps.
Cheers
Geoff