> On Apr 1, 2022, at 7:51 PM, Paul Koning via cctalk <cctalk@classiccmp.org>
> wrote:
>
> Neat looking stuff. It doesn't look like core rope memory in the sense of
> the AGC ROM, nor in the sense of the Electrologica X1. It looks more like
> the transformer memory used in Wang calculators that you documented in your
> core ROM paper.
>
> paul
>
I second the Transformer ROM theory. I guess the transformers are the epoxied
modules on the top half of the board, with some weird magnetic/inductance
wizardry at the bottom doing the adressing. You may find it’s a hybrid of core
rope and transformer ROM for super dense ROMs. I’m no expert at the nuances of
this field though.
Reminds me a bit of my Wagenr Computer transformer ROM:
https://www.reddit.com/r/vintagecomputing/comments/m3pe29/a_very_photogenic_rom_board_from_an_early_70s/
<https://www.reddit.com/r/vintagecomputing/comments/m3pe29/a_very_photogenic_rom_board_from_an_early_70s/>
Cheers,
Josh Rice
