6502 code equivalent to that in the design manual. Not an entire operating system, but perhaps enough to get started. NB the listing has wrong bytes for the LSR instruction. I've added conditional assembly around these so that you can generate the LSR opcodes or the ones in the listing.
59 pages of detailed information, seems to be a later version of the NCR 5380 family datasheet. Extras include some 6502 circuitry and assembly code listing.
Adobe Portable Document Format -
2.99 MB -
02/03/2019 at 15:20
Keith