UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

frsimen · 16th Oct 2011, 3:34 pm

Ricard,

The 57 page data at this site: http://www.datasheetarchive.com/UPD78312-datasheet.html
gives the binary value of each of the opcodes. It's a bit of a chore, but from that you can draw up your own table of opcodes. A lot of the instructions seem to use two op codes, just to add to add to the fun.

Paula

16th Oct 2011, 3:34 pm	#2
frsimen Heptode Join Date: Jan 2011 Location: Croydon, London, UK. Posts: 773	Re: NEC µPD78312 opcode map anyone? Ricard, The 57 page data at this site: http://www.datasheetarchive.com/UPD78312-datasheet.html gives the binary value of each of the opcodes. It's a bit of a chore, but from that you can draw up your own table of opcodes. A lot of the instructions seem to use two op codes, just to add to add to the fun. Paula