FSVO already. 1951 and 1954 *ARE* of comparable antiquity. I picked 1955 only because I knew that there was a 704 manual on bitsavers.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [[email protected]] on behalf of Robin Vowels [[email protected]] Sent: Friday, June 17, 2022 2:46 AM To: [email protected] Subject: Re: When did logical instructions appear? From: "Seymour J Metz" <[email protected]> To: <[email protected]> Sent: Friday, June 17, 2022 1:07 AM > Unsigned binary arithmetic goes back at least to the 704 in 1955. I already said that it goes back to 1951, at least. > I suspect that it goes back farther. There was no concept of halfword at the > time; > it was all 36-bit words. > Logical AND, OR, etc. have comparable antiquity. Logical AND, OR, EXCLUSIVE OR, etc, were already around by 1951. --- This email has been checked for viruses by Avast antivirus software. https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fantivirus&data=05%7C01%7Csmetz3%40gmu.edu%7C0b9b180d309741a60c1208da502d0de7%7C9e857255df574c47a0c00546460380cb%7C0%7C0%7C637910451699779917%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=0sQ0gE9RgKpptKgTc4mKKuh2KiSnaf3CAYO08oDMEMk%3D&reserved=0
