I read "validate these into just two classes" as validate that the zone - not 0-9 and transform A-F appropriately into either C or D.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Assembler List [[email protected]] on behalf of Paul Gilmartin [[email protected]] Sent: Saturday, February 12, 2022 8:40 PM To: [email protected] Subject: Re: Rules for Zoned Overpunch On Feb 12, 2022, at 18:21:59, Seymour J Metz wrote: > > Why not CVB/LTR/BC? > It appears that the OP wants to "validate"; detect and report the non-modal sign codes. If the original is zoned it might require: PACK; CVB; CVD; UNPK; CLC > ________________________________________ > From: Paul Gilmartin > Sent: Friday, February 11, 2022 1:14 PM > > On Feb 11, 2022, at 11:00:58, Dave Clark wrote: >> >> I know that x'F1' and x'C1' are positive and that x'D1' is >> negative. But what if I find x'A1', x'B1', or x'E1' for overpunch values? >> What is the shortest way (in terms of assembler instructions) to validate >> these into just two classes -- positive and negative? >> > How about CVB then CVD, then compare the result to the original? -- gil
