X'80' is set by WAIT and cleared by POST. You should only see the X'80' from and interrupt or a different dispatching unit.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 עַם יִשְׂרָאֵל חַי נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Joseph Reichman <[email protected]> Sent: Friday, June 5, 2026 6:21 PM To: [email protected] <[email protected]> Subject: Waitting on multiple ECB’s External Message: Use Caution Hi I have wait on ECBLIST when it’s breaks out of the wait one of the ECB’s has a X’00’ In the first byte My question is when going into a wait in let’s say 4 ECB before any of them get posted with x’40’ Shouldn’t all of them have the x’80’ bit on Doesn’t the wait do that until one gets posted with x’40’ Thanks ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
