On Wed, 18 Jun 2025 11:22:08 -0500, Paul Gilmartin <[email protected]> wrote:
>Diagnose? I believe its existence is documented; otherwise, "model dependent". >And no mnemonic. Ask yourself why DIAGNOSE does not use SCONs. DIAGNOSE used to be a pseudo instruction that was processed by VM CP exception handler. SCONs should be processed by hardware instead of software. Is there now an actual instruction? My favorite is the XDC 00DEAD00 pseudo instruction generated by the DIE macro. As an FYI, opcodes are part of the instruction language. All CPU (x86, RISCV, IBM z, ...) decode instructions during the decode phase. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
