On Fri, 1 Feb 2019 at 09:29, R.S. <r.skoru...@bremultibank.com.pl> wrote: > > IMHO the topic is HMC for zPDT. Unfortunately zPDT does not have HMC in > any form, real or emulated. > It's not mainframe, it's only emulation.
No, zPDT *is* a mainframe. It implements a permitted subset of the architecture documented in the Principles of Operation. The HMC is not described in the Principles of Operation. It replaces the knobs, lights, and switches that provided the operator interface on older systems. Some of the *functions* performed by the HMC are architected (and are implemented by zPDT without an HMC), but none of how it works or what the interface looks like. Here is the only description of anything like an HMC in the POO: "Operator Facilities The operator facilities provide the functions necessary for operator control of the machine. Associated with the operator facilities may be an operator-console device, which may also be used as an I/O device for communicating with the program. The main functions provided by the operator facilities include resetting, clearing, initial program loading, start, stop, alter, and display." And later: "The operator facilities may be implemented on different models in various technologies and configurations. On some models, more than one set of physical representations of some keys, controls, and indicators may be provided, such as on multiple local or remote operating stations, which may be effective concurrently. " All subsequent description of these functions refer to "keys", e.g. the load key, the start and stop keys, and so on, just as in the S/360 POO in 1964. To the OP's plans... I think doing penetration testing on a box with no available architectural doc at all, and extremely limited external doc, might be useful, but how will you even know if it's misbehaving if there are no specs? Sure, maybe you can force a buffer overrun or something in the web interface, take over the box (Linux?), and then what? I don't see that it has any close relation to IBM's mainframe OSs and their security issues. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
