Re: SDWA - SDWACMPC conversion

From: "Donald Blake" Sent: Friday, April 13, 2018 7:00 AM Let me try that again ... WORK DS CL6 DS X , Slack byte UNPK WORK(7),SDWACMPC(4) NC WORK,=X'0F0F0F0F0F0F' TR

Re: SDWA - SDWACMPC conversion

From: "Robin Vowels" Sent: Saturday, April 14, 2018 2:35 PM Should be OCWORK,='F0F0F0F0F0F0' --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

Re: SDWA - SDWACMPC conversion

Okay, I was getting some wires crossed over this in that I conflated the special case of converting binary data to a hexadecimal character string and the general case where binary data in (putatively) packed decima format is

Re: SDWA - SDWACMPC conversion

From: "Martin Ward" Sent: Saturday, April 14, 2018 12:13 AM On 13/04/18 15:02, Seymour J Metz wrote: Unpacking x'0123' gives you x'F0F132'; the OI then gives you x'F0F1F2'; what you want is x'F0F1F2F3'. Or with an UNNPK length of 4 you get x'F0F0F1F2'; still not what you

Re: SDWA - SDWACMPC conversion

From: "Seymour J Metz" Sent: Saturday, April 14, 2018 12:17 AM Of course; the standard way to convert binary to hex is the UNPK/TR with a one byte pad. There is no such "standard" way. The usual way is to use CVD. --- This email has been checked for viruses by Avast

Re: SDWA - SDWACMPC conversion

On 13/04/18 15:02, Seymour J Metz wrote: Unpacking x'0123' gives you x'F0F132'; the OI then gives you x'F0F1F2'; what you want is x'F0F1F2F3'. Or with an UNNPK length of 4 you get x'F0F0F1F2'; still not what you want. Suppose the byte after the X'0123' is X'xy' (where x and y are any hex

Re: SDWA - SDWACMPC conversion

Unpacking x'0123' gives you x'F0F132'; the OI then gives you x'F0F1F2'; what you want is x'F0F1F2F3'. Or with an UNNPK length of 4 you get x'F0F0F1F2'; still not what you want. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 From: IBM

Re: SDWA - SDWACMPC conversion

I lost half this thread, but wouldn't this whole deal be easier if you used a mix of SRL and SRDL in an even odd pair to separate the nibbles and then either a couple of OI's depending on the value of the nibble or a table "0-9A-F" to index into? That way you'd get the hex value to look up.

Re: SDWA - SDWACMPC conversion

Of course; the standard way to convert binary to hex is the UNPK/TR with a one byte pad. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 From: IBM Mainframe Assembler List on behalf of Martin Ward