There is no such thing as a sign before the value is packed or
converted to binary.
Since all numbers have a zone field of X’F’ there can be no discussion about a
sign since it is not part of the number
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On Thu, Jun 4, 2020 at 5:53 PM -0700, <[email protected]> wrote:
On 2020-06-05 07:35, Seymour J Metz wrote:
> Yeah, 8 microsecond instead of .75 microsecond.
The S/360 normal cycle time was 2 microseconds.
> --
> Shmuel (Seymour J.) Metz
>
> ________________________________________
> From: [email protected] [[email protected]]
> Sent: Thursday, June 4, 2020 5:28 PM
> To: IBM Mainframe Assembler List
> Cc: Seymour J Metz
> Subject: Re: Convert *signed* EBCDIC to packed decimal
>
> On 2020-06-05 03:45, Seymour J Metz wrote:
>> I remember $.25/bit, but don't recall what year that was; too low for
>> 1960, too high for 1969.
>
> Don't forget that there were two types of core memory for
> the S360 --
> LCS used a product from India, with a much slower cycle time
> compared to IBM's normal memory.
