Re: EBCDIC and Unicode

[Charles Wilt <charles.wilt@xxxxxxxxx>]

The only thing I recall is some changes around DBCS support...

> From what I've found, may have been v5r3 (
https://www.ibm.com/support/pages/running-multinational-os400-using-dbcs-and-sbcs
)

> At R520 and earlier, all the other languages must be installed on OS/400
> as secondary languages. Because you have DBCS secondary languages being
> installed (Traditional and Simplified Chinese), English Uppercase and
> Lowercase Support for DBCS must be installed as the primary language. The
> feature code is 2984.


At R530 and later releases, it is no longer necessary that a primary DBCS
> language be installed to support a secondary DBCS language. Starting at
> V5R3, the primary installed language can be SBCS such as 2924 to support
> DBCS language such as 2962 - Japanese Kanji.


https://www.think400.dk/files/Memo%20to%20User%20v.5.3.pdf

Changes to system QIGC value Prior to this release, the system value QIGC
> (DBCS version installed indicator), was set on if a DBCS version of OS/400
> was installed. In V5R3, any NLV can support DBCS, so this value will always
> be set to on. If you have applications that check this value, you should
> update them to use the job level DBCS indicator. You can find more
> information about this indicator in the Retrieve Job Information (QUSRJOBI)
> API.


https://archive-direct.midrange.com/midrange-l/200512/msg00532.html

V5R3 now allows any NLV to
> support a DBCS environment as found under Programming/Globalization/What's
> new for V5R3:
> Ideographic language (DBCS) support. In previous releases, OS/400(R)
> required an Ideographic language as the primary language to support an
> Ideographic language secondary language or an Ideographic language device.
> This restriction is removed. This means that any NLV of OS/400 can support
> an Ideographic language device or program.


IIRC this made using Unicode much simpler...

HTH,
Charles


On Wed, Oct 9, 2024 at 5:10 PM James H. H. Lampert via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

> I have this very vague recollection of hearing that in the more recent
> revisions of the OS, the data in a PF is, at the lowest level, stored in
> some Unicode format, regardless of what encoding scheme it's presented in.
>
> Is there any truth to this, or am I sucking antimatter?
>
> --
> JHHL
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