Re: Please vote for Syntax check in /FREE! -- RPG400-L

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rob@xxxxxxxxx wrote:

Let's see, you use an EMULATOR to use SEU. Why can't you use an EMULATOR to run WDSC? The only thing being instead of emulating a 5250 screen this other emulator would be emulating a Windows environment.

The only problem here is that we are being fast and loose with the definition of emulator. A pretty good definition is, "An emulator is something that translates APIs that don't exist on a given platform into APIs that do." By this definition, windows emulators are true emulators in that they translate windows APIs into something else's APIs (like FreeBSD) so that binaries can run on that foreign platform. However, a 5250 emulator fails that definition. It doesn't translate any APIs, it just reads and writes a data stream, same as a telnet client or a web browser.

So really it is incorrect to say that we use an emulator to run SEU. We all use 5250 clients; i.e. programs that understand the 5250 protocol. SEU doesn't run in the "emulator", it runs on the iSeries. The iSeries sends the 5250 stream to various clients. Nothing is really emulated.

James Rich

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