Re: 5250 Delete key

I understood that - but I couldn't see how anyone could live with a remapped delete key since it would never actually delete any more (well not without a trip back to the host, knowing where the cursor was exactly, and then sending the modified data back - and all for what?


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Jul 28, 2019, at 11:54 AM, Buck Calabro <kc2hiz@xxxxxxxxx> wrote:

On Sun, 28 Jul 2019 at 11:42, Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:

The Delete key is of course not listed among the aid bytes.

5250 is known as a block mode device. That is to say it only communicates complete blocks of data - not individual keystrokes. Even when it appears to be responding to a single keystroke (say F3) it is still sending a block of data along with it. Think CA vs CF keys.

So keys like Delete, Insert, Shift, etc. are never transmitted - they are simply handled by the device - or these days of course by the emulator.

Keys that require a response from the host such as Enter, Page Up/Down, etc. are the only ones transmitted.

Right. We were thinking that the emulator could map the physical
Delete key to one of the AID-generating keys instead.

--buck
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