HP Forum Archive 21

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WP34s Comms Message #1 Posted by John Abbott (S. Africa) on 7 Mar 2012, 6:52 a.m. Hi, wondering if someone can offer advice. I am having a problem transferring programs from the calculator to the PC (emulator). I can transfer from the PC to wp34s, but the other way around I get an "I/O" error. I am running ver 2602 with crystal installed. Procedure: 1. With program in RAM on calc, press RECV on emulator 2. Press SENDP on calc 3. After maybe 2-3 seconds I get "I/O Error" on both. I must admit this is the first time transferring to the PC. What (stupid?) step am I omitting?. Any help appreciated. Thanks John

Re: WP34s Comms Message #2 Posted by Marcus von Cube, Germany on 7 Mar 2012, 9:25 a.m., in response to message #1 by John Abbott (S. Africa) I can only assume that you have installed the crystal but not activated it. If you get a message when pressing ON+C, the crystal is not active. Press ON+C twice in a row without releasing ON/EXIT. After a second or so the message "Ok" should appear. There is a flash image with the name calc_xtal.bin (or calc_xtal_full.bin, including the library) that does not need activation of the crystal. The normal image needs the ON+C sequence.

Re: WP34s Comms Message #3 Posted by John Abbott (S. Africa) on 7 Mar 2012, 9:40 a.m., in response to message #2 by Marcus von Cube, Germany Thanks Marcus. The crystal is definitely activated, as if I press On+C sequence again, no message. Also transfers from the PC to calc are fine. I will try re-flashing tonight and try again. Regards John

Re: WP34s Comms Message #4 Posted by pascal_meheut on 7 Mar 2012, 10:20 a.m., in response to message #3 by John Abbott (S. Africa) You can also try with the new emulator. It should not be different but who knows? I'll add a "Serial comm debug" function one day.

Re: WP34s Comms Message #5 Posted by Les Wright on 7 Mar 2012, 10:07 p.m., in response to message #1 by John Abbott (S. Africa) John, this is no solution, merely commiseration. I suffered similar unidirectional errors with v. 2.2 when running the emulator on XP in VMWare Fusion on a MacBook. Drove me nuts. No such problems in a similar setup on my iMac, or on an ancient doorstop of a Compaq Presario running XP. Since upgrading all things to v. 3, the problem on the MacBook has vanished. Go figure. Must be some gremlin thing. Sorry I can't be more help. Les

Re: WP34s Comms Message #6 Posted by Dominic Richens on 7 Mar 2012, 10:24 p.m., in response to message #5 by Les Wright That was probably the open_port() bug - was fixed in V3 and prop'd to the V2.2 branch, but after the 1990 patched build was released.

Re: WP34s Comms Message #7 Posted by John Abbott (S. Africa) on 9 Mar 2012, 12:51 a.m., in response to message #1 by John Abbott (S. Africa) Well thanks for all your replies. Last night I re-flashed with the latest version, and all seems OK. Regards

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