HP86 problem

[Paul Berger (Canada)]

(07-19-2019 05:44 PM)Alexkumt Wrote:  now I have news about this problem. in fact, after connecting the computer to an HP monitor, I could see the first missing line. when I turn on the computer it displays nothing, even waiting for several minutes. however, when I press a button, a Warning "Warning 101: LANG UNDEFINED" message appears, then any command I issue always leaves the error "Error 88: BAD STMT" pressing the Run button, this appears instead "Error 48 on line 99999: End

I wonder if the "LANG" the warning message is referring to might be the national language ie English, French, German, etc. There is a switch on the board S2 that sets this and there are lots of potentially invalid combinations. Even if it appears to be set correctly you may want to verify switches that are supposed to be closed really are, it is not unheard of for these switches to go bad. The setting for English should be all switches in SW2 set to 0 which is likely the closed position it should be marked on the board.

If my guess above is correct then the error 88 may be coming up because it is unsure of what you are typing however I do not believe any of the BASIC statements are translated.

The error 48 may be normal when there is no end statement in memory it may search to the max line number looking for a end statement when you are trying to execute a program.

For some monitors you may need to adjust the horizontal and vertical size to get everything on the screen. The video signal is similar to NTSC but not exactly the same.

I can't verify my guess about LANG right now as my 86B is packed away for moving.

Paul.