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  1. B

    Wang 600, need some information (maintenance and so on)

    I believe I only copied 2 of the smaller programs over. The countdown and the Fahrenheit to Celcius programs. Those work fine on the 700. I was afraid of that, I have been looking for a compatible output writer but only ever seen one (which was advertised as a 700 compatible one with a hand...
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    Wang 600, need some information (maintenance and so on)

    To test the tape drive is not too difficult (at least, to see if it's in any working state). Just push and hold the forward and reverse buttons and see if the drive spins (I knew mine was not in the best of shapes because the speed was very unstable due to a worn belt). My Wang 700B is by far...
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    Wang 600, need some information (maintenance and so on)

    If you do want to take a look inside, some of the screws are a little bit hidden (although my experience is based on the Wang 700 that @Wappynutter linked to). The 4 screws around the rear fan are just there to keep the fan attached, but the other 2 screws hold the rear top half to the bottom...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    That is correct, I used some cheap USB tape digitiser to back up the tapes that came with the machine. I guess the only reason they might have had to adjust the speed from regular audio tape would be stability. Although the system seems pretty forgiving. But for the small demo programs on...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    The 24% speed increase was needed for the digitised recording of the demotape (which was made late 2023/early 2024), I don't remember if that was also the case for the program tapes from the 70's. Like I said, there was a lot of fiddling to get stuff just right for it not to throw errors. Every...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    Hmm, I think you're right... I would have to read back through all this to be sure where that was exactly. But I've not changed the polarity of the actual head in the 700. The only inversions I've done were in software on the laptop to get them working on the 700. That's why I was so surprised...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    Hmm, something weird has happened and I'm not sure if I'm liking it... I tried to load some stuff using the laptop and the tape adaptor... and it wasn't working, same garbage was put into memory. So, I inverted the signal that the laptop played into the 700... and it works? again? Just to be...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    It seems that the tape drive is failing again, but for a different reason. I was unable to load anything from the tape I was using that has some test programs on it. Nothing special, it started with a 200 steps of "0"s to clean up the start of memory, followed by the pythagoras example from the...
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    Anyone who has built up a microchannel system with sound, compact flash, ethernet, etc., was it worth it?

    I have that "resound OPL" adlib card for MCA systems from TexElec in an PS/2 77i... and it does what any adlib soundcard does to a system that would otherwise have no sound at all. If you like playing games with anything more then a beeper, it's good and I'm quite happy with it.
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    Wang Series 700B Advanced Programming Calculator Refurb.

    Oh wow, thank you making this. I know that at some point I will have to work on the power supply, which means taking the whole chassis out. I did not do that because it seemed to risky to damage the ratsnest of wiring under the connectors. This would make me far more confident to do this at some...
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    Osborne 1 Video Adapter.

    I had some difficulty reading what parts were used in the schematic, I would really like something like this for my Osborne 1. So got Kicad going to make a proper one. But I can't quite figure out what the diodes and the transistor have to be (It's not just the handwriting, mine is easily as...
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    Having trouble connecting a gotek to my Osborne 1a to run software

    Well... in my Osborne 1 I still have both drives and the Gotek connected to the floppy cable. I only switch the drive select line to have either the A: drive be the Gotek or the real drive. I've put a little board on the floppy header and connected the original floppy drive cable to that and...
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    Having trouble connecting a gotek to my Osborne 1a to run software

    These are the CFG files I use for the Gotek in my Osborne 1. The main difference is that I have an older, stock Osborne 1 (not a 1A which I came the double density upgrade... but I could be wrong about that.), so these settings are for the single density drives. Although I think the 1A should at...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    After going through just about all the tapes I think I have a workable set of recordings that can be cleaned up and made to work with the real machine. 1 tape broke, the bit of clear tape that sticks to the internal reels was loose and got stuck to something in the digitiser. It's fixable I...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    Ah, I see, that would also be usefull. The hardest part I guess would be the translation between PC bytes and the data structure on tape for the Wang. I could make recordings and digitised versions of every keypress/toggle-toprow combo on the machine, for now saving and loading programs seems to...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    The new head in the tapedrive of the 700B is still a mono head. I made sure to get a mono head because that would be the easiest to connect. Strangly enough, mono heads are very easy to get (maybe even easier then stereo) and very cheap. Most of those cheap new radio's that still have a tape...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    It also seems that minor damage can be fairly easily repaired by cutting and pasting in Audacity. The left image has some minor damage to the bottom track, the right image has that fixed by cutting and pasting some valid pulses in their place (ignore the look of the top track, it's not used...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    Oh, now I see what you mean... I tried it and the machine does nothing out of the ordinairy after setting the toggles to 12 and pressing 04. It simply sets 12 04 into that spot on the program counter. It doesn't seem to give any error, maybe it only errors out once this step is used in a running...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    The odd thing is, if I use the actual tape in the drive to load those 200 zero's into memory, it works. And if I use the tape adaptor to record that into the microphone input of the laptop and then play it back through the same tape adaptor using a headphone output, it also works. But I need...
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    Wang Series 700B Advanced Programming Calculator Refurb.

    This is what the learn screen looks like. The first tube is not on (this has the + and - signs in it) then 3 digits on for the PC. 4 off. 2 on 1 off 2 on for the instruction and then 3 off I think. And ofcourse, the Y register is off completly. Set PC screen (with 2 digits of the 3 typed in)...
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