Verdammt, nun habe ich’s doch getan, wahrscheinlich viel zu teuer und ohne Funktion, ich war aber so fasziniert…fast wie im Rausch ☺️ Mal sehen ob überhaupt und wann ich ihn zum Leben erwecken kann
looking pretty good
Verdammt, nun habe ich’s doch getan, wahrscheinlich viel zu teuer und ohne Funktion, ich war aber so fasziniert…fast wie im Rausch ☺️ Mal sehen ob überhaupt und wann ich ihn zum Leben erwecken kann
looking pretty good
Usagi ( https://www.youtube.com/watch?v=Cj3UIqvTReg ) refers to this sync separator:
I just read your other post on the VT240 Seems like we are in the same shoes, looking for a VR241 substitute, right?
It looks like it is out of sync. Have you tried it with S-Video or Composite?
Manual attached.
What are you up to? Lost your nuclear warhead in the shed?
Hah! You'll be the first to know when I find it, I promise
No worries, I'll know if it comes online; the big red button on my desk will light up.
Alles anzeigenWar innerhalb von 24 Stunden bei mir in Californien - Made in Germany! Guter Preis!
Verkauft sich wohl gut bei Amazon momentan und ist schon im Lager vor Ort... warum wohl?
Auch Jod-Tabletten verkaufen sich bestens... hoffen wir mal dass wir sie nicht demnächst brauchen!
Nicht so ernst nehmen...
What are you up to? Lost your nuclear warhead in the shed?
Yes, currently for testing purposes I have connected the DO directly, but the problem seems like a capacitive crosstalk from the clock line. It can very well be grounding or routing issue on the panel. We have to get rid of those spikes, either with a small resistor at the source plus a capacitor or with a fast rectifier. Or we could route the clock differently and filtering it cold with a small capacitor.
Anyhow, PC-Rath_de thank you very much for the support, I think we are getting close to the final design.
PC-Rath_de has sent me components and a batch from the new PCBs.
The wiring in the last revision is correct.
Power over parallel port is functioning flawlessly.
The TXB0104 level shifter is also good, BUT
on the SD Card MISO, there are some spikes that translate badly over the PC.
We need an RC filter on that line, and it will work.
Here is my build:
Alles anzeigenHeute habe ich noch ein bisschen was in der Scheune meines guten Freundes gefunden.
Das Zenith ZDS-625nl Notebook läuft leider nicht an, das Netzteil funktioniert soweit. Mal sehen ob ich das noch irgendwie retten kann.
Die meisten anderen alten Computer und Festplatten hatte ich bereits früher mitgenommen.
Jetzt liegen in der Scheune nur noch meist halb geschlachtete und defekte PC-Kompatible vom Typ 80486er und neuer oder wir kommen nicht dran, da zu viel andere Dinge davor liegen und stehen...
Mein allererster Laptop war ein Zenith 433VL. Ich habe ihn immer noch. Ich habe ihn letztes Jahr überholt, aber die Tastatur ist nicht mehr zu retten. Falls Du dich entscheidest, diesen aufzugeben, würde ich ihn gerne nehmen. So weit ich weiß, ist die Tastatur kompatibel.
Alles anzeigenAlles anzeigenAlles anzeigenSo Fazit:
Es läuft nicht. Jeder Kontakt ist geprüft. Mainboard ist mit K6-233 Mhz, getestet wurde mit ECP und SPP auf Standartport.
Karte ist eine 8GB NoName, 5V und 3,3V sind stabil.
Ich gehe davon aus, dass der Treiber mit /d und ohne Portangaben automatisch Laufwerk 1 und Port 378 nimmt? Ich kann allerdings auch keine 5V auf den Parallelpins 5,6,7,8,9 messen?
Edit: ich glaube den Fehler gefunden zu haben: Die Pinbelegung war für weiblich, ich habe männlich aufgelötet und somit ist 1=13 und 13=1
Default port base is 0x378 -- ok
There should be 5V on pins 5,6,7,8,9 -- failDid you create a 32MB partition that is FAT16 formatted on the card?
Also, I can take a look at one of the KITs.
You use DB25F, i use DB25M. I fixed it and use Female + Gender changer
3,8V on pin 5,6,7,8,9 after driver load (it will not work to power it on this computer, so i use USB-C, 5V ok, 3,3V ok).
One logical 32MB FAT16 on NoName-TF and one primary 32MB FAT16 on Sandisk-TF
Then i see the sd port is turn around. So i fixed it and test every sd contact to chip and every IEEE contact to chip. All ok, but don´t work.
Now i test the sd card again (ok) and replace the TXB-Chip. Same problem.
If your circuit plan is right, it can only be, that the TXB can´t do his job (could you please check plan?)
Yes, please give me your adress and i send it to you. Did you have a 25p gender changer or 25p cable (because it would be my last one?)
PM
Alles anzeigenSo Fazit:
Es läuft nicht. Jeder Kontakt ist geprüft. Mainboard ist mit K6-233 Mhz, getestet wurde mit ECP und SPP auf Standartport.
Karte ist eine 8GB NoName, 5V und 3,3V sind stabil.
Ich gehe davon aus, dass der Treiber mit /d und ohne Portangaben automatisch Laufwerk 1 und Port 378 nimmt? Ich kann allerdings auch keine 5V auf den Parallelpins 5,6,7,8,9 messen?
Edit: ich glaube den Fehler gefunden zu haben: Die Pinbelegung war für weiblich, ich habe männlich aufgelötet und somit ist 1=13 und 13=1
Default port base is 0x378 -- ok
There should be 5V on pins 5,6,7,8,9 -- fail
Did you create a 32MB partition that is FAT16 formatted on the card?
Also, I can take a look at one of the KITs.
The Portable Paper
I have not yet tried to power it. I hope the battery didn't spill ( it is a sealed gel, so it should be just fine and very dead ) I read that these are extremely reliable.
Does anyone have documentation for a HP-IL to USB interface or drive emulator?
Also ( another related side project
Fill the empty parts with ground KiCad has autofill function.
I did, but didn't like it
Alles anzeigenIt might be premature - as my time for retro is constrained - but I hope I'll finish this at some point:
In theory this should be a ROM/TAPE emulator cartridge for the HX-20 based on the ESP32 MCU acting as FTP over wifi.
For now I have built it on protoboard, and connected the cartridge type identifier lines to GPIOs, not sure yet if the pulldown is strong enough, so there might be some changes I have to administer. Also, the firmware is using now the built-in 4M flash, but it would make sense to add an SD card socket, so it would work without wifi connection as well.
This is my prototype box, I still have to clean up the 3D model:
and the first life signs of the FTP server
Some progress:
Also ( another related side project
Alles anzeigenI get it, the Portfolio is stupid. And I agree (thx btw.)
Sorry if this was misunderstood - unfortunately deepl.com does not always translate ideally (...my English would be even worse... ).
I meant "das ist aber doof", so more like: That's a stupid situation with that stupid device...
(That's what happens if you're not careful with these translators...)
:)Frank
Don't you worry. I understood immediately.
In dem Satzbau im Englischem könnte man das eher verstehen als "Du redest Blödsinn"
That's stupid!
I get it, the Portfolio is stupid. And I agree (thx btw.)
I have enabled the debug flag in the driver but I can't see anything as the system goes into lock-down after loading the driver.
That's stupid! I would especially need it for this device ...
The Pofo still has some special features - perhaps the driver also collides with them: https://archive.org/details/po…rpraxis-markt-und-technik
:)Franky
Something is definitely fishy with it. I don't understand how the Portfolio works in detail and I am not planning to understand it either
There are quite a few better solutions for the Portfolio than this one. ( e.g. CF card https://forum.atari-home.de/index.php?topic=12866.0 )
Do you think that the part would also work with an Atari Portfolio or Highscreen Handy Organizer? Do I have to use an external supply voltage for it?
:)Frank
I have found my laplink cable, and transferred the driver. Mmy guess is that 128k RAM won't cut it. I have enabled the debug flag in the driver but I can't see anything as the system goes into lock-down after loading the driver.
You may just type in HEX data using debug...
Right. Funny thing is that I wanted to use transfolio with the parallel interface, but I couldn't find my laplink cable
Do you think that the part would also work with an Atari Portfolio or Highscreen Handy Organizer? Do I have to use an external supply voltage for it?
:)Frank
I wanted to try it out today four you, but my PoFo is acting up. I think there is something wrong with the Serial adapter, so I can't bootstrap it.
Do you think that the part would also work with an Atari Portfolio or Highscreen Handy Organizer? Do I have to use an external supply voltage for it?
:)Frank
I don't see why it should not work. You would definitely need to use external power. ( small powerbank? )
Brace yourselves: the driver is actually bit banging the SD card in SPI mode, R/W speed is highly dependent on the system clock.
On an 8088 running at 4.77MHz average access speed is ~5 kilobytes per second.
There is also a theoretical upper limit around 40KB/s.
I have also designed a compact version of the board that is powered either through the port or an external USB-C cable, but I have not built this particular board yet:
Question regarding your USB implementation, as im fighting with one for the first time too:
In your design you use 10K pullups on the CC1/CC2, but aren't pullups used on the - a bit misleadingly? - called "DOWNstream facing port" HOST, ie the one providing the power, and the "UPstream facing port" peripheral uses 51k pulldowns?
i did not put any resistors on the USB, just pulling power
Alles anzeigenOK, i will try to convert.
Too expensive, i will look at this in May/June, if my actually project is done.
I will try to get it into this shell (USB C and SD card backside)
You mean 3D printing is too expensive? Okay. Have fun with it.
If you want 100 or more and they should look perfect, then it is expensive. It it easier to use something, that you get for 0,20€ or less.
I think like this:
Awesome!
OK, i will try to convert.
Too expensive, i will look at this in May/June, if my actually project is done.
I will try to get it into this shell (USB C and SD card backside)
You mean 3D printing is too expensive? Okay. Have fun with it.
Did you have maybe KiCAD files?
Yes but opensource mean not automatic that i can sell it commercial. So i better ask.
I will check and try to get all in one plug shell.
I don't have KICAD files, but you can convert eagle to kicad. I was going to design a 3D printable case for this one, but it only makes sense if it is already tested.
T1000
- SD card adapter to parallel port ( bitbanged spi )
So you connect the cardreader-PCB direct to parallel? If you use the other pins for power supply (10mA each) you can make a external parallel cardreader, like a USB-Stick?
That´s really cool. Can you image to licence the idea and driver for a small batch prodution with 100/200 pieces?
The whole thing is opensource. Eagle files and the driver are here:
I have built and tested several prototypes of a parallel port powered circuit; so I know it works properly with ports that are IEEE1284 compliant.
I have also designed a compact version of the board that is powered either through the port or an external USB-C cable, but I have not built this particular board yet:
It should work, but needs testing. If you are up to it, then please try to build one and let me know how it went