Oh thats really cool Ed! I did not know that code was written to use the 57109 and set up to display in RPN as well and one that was available (along with basic) except for some text I ran by after re

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Hello, The MM57109 was used on the Netronics Full Basic card. You can read a little about it on my Elf II restoration web page: http://www.cosmacvip.com/ELFII/ElfII.html Search for MM57109 on that pag

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I have been looking for months now reading some old magazines like Radio Electronics and Popular Electronics (as well as some Byte, Kilobaud, etc as well) and found an article I never saw before. (yea

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Not sure if this would interest anyone but I just came across this 44 key IR Remote that uses an NEC IR protocol. I thought it might be interesting to print a custom keypad overlay and use it as a wir

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That is not the only way to do custom baud rates… page 3 in that paper says When the Baud rate is set from an application program it is done in exactly the same way as with a standard legacy Windows C

#Pico-Elf-V2 #Serial #Electronics

Thanks, Will, that made me laugh. After I put everything on one single power source, eliminating the FTDI power. I plugged the 16C550 back into the RTC/NVR/UART card, and I could still reboot. I got b

#Pico-Elf-V2 #Serial #Electronics

And gets a lot shorter if you do! Will "A person who never made a mistake never tried anything new." -- Albert Einstein

#Pico-Elf-V2 #Serial #Electronics

Hi David, Yes. The catch is the Windows FTDI driver itself defines a set of these constants in a table of supported baud rates in a configuration file. It seems one can update the driver configuration

#Pico-Elf-V2 #Serial #Electronics

Running all three cards from the regulated 5v on the Pixie Video Card seems to fix my problem. With all three cards running from the same power supply, I can use either FTDI cable just fine. The FTDI

#Pico-Elf-V2 #Serial #Electronics

Take a look here: https://www.ftdichip.com/Support/Knowledgebase/index.html?whatbaudratesareachieveabl.htm The FTDI is pretty granular at normal baud rates and actually more so as rates get lower. The

#Pico-Elf-V2 #Serial #Electronics

Hi David, Thank you. Both cables are from Sparkfun and seem to be of fairly good quality, or at least I can say they aren't cheap. With the Pico/Elf v2 and one card connected, using the 5v FTDI cable,

#Pico-Elf-V2 #Serial #Electronics

Gaston, When you get garbage text, if you reset again, even if you have to do so repeatedly, does it eventually work and you get good text until the next boot? If so, I think the problem is the same a

#Pico-Elf-V2 #Serial #Electronics

When I connect up the Pico/Elf v2 with the STG v107 ROM using FTDI, the STG RTC/NVR/UART card (without the UART) and the Pixie Video GLCD card together, I have trouble rebooting the Pico/Elf v2 when I

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I'm geeked! The PCBs turned out nice and the Arduino driver software is coming along nicely. I can program AT28C256 EEPROMs and the 128, 256, and 512-KiB SST39SF' series flash ROMs and I can also prog

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Nice!!! A great idea

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Ham Radio wrote: Ah; doing it that way means you can plug in *anything* that you want to automatically turn off (EPROM eraser, soldering iron, etc.) Lee -- Excellence does not require perfection. -- H

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Looks good, Bernie! Tom Virus-free. www.avast.com

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As per Lee’s suggestion, here is a way of not ever cooking EEPROMs again and/or leaving your soldering station/iron on all night. Regards, Bernie Murphy

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The sources I have, including an EE textbook, state that the erase mechanism is that the UV light excites the electrons enough so that they can tunnel back through the oxide layer. That text also stat

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Well, I found this web site that has a lot more detail, including a manual, on the kit. http://www.mdcccii.com/rca1802.php The manual is not very respectful of the switches, to say the least. It descr

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