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Cp-Coder wrote: Truck rolls over on highway in New Hampshire, dumping kegs and cases of beer[^]
Somehow it took me back page one of 'A Tale of Two Cities'.
Well, Bernie's up there, so it kind of fits!
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The other vehicle was carrying crates of tofu, but nobody gave a sh1t.
I wanna be a eunuchs developer! Pass me a bread knife!
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Cp-Coder wrote: Somehow it took me back page one of 'A Tale of Two Cities'.
 for mentioning the book I (imho) believe is one of the greatest novels in English.
I've enjoyed the 3-hour Audible dramatization narrated by Robert Lindsay, Alison Steadman, Jonathan Coy, Andrew Scott, Paul Ready, Karl Johnsonby.
The best full text audio I've found is narrated by Buck Schirner (Brilliance Audio's Classic Collection, Audible).
cheers, Bill
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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Thanks! 
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And if you've got a match, you can turn it into a cloud.
The old ways are the best, but the new ways have buzzwords. You have to fight idiots on their ground -- you don't want them coming near yours.
I wanna be a eunuchs developer! Pass me a bread knife!
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Happy birthday to your better half, BusterBoy! ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif) Made that omlette yet? 
/ravi
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I could swear I just read that a few months ago. Time flies.
Happy Birthday!
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The moment of truth came... without any smoke, but also without properly executing the program.
The oscar showed a nice steady heartbeat and timing signals on the bus, all at the right frequencies. the state codes showed that the processor was alternately fetching instructions and executing them, as it should. There was also activity on the data bus, as well as on the address bus. perfect, but why does the LED that is hooked up to the processor's single I/O line (very much like a microcontroller) not light up at all?
After some time of measuring and searching I thought that I found it. The lower address lines were connected in reverse order. Easy to fix.
So I switch on the power, the power LED lights up, and the second one stays dark. I was already reaching for the power switch when it starts to blink merrily. Exactly what the program in the EEPROM should do. I guess, I should look for a smaller capacitor for that power-on reset.
Here it is with both LEDs on at the moment the picture was taken.[^] It's a little hard to see on the picture because of the bright lamp.
Now come a few modifications before I can safely have a board made:
- Replace red LEDs (and all future displays) with blue ones. It's a High Elf, not a Dark Elf.
- Add a MAX232 level shifter and we have it talking to a PC in no time over the serial port and terminal emulation. Without a UART! The same signal that now blinks the LED can be used to emulate a serial port. Of course I will need a slightly different program in the EEPROM, but I already have that ready.
- Add another 8 bit register, this time set up as an output port. Then I have 24 address lines and can expand the (banked) memory up to 16 megabytes. More than enough for a little 8 bit processor.
- Throw out the EEPROM and replace it with a pin compatible RAM. Now the Zwölf would not have anything to execute at startup. But that already worked on the old Elf. The processor has a 'load' mode, that can be entered after a reset and allows to load bytes into memory via DMA. The old Elf simply used it's hex keyboard and 7 segment displays as DMA devices in load mode. Today I would simply let a PIC microcontroller control the processor's mode and copy the BIOS or whatever I want it to boot from a tiny serial EPROM into memory via DMA, reset again and then switch the processor into run mode. Maybe I should still keep the door open for traditional hex keyboards and seven segment displays. Blue displays, of course.
And then I can make the (first) board to get everything off the breadboard. And make room for all the fun stuff that will go to the second board.
One last thing: I found an easy way to get up to 8 processors on that bus without stepping on each other's toes. Zwölf II might actually be a multiprocessor system.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Cool beans, looks like you got Zwölf running like a singer sewing machine!
Monday starts Diarrhea awareness week, runs until Friday!
JaxCoder.com
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Except for the slightly bigger and faster memories it's actually very close to the original Elf from 1976. Six of those little processors brought the Galileo probe to jupiter, survived in its radiation belt for years and finally crashed the probe into Jupiter, so that it does not contaminate one of the moons. Especially not the moon Europa. They did not want a dead probe with 15 kg Plutonium in its nuclear batteries to crash there.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Yeah I read about that, pretty freaking amazing!
Good luck getting a board made. Do you plan on having any extras made?
Monday starts Diarrhea awareness week, runs until Friday!
JaxCoder.com
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Why not? But the second board is going to get more interesting. How about PS/2 ports for a mouse and a keyboard? Or an IDE port with two Compact Flash memory cards as SSDs? A MC6847 as graphics chip? A YAMAHA sound chip?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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What I meant was like this[^] guy did with the Z80.
Monday starts Diarrhea awareness week, runs until Friday!
JaxCoder.com
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Great!
You should create kits for sale...
"The only place where Success comes before Work is in the dictionary." Vidal Sassoon, 1928 - 2012
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Like this one here - The Lounge
Realized there was an interesting note about VS 2020 way back then in this forum message, but it won't open now. 
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Try putting this in the Sugs & Bugs forum.
- I would love to change the world, but they won’t give me the source code.
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Try this link:
The Lounge[^]
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Jwalant Natvarlal Soneji wrote: - The Lounge
Your link works for me. 
Social Media - A platform that makes it easier for the crazies to find each other.
Everyone is born right handed. Only the strongest overcome it.
Fight for left-handed rights and hand equality.
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When it was first introduced, the web had been described as a "living document". Translation: It keeps changing. So...links stop working. If there's anything I've learned, it's to save (locally) anything I want to hang on to. Then nobody can take it away from me.
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dandy72 wrote: Then nobody can take it away from me.
Except for Murphy. And Chuck Norris.
"Five fruits and vegetables a day? What a joke!
Personally, after the third watermelon, I'm full."
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Murphy would have to get to my backups as well.
As for Chuck Norris, well...I guess I'll hand him my backups.
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