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Author Topic: 3-chip microcomp-1  (Read 5923 times)

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Offline Simon123Topic starter

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3-chip microcomp-1
« on: August 24, 2011, 12:30:27 pm »
can somebothey please send me schematic for 3-chip?
picture (bw): http://www.rebelhosts.com/tt/te/images/p101.jpg
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Online EEVblog

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Re: 3-chip microcomp-1
« Reply #1 on: August 24, 2011, 12:34:46 pm »
Colin Mitchell at Talking Electronics has all the info, and can probably still sell you the mags and a kit maybe.
www.talkingelectronics.com
Tell him I sent you.

Dave.
« Last Edit: August 24, 2011, 12:36:29 pm by EEVblog »
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Offline joelby

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Re: 3-chip microcomp-1
« Reply #2 on: August 24, 2011, 12:38:35 pm »
Ha! That brings back memories. I'm sure I have a copy of that magazine issue stashed away somewhere. I've got a Tek-1B in the shed.
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Offline joelby

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Re: 3-chip microcomp-1
« Reply #3 on: August 24, 2011, 12:55:04 pm »
Anyway, is there any particular reason why you'd want to build one of these? They are very simple, and there should be dozens of comparable Z80 single board computer designs kicking around on the Internet.

From memory it was a simple oscillator (either using inverters or a transistor multivibrator), a 2732 EPROM, and 74LS374 latches for I/Os. The Tek-1 also used a 74LS138 to decode ports - the Microcomp might not have bothered with the latter for simplicity.
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Offline Simon123Topic starter

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Re: 3-chip microcomp-1
« Reply #4 on: August 24, 2011, 02:44:34 pm »
i want build it beacuse its cool (i watched demo of this comp)
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Offline Simon123Topic starter

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Re: 3-chip microcomp-1
« Reply #5 on: August 24, 2011, 02:45:52 pm »
Quote from: EEVblog on August 24, 2011, 12:34:46 pm
Colin Mitchell at Talking Electronics has all the info, and can probably still sell you the mags and a kit maybe.
www.talkingelectronics.com
Tell him I sent you.

Dave.
i just wana sch. not the mag.
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Offline Simon123Topic starter

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Re: 3-chip microcomp-1
« Reply #6 on: August 24, 2011, 02:50:27 pm »
Quote from: joelby on August 24, 2011, 12:38:35 pm
Ha! That brings back memories. I'm sure I have a copy of that magazine issue stashed away somewhere. I've got a Tek-1B in the shed.
can u send me the scan of sch and descr. if you find the mag. ?
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Offline joelby

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Re: 3-chip microcomp-1
« Reply #7 on: August 24, 2011, 03:11:21 pm »
It'll be somewhere at my parents' house, and I'm currently in a different state.. so maybe, but it'll take me a while to get around to it. I don't think the code for the EPROM was printed in the magazine, so you might have to ask Colin Mitchell about that regardless. Without this, it will literally do nothing.
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Offline Simon123Topic starter

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Re: 3-chip microcomp-1
« Reply #8 on: August 24, 2011, 03:25:09 pm »
tnx :D
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Online EEVblog

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Re: 3-chip microcomp-1
« Reply #9 on: August 25, 2011, 05:14:00 am »
Quote from: Simon123 on August 24, 2011, 02:44:34 pm
i want build it beacuse its cool (i watched demo of this comp)

Then the schematic ain't going to help you unless you have the firmware to go along with it. The articles are excellent, they are worth getting.
And it's only fair to pay a few bucks to Colin for his work. he might even have a kit (or the PCB) to make it easy for you to build.

Dave.
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