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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment. |
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9th Jun 2020, 6:18 pm | #1 |
Heptode
Join Date: Nov 2008
Location: North Walsham, Norfolk, UK.
Posts: 900
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Unidentified chip
Hi all
Been having a clear out and found a load of chips in tubes that I aquired from Freecycle a long while ago, there was loads and loads of new components all computer type stuff and stacks of turned pin sockets in different sizes so came in useful. At the time I didn't really look at the chips but now thought hmmmm wonder what they are, well I had 10 ULn2004, daed easy to idntify and still available now, 10x TMS 3450 digital clock chips and 5 of these Z0867108PEC? I have found reference to them as being out of stock but no data sheet specificaly for this chip. Any ideas I assume it's a micro of some sort as it was made by Zilog but what one and will it be of any use nowadays asthe date code sugests 1988?
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9th Jun 2020, 6:26 pm | #2 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,998
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Re: Unidentified chip
Zilog did a whole series of 'odd' chips which combined a CPU [Z8/Z80-style] along with a built-in-ROM which came with a built-in BASIC interpreter.
Hook up a few Kbytes of RAM and a 'bit-bang' interface to to drive a simple serial-port-connected ASCII terminal and maybe a couple of uncommitted serial-TTL-compatible data lines. They were typically intended for use in teaching applications. |
9th Jun 2020, 6:46 pm | #3 |
Heptode
Join Date: Jan 2009
Location: West Lothian, UK.
Posts: 761
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Re: Unidentified chip
Z8671 rang a bell - was a Z8 BYTE project from Steve Ciacia I think.
This page has virtually the same chip marking and looks like it does not need much to get it working - crystal, two caps and some pullups? http://www.vcfed.org/forum/showthrea...-aka-Z0867108)
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George |
10th Jun 2020, 10:51 am | #4 |
Heptode
Join Date: Nov 2008
Location: North Walsham, Norfolk, UK.
Posts: 900
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Re: Unidentified chip
Thats really interesting I have had a look at the manual now and I am amazed what it can do, sort of the arduino of it's day all in a 40 pin package and more than 30 years old
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10th Jun 2020, 12:17 pm | #5 |
Octode
Join Date: Jan 2003
Location: Ware, Herts. UK.
Posts: 1,082
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Re: Unidentified chip
I used one of these devices on a bought-in development board in around 1985. This was for a custom piece of automatic test equipment. Being programmable in BASIC and having a number of digital I/O lines made interfacing to and controlling a handful of relays, comparators and push-button switches very straightforward.
The test equipment was designed to automatically test a lamp driver / flasher hybrid that my then employer had designed and had hopes for great sales volumes. John |
10th Jun 2020, 6:42 pm | #6 |
Heptode
Join Date: Aug 2009
Location: Carshalton, Surrey, UK.
Posts: 734
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Re: Unidentified chip
Hi,
this is very interesting. I bought one of the Z8 chips with basic about 1990, but never got around to using it.. if / when I can find it then I should get a pcb board so it can be used....
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Regards Peter B |