UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Computers

Notices

Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

Closed Thread
 
Thread Tools
Old 9th Jun 2020, 6:18 pm   #1
nigelr2000
Heptode
 
nigelr2000's Avatar
 
Join Date: Nov 2008
Location: North Walsham, Norfolk, UK.
Posts: 899
Default 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?
Attached Thumbnails
Click image for larger version

Name:	DSCN8360.JPG
Views:	191
Size:	153.3 KB
ID:	208116  
nigelr2000 is offline  
Old 9th Jun 2020, 6:26 pm   #2
G6Tanuki
Dekatron
 
G6Tanuki's Avatar
 
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
Default 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.
G6Tanuki is offline  
Old 9th Jun 2020, 6:46 pm   #3
buggies
Heptode
 
buggies's Avatar
 
Join Date: Jan 2009
Location: West Lothian, UK.
Posts: 760
Default 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)
__________________
George
buggies is offline  
Old 10th Jun 2020, 10:51 am   #4
nigelr2000
Heptode
 
nigelr2000's Avatar
 
Join Date: Nov 2008
Location: North Walsham, Norfolk, UK.
Posts: 899
Default 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
nigelr2000 is offline  
Old 10th Jun 2020, 12:17 pm   #5
jjl
Octode
 
jjl's Avatar
 
Join Date: Jan 2003
Location: Ware, Herts. UK.
Posts: 1,082
Default 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
jjl is online now  
Old 10th Jun 2020, 6:42 pm   #6
dragonser
Heptode
 
dragonser's Avatar
 
Join Date: Aug 2009
Location: Carshalton, Surrey, UK.
Posts: 734
Default 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....
__________________
Regards Peter B
dragonser is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 11:44 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.