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Thrashbarg
April 7th, 2005, 02:50 PM
Hi

I'm working on an Intel 8080A based computer (I wanted an old computer with lots of blinking lights :) ) and have come accross an 8276 CRT Controller from an old word processor. At least that's what I think it is...

I can't find anything which comes close to describing this chip in detail. If anyone has a datasheet for it I would appreciate your help.

Thanks,

Thrashbarg

Terry Yager
April 7th, 2005, 04:41 PM
Try www.alldatasheets.com

--T

Thrashbarg
April 7th, 2005, 04:51 PM
This was one of the many sites I tried as well as Google.

Forums/mailing lists are a last resort.

Terry Yager
April 7th, 2005, 05:34 PM
Well, I've just searched thru all my databooks, no joy. Have you tried posting in comp.os.cpm? Lots of old-timers there remember the 8080.

--T

Mike Bassett
October 10th, 2005, 12:59 PM
Hi,

I have the full specification of the 8275 Programmable CRT Controller (22 pages) amongst a whole raft of other stuff. The manuals I have at my disposal include:

MCS8080 Users Manual (Intel 1975)
MCS8085 Users Manual (Intel 1977)
Intel Componant data Catalogue (Intel 1980)
The 8080A Bugbook (Radio Shack 1978)
8080 Programming for logic design (Sybex 1976)
808A/8085 Assembly Language Programming (Sybex 1978)

Note that even though the 1980 manual still has the 8080A in it five years after my first 8080A manual, it also has the 8086, 8088 and 8089 and still no 8286!

Reply if you're interested and we'll work out how I can get the data to you.

Mike

Dren
January 30th, 2008, 05:47 AM
Hello,

I am also looking for the 8276-P datasheet. It's some sort of graphics uprocessor ? If anyone can email me a copy I'd appreciate it. As I am interested in making a graphics display (for the below)

I'll be definately making some uProc cards soon, (6502, 6809, 8051, or 8088) ROM, RAM, serial, I/O, RTC... possibly a DMA controller + anything else I can easily think of and add. (Details when the spec is decided). I'd appreciate suggestions if anyone has a request for a particular feature.

It would great to get it to run a real OS, rather than something I knock up, ideas ?

All the best

Dren

Elar
January 30th, 2008, 11:06 AM
I have 8275 datasheet:
http://icl486.pointclark.net/~pdf/i8275.pdf

8276 is lacking some 8275 functionality, at least light pen support is missing.

Dren
January 30th, 2008, 05:30 PM
I appreciate your effort and for getting back to me so fast.

I don't think it's going to be a useful device though as it still needs data to be loaded every display line :( There's better ways to generate a decent display using less PCB area and a full memory.

All the best

Dren

Sharkonwheels
January 30th, 2008, 09:27 PM
http://www.datasheetarchive.com/pdf/496874.pdf

T

ryanjone
February 13th, 2008, 02:04 AM
Hey, have you ever tried http://www.datasheetpro.com/ ? It is a free Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
Hope you will get what you want.
Good luck!

MikeS
February 13th, 2008, 08:44 PM
I appreciate your effort and for getting back to me so fast.

I don't think it's going to be a useful device though as it still needs data to be loaded every display line :( There's better ways to generate a decent display using less PCB area and a full memory.

All the best

Dren
-------------
I've got a pile of SMC CRT9007s just in case anybody has a use for one (or more); some even have a heat sink on 'em so they must be powerful ;-)

mike