Hi all,

Has anyone got an EagleCAD library for Rockwell R6501Q - I am drawing a schematic for troubleshooting.

I have the control box for a 'vintage' piece of machinery sitting on my desk, no longer functioning as it should. The processor is a Rockwell R6501Q, which despite its number, as far as I understand it, is not the original MOS 6501 (Motorola 8600 pinout) but a 'one-chip microprocessor' containing a 6502 and some peripherals.

The 'back up battery' (oh the irony), has thrown up over the main board, in close proximity of the CPU, RAM and ROM, damaging tracks and contacts.

All ICs are socketed. I have replaced the battery, repaired the tracks, cleaned the sockets, reflowed the solder, backed-up the ROM, but the screen is strobing or just blank.

There are 5 boards, and an internal linear power supply, that uses the mainboard for terminals and fuses and excitement!

The display is a SEIKO EPSON EG2201S, display driver E-1330 (SED1330), ROM for this also backed-up. All voltages to the display are within limits, with clean square waves on some lines.

Not ready to swap it out for an AVR or a raspberry pi yet

Next steps: check voltages to main components, check data flow between components.

All advice welcome.

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FourTrack

Welcome, FourTrack

Yes, you're right -- the R6501 is a microcontroller. There's a datasheet in the 6502.org documents archive here, and a Search for R6501 on this forum returns a few dozen matches. Dunno about an EagleCAD library, but maybe it's out there (or maybe someone will speak up).

Naturally we're curious to hear more about "the patient." Care to tell us more, or even post some photos? On this forum you're allowed to attach photos with your posts, so no need to fuss with hosting the pics on a third-party site.

cheers,
Jeff [ edit: fix link ]

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In 1988 my 65C02 got six new registers and 44 new full-speed instructions!
https://laughtonelectronics.com/Arcana/ ... mmary.html

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http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

FourTrack, welcome to our forum.

There are different versions of Eagle, and compatibility of the file format between different versions of Eagle does vary.
I'm on pre_Farnell Eagle 6.4, because I don't like that AutoDesk licensing rental scheme.


The pictures of pinout and chip package in the R6501Q1 was too blurred to be useful.
So I had used the pictures of pinout and chip package from the R6511Q datasheet instead.

When using this library, I would recommend to check if the pinout of the library device is correct,
and I also would recommend to print out the package on paper, then to put the chip on top of the paper to check if the mechanical dimensions of the library package are correct.

Pads have 32mil drill, 54mil diameter, better check if this fits to your PCB and to your chip socket.
//It's supposed to be possible to modify drill and diameter of pads with 'group' in the Eagle library editor.


Here we go, Eagle 6.4 library, try if you can open this file with your version of Eagle:

Cheers,
Dieter.

Thank you everyone,

ttlworks, I have download your library - thankyou - I will drop it into the schematic I am buzzing out from the board. Hopefully it will work with Autodesk Eagle - I have up/down graded to this version because it integrates with Fusion.

The 'patient' is a Butler 10/60 Hi-Tech Bench top plastic injection mo(u)lding machine, made in the UK in the 1980s, like most of the other junk I irrationally own (Land Rover, Boxford lathe & mill, Yamaha keyboards etc )

When new it would have been very expensive, for use in clean rooms; but for my purposes it is small and runs off a domestic power supply, an air compressor and a beer chiller , which means it can go in my workshop.

This is similar to the one I have: http://plasticinjectiondesign.com/butler_plastic_injection_molding_press_machine_with_a_dry_air_desiccant_dryer.php

There is almost no information on the internet, Butler was sold to MCP, who change their name to MTT, who were bought by Renishaw - all specialist tooling, measurement and manufacturing companies. There is still a picture of the Butler 12/90 on Renishaw's website but they no longer sell it.https://resources.renishaw.com/en/details/--14878

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FourTrack

* I know Yamaha keyboards were not made in the UK

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FourTrack

You've reported only one symptom -- the screen is strobing or blank. Are there other symptoms? Could you attempt to operate the machine even without a functional display?

In one possible scenario, it's only the display system that's defective. Any chance of ascertaining that?

BTW, here's that SED1330 in case anyone's curious.
https://www.lcd-module.de/eng/pdf/zubehoer/sed1330.pdf

-- Jeff

_________________
In 1988 my 65C02 got six new registers and 44 new full-speed instructions!
https://laughtonelectronics.com/Arcana/ ... mmary.html