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Elektor EC-68 (also sometime EC-6809)

Wawavoun

Member
Joined
May 17, 2020
Messages
25
Location
Alsace Yo !
Good evening all,

In its No. 100 of October 1986 Elektor published schematics for a computer called EC-6809.

It fits on two europe boards :
- uc + ram
- video (6845) + floppy interface (WDC 1770).

I have the project to rebuild one so I am looking for:

- a correct photo of the copper side of the video / floppy card (this view was not given in the article) and possibly of the other three sides as well,

- the ESS540, ESS541 and ESS542 eprom images,
These images are listed on txt files located on the system floppy provided at that time.
ESS541 is Assist09 from Motorola (may be adapted ?) and ESS542 is a characters generator so only ESS540 is a real problem.

Informations about other 6809 sbc able to run Flex09 on floppy is interesting....
If to many information's are lacking about Elektor system then I will try to switch to another solution able to run Flex09.

Thank you all for your help.
Regards.
Philippe
 
Last edited:

Wawavoun

Member
Joined
May 17, 2020
Messages
25
Location
Alsace Yo !
Hello,

Some news from this project :

The two boards are manufactured and tested.
The CPU board is working with a modified Assist09 monitor.
The interface board video part is working with a modified character generator coming from the Junior Computer. The floppy interface part have not been tested yet.

I renew my call for any information about the ESS-540 and ESS-541 eprom (dump, listing, asm source..., whatever you have).
If anybody have this system or can help in this topic please take contact !

Regards.
Philippe
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20211004_203849 BR.jpg
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20211008_173811 BR.jpg
 

P9P2P8

New Member
Joined
Jun 7, 2022
Messages
8
Location
Netherlands
Hello Philippe...

May I ask where you get the PCB's for this project ? Did you create these yourself ?

Thanks in advance..
 
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