SCHEMA interface memotech I/F centronic type parallel printer interface

Discussions about Sinclair ZX80 and ZX81 Hardware
Post Reply
didier
Posts: 10
Joined: Sat Jan 14, 2017 5:54 pm

SCHEMA interface memotech I/F centronic type parallel printer interface

Post by didier »

hello to everyone

I am looking for the COMPLETE SCHEMA (both sides) of the memotech interface, MEMOPAK I/F centronic type parralel PRINTER interface

Where can I find this?

thanks

best regard

didier (excuse for my english)
Mustermann
Posts: 45
Joined: Sun Dec 22, 2019 12:09 pm
Location: Augsburg, Germany

Re: SCHEMA interface memotech I/F centronic type parallel printer interface

Post by Mustermann »

Interesting Interface.

Schematic can be found in the German forum:
https://forum.tlienhard.com/phpBB3/viewtopic.php?t=4628

Content of EPROM and typ of PAL (PAL16L8-4CN) can be found here, as well as a picture of one (parts) side of the PCB:
https://www.sinclairzxworld.com/viewtop ... f=8&t=3831

To know what it is doing and how it is doing this, we need just:

- The content of the PROM
- The configuration of the PAL

If you have an interface at hand, it would be great if you post a photo of the other (back) side.

Greetings from Mustermann
Last edited by 1024MAK on Thu May 02, 2024 9:41 am, edited 1 time in total.
Reason: Add url tags so that links work correctly
ZX81 issue 1 near to original state
ZX81 issue 1 56k internal ram with battery backup, UDG, CHR$128 and WRX enabled
Minstrel 3 ZX81 clone 64k with battery backup, UDG, CHR$128 and WRX enabled
Moggy
Posts: 3411
Joined: Wed Jun 18, 2008 2:00 pm

Re: SCHEMA interface memotech I/F centronic type parallel printer interface

Post by Moggy »

This is an old topic, pictures can be found in this thread, zip file 5th post.

https://www.sinclairzxworld.com/viewtop ... dac358f8d7
User avatar
XavSnap
Posts: 2062
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.
Contact:

Re: SCHEMA interface memotech I/F centronic type parallel printer interface

Post by XavSnap »

Merci beaucoup pour vos réponses.

:mrgreen:
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
User avatar
XavSnap
Posts: 2062
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.
Contact:

Re: SCHEMA interface memotech I/F centronic type parallel printer interface

Post by XavSnap »

Hi,
I took the diagram from Peter Liebert-Adelt and reedited it here:
WiringDiagram_IF_MT07.pdf
(128.58 KiB) Downloaded 87 times

More infos and pictures from Moggy and forum users: http://zx81.ordi5.free.fr/memotech/MT07_IF/

Have Fun.

Note: Doppelte Nachricht im Forum https://forum.tlienhard.com/
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Post Reply