Diagram for making your own cartridges?

Discussion forums for users of the Cambridge Z88 Portable Computer
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cj7hawk
Posts: 7
Joined: Sat Oct 09, 2021 7:43 am

Diagram for making your own cartridges?

Post by cj7hawk »

Hi All,

Are there any preexisting circuit layouts for DIY ROMs. or otherwise a set of details for mechanical properties of the card to make your own?

Regards
David
McKlaud
Posts: 324
Joined: Tue Dec 19, 2017 10:02 pm
Location: St Albans, UK

Re: Diagram for making your own cartridges?

Post by McKlaud »

Hi, please see the attached.
Attachments
Z88 edge conn
Z88 edge conn
Patent no. WO8809573
Patent no. WO8809573
Claudius
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cj7hawk
Posts: 7
Joined: Sat Oct 09, 2021 7:43 am

Re: Diagram for making your own cartridges?

Post by cj7hawk »

Thank you ! :)
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XavSnap
Posts: 1375
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.

Re: Diagram for making your own cartridges?

Post by XavSnap »

connector.jpg

Kicad module & footprint:
Z88_Connector.zip
(73.4 KiB) Downloaded 19 times
Just import the lib & mod file from the zipped file.
built from the previous diagram...
You had to check holes places.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
User avatar
XavSnap
Posts: 1375
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.

Re: Diagram for making your own cartridges?

Post by XavSnap »

Hi,

My update from the scanned PCB...
Unfortunately, there's only the front side.
You had to meticulously check the real PCB, to update this project...

Note: The connector width had to be adjust to the real socket.
connector2.jpg
connector3.jpg
z88_romcard.JPG
diagram.jpg
Kicad poject (Mod & Lib updated):
Z88_Connector.zip
(325.14 KiB) Downloaded 12 times
Technicals informations from : https://worldofspectrum.org/z88forever/ ... rdware.htm
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
McKlaud
Posts: 324
Joined: Tue Dec 19, 2017 10:02 pm
Location: St Albans, UK

Re: Diagram for making your own cartridges?

Post by McKlaud »

Wow! This is impressive.

One comment, the cartridge seems to be too wide and it would not fit into the slot.

There are no contacts on the other side because sockets are single sided. See photos.
Attachments
IMG_4042.jpg
IMG_4041.jpg
Claudius
----------
User avatar
XavSnap
Posts: 1375
Joined: Sat May 10, 2008 4:23 pm
Location: 'Zx81 France' Fb group.

Re: Diagram for making your own cartridges?

Post by XavSnap »

Hi,

The new update release 1.1.
connector2.jpg
connector3.jpg
Z88_Connector.zip
(397.01 KiB) Downloaded 13 times
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
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