Issue 2.2:
Need help reverse engineering Timex Store Demonstrator ROM file
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Sockets are useless for the anything other than the ROM and only possible causes of problems.
the recom and the capacitor can be inserted on the Backside of the PCB.
the recom and the capacitor can be inserted on the Backside of the PCB.
In theory, there is no difference between theory and practice. But, in practice, there is.
Re: Need help reverse engineering Timex Store Demonstrator ROM file
XavSnap and the rest of you,
I hope that none of the components on the board hit the computer's case. How about the card edge connector's row spacing specification fixture?
Thank you very much in advance.
Regards,
DesSony
I hope that none of the components on the board hit the computer's case. How about the card edge connector's row spacing specification fixture?
Thank you very much in advance.
Regards,
DesSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi,
The new connector 5.08 is ready !
The new connector 5.08 is ready !
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
All of you,
I placed a PCB fab order today. (11/1/'22)
Cheers,
DesSony
I placed a PCB fab order today. (11/1/'22)
Cheers,
DesSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Thanks DesSony.
>> 11/23/22 !
>> 11/23/22 !
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
XavSnap and the rest of you,
I received a T S Demo board yesterday (11/7/'22) from a carrier.
Direct connection. All components miss the computer's case. Go!
Edge card connector hole size. Go!
Edge card connector row spacing. Go!
I can use a triangle piece as a key tab for the edge card connector. I fixed the particular piece to fit within the connector. Go!
I read voltages off the board test points without chips in their places. 5+V and GND Go!
I need some time to test the board. I only saw a white screen at this time.
Best regards,
DeSony
I received a T S Demo board yesterday (11/7/'22) from a carrier.
Direct connection. All components miss the computer's case. Go!
Edge card connector hole size. Go!
Edge card connector row spacing. Go!
I can use a triangle piece as a key tab for the edge card connector. I fixed the particular piece to fit within the connector. Go!
I read voltages off the board test points without chips in their places. 5+V and GND Go!
I need some time to test the board. I only saw a white screen at this time.
Best regards,
DeSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi DesSony,
The /ROMCS seem to be active at the ROM startup.
Check the 78LS04 component/socket.
The /ROMCS seem to be active at the ROM startup.
Check the 78LS04 component/socket.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)